{"id":104,"date":"2024-05-30T18:42:31","date_gmt":"2024-05-30T10:42:31","guid":{"rendered":"http:\/\/zhaoyanqi.cn\/?p=104"},"modified":"2024-05-30T18:42:32","modified_gmt":"2024-05-30T10:42:32","slug":"%e8%bf%9b%e7%a8%8b%e7%ae%a1%e7%90%86%e4%b8%8b","status":"publish","type":"post","link":"https:\/\/zhaoyanqi.cn\/?p=104","title":{"rendered":"\u8fdb\u7a0b\u7ba1\u7406\u4e0b"},"content":{"rendered":"\n<p>\u8be6\u89c1egon\u535a\u5ba2\uff1a<a href=\"https:\/\/egonlin.com\/?p=210\" target=\"_blank\" rel=\"noreferrer noopener\">https:\/\/egonlin.com\/?p=210<\/a><\/p>\n\n\n\n<h1 class=\"wp-block-heading\" id=\"FISE4\">\u7279\u6b8a\u8fdb\u7a0b<\/h1>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"XW1xP\">\u50f5\u5c38\u8fdb\u7a0b<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u50f5\u5c38\u8fdb\u7a0b\u662f\u64cd\u4f5c\u7cfb\u7edf\u7684\u4e00\u79cd\u4f18\u5316\u673a\u5236\u3002<\/li>\n\n\n\n<li>\u4e00\u4e2a\u8fdb\u7a0b\u6b7b\u6389\u4e4b\u540e\uff0c\u4f1a\u628a\u5176\u5360\u7528\u7684cpu\u3001\u5185\u5b58\u8d44\u6e90\u90fd\u91ca\u653e\u6389\uff0c\u4f46\u662f\u4f1a\u4fdd\u7559\u8be5\u8fdb\u7a0b\u7684\u72b6\u6001\u4fe1\u606f\uff0c\u4f8b\u5982\uff1apid\u53f7\u3001\u5b58\u5728\u8fc7\u7684\u4e00\u4e9b\u8fd0\u884c\u4fe1\u606f\u3002<\/li>\n\n\n\n<li>\u8fd9\u4e9b\u4fdd\u7559\u4e0b\u6765\u7684\u4fe1\u606f\u90fd\u662f\u64cd\u4f5c\u7cfb\u7edf\u7ed9\u7236\u8fdb\u7a0b\u51c6\u5907\u7684\u3002<\/li>\n\n\n\n<li>\u6bcf\u4e2a\u8fdb\u7a0b\u6b7b\u6389\u4e4b\u524d\u90fd\u4f1a\u8fdb\u5165\u50f5\u5c38\u8fdb\u7a0b\u7684\u72b6\u6001<\/li>\n\n\n\n<li>\u50f5\u5c38\u8fdb\u7a0b\u901a\u5e38\u7531\u7236\u8fdb\u7a0b\u6765\u56de\u6536<\/li>\n\n\n\n<li>kill -CHLD \u7236\u8fdb\u7a0bPID<\/li>\n<\/ul>\n\n\n\n<p id=\"u035d0e38\">#1\u3001\u4ec0\u4e48\u662f\u50f5\u5c38\u8fdb\u7a0b<\/p>\n\n\n\n<p id=\"u7ab6300f\">\u64cd\u4f5c\u7cfb\u7edf\u8d1f\u8d23\u7ba1\u7406\u8fdb\u7a0b<\/p>\n\n\n\n<p id=\"u40f77d4b\">\u6211\u4eec\u7684\u5e94\u7528\u7a0b\u5e8f\u82e5\u60f3\u5f00\u542f\u5b50\u8fdb\u7a0b\uff0c\u90fd\u662f\u5728\u5411\u64cd\u4f5c\u7cfb\u7edf\u53d1\u9001\u7cfb\u7edf\u8c03\u7528<\/p>\n\n\n\n<p id=\"u5ac4995a\">\u5f53\u4e00\u4e2a\u5b50\u8fdb\u7a0b\u5f00\u542f\u8d77\u6765\u4ee5\u540e\uff0c\u5b83\u7684\u8fd0\u884c\u4e0e\u7236\u8fdb\u7a0b\u662f\u5f02\u6b65\u7684\uff0c\u5f7c\u6b64\u4e92\u4e0d\u5f71\u54cd\uff0c\u8c01\u5148\u6b7b\u90fd\u4e0d\u4e00\u5b9a<\/p>\n\n\n\n<p id=\"u98e8f80e\">linux\u64cd\u4f5c\u7cfb\u7edf\u7684\u8bbe\u8ba1\u89c4\u5b9a\uff1a\u7236\u8fdb\u7a0b\u5e94\u8be5\u5177\u5907\u968f\u65f6\u83b7\u53d6\u5b50\u8fdb\u7a0b\u72b6\u6001\u7684\u80fd\u529b<\/p>\n\n\n\n<p id=\"ue93d3982\">\u5982\u679c\u5b50\u8fdb\u7a0b\u5148\u4e8e\u7236\u8fdb\u7a0b\u8fd0\u884c\u5b8c\u6bd5\uff0c\u6b64\u65f6\u82e5linux\u64cd\u4f5c\u7cfb\u7edf\u7acb\u523b\u628a\u8be5\u5b50\u8fdb\u7a0b\u7684\u6240\u6709\u8d44\u6e90\u5168\u90e8\u91ca\u653e\u6389\uff0c\u90a3\u4e48\u7236\u8fdb\u7a0b\u6765\u67e5\u770b\u5b50\u8fdb\u7a0b\u72b6\u6001\u65f6\uff0c\u4f1a\u7a81\u7136\u53d1\u73b0\u81ea\u5df1\u521a\u521a\u751f\u4e86\u4e00\u4e2a\u513f\u5b50\uff0c\u4f46\u662f\u513f\u5b50\u6ca1\u4e86\uff01\uff01\uff01<\/p>\n\n\n\n<p id=\"u01dec838\">\u8fd9\u5c31\u8fdd\u80cc\u4e86linux\u64cd\u4f5c\u7cfb\u7edf\u7684\u8bbe\u8ba1\u89c4\u5b9a<\/p>\n\n\n\n<p id=\"u55d8c211\">\u6240\u4ee5\uff0clinux\u7cfb\u7edf\u51fa\u4e8e\u597d\u5fc3\uff0c\u82e5\u5b50\u8fdb\u7a0b\u5148\u4e8e\u7236\u8fdb\u7a0b\u8fd0\u884c\u5b8c\u6bd5\/\u6b7b\u6389\uff0c\u90a3\u4e48linux\u7cfb\u7edf\u5728\u6e05\u7406\u5b50\u8fdb\u7a0b\u7684\u65f6\u5019\uff0c\u4f1a\u5c06\u5b50\u8fdb\u7a0b\u5360\u7528\u7684\u91cd\u578b\u8d44\u6e90\u90fd\u91ca\u653e\u6389(\u6bd4\u5982\u5360\u7528\u7684\u5185\u5b58\u7a7a\u95f4\u3001cpu\u8d44\u6e90\u3001\u6253\u5f00\u7684\u6587\u4ef6\u7b49)\uff0c\u4f46\u662f\u4f1a\u4fdd\u7559\u4e00\u90e8\u5206\u5b50\u8fdb\u7a0b\u7684\u5173\u952e\u72b6\u6001\u4fe1\u606f\uff0c\u6bd4\u5982\u8fdb\u7a0b\u53f7the process ID\uff0c\u9000\u51fa\u72b6\u6001the termination status of the process\uff0c\u8fd0\u884c\u65f6\u95f4the amount of CPU time taken by the process\u7b49\uff0c\u6b64\u65f6\u5b50\u8fdb\u7a0b\u5c31\u76f8\u5f53\u4e8e\u6b7b\u4e86\u4f46\u662f\u6ca1\u6b7b\u5e72\u51c0\uff0c\u56e0\u800c\u5f97\u540d&#8221;\u50f5\u5c38\u8fdb\u7a0b&#8221;\uff0c\u5176\u5b9e\u50f5\u5c38\u8fdb\u7a0b\u662flinux\u64cd\u4f5c\u7cfb\u7edf\u51fa\u4e8e\u597d\u5fc3\uff0c\u4e3a\u7236\u8fdb\u7a0b\u51c6\u5907\u7684\u4e00\u4e9b\u5b50\u8fdb\u7a0b\u7684\u72b6\u6001\u6570\u636e\uff0c\u4e13\u95e8\u4f9b\u7236\u8fdb\u7a0b\u67e5\u9605\uff0c\u4e5f\u5c31\u662f\u8bf4&#8221;\u50f5\u5c38\u8fdb\u7a0b&#8221;\u662flinux\u7cfb\u7edf\u7684\u4e00\u79cd\u6570\u636e\u7ed3\u6784\uff0c\u6240\u6709\u7684\u5b50\u8fdb\u7a0b\u7ed3\u675f\u540e\u90fd\u4f1a\u8fdb\u5165\u50f5\u5c38\u8fdb\u7a0b\u7684\u72b6\u6001<\/p>\n\n\n\n<p id=\"u07ca8fc9\"># 2\u3001\u90a3\u4e48\u95ee\u9898\u6765\u4e86\uff0c\u50f5\u5c38\u8fdb\u7a0b\u6b8b\u5b58\u7684\u90a3\u4e9b\u6570\u636e\u4e0d\u9700\u8981\u56de\u6536\u5417\uff1f\uff1f\uff1f<\/p>\n\n\n\n<p id=\"u08caef68\">\u5f53\u7136\u9700\u8981\u56de\u6536\u4e86\uff0c\u4f46\u662f\u50f5\u5c38\u8fdb\u7a0b\u6bd5\u7adf\u662flinux\u7cfb\u7edf\u51fa\u4e8e\u597d\u5fc3\uff0c\u4e3a\u7236\u8fdb\u7a0b\u51c6\u5907\u7684\u6570\u636e\uff0c\u81f3\u4e8e\u56de\u6536\u64cd\u4f5c\uff0c\u5e94\u8be5\u662f\u7236\u8fdb\u7a0b\u89c9\u5f97\u81ea\u5df1\u65e0\u9700\u67e5\u770b\u50f5\u5c38\u8fdb\u7a0b\u7684\u6570\u636e\u4e86\uff0c\u7236\u8fdb\u7a0b\u89c9\u5f97\u7559\u7740\u50f5\u5c38\u8fdb\u7a0b\u7684\u6570\u636e\u4e5f\u6ca1\u5565\u7528\u4e86\uff0c\u7136\u540e\u7531\u7236\u8fdb\u7a0b\u53d1\u8d77\u4e00\u4e2a\u7cfb\u7edf\u8c03\u7528wait \/ waitpid\u6765\u901a\u77e5linux\u64cd\u4f5c\u7cfb\u7edf\u8bf4\uff1a\u54e5\u4eec\uff0c\u8c22\u8c22\u4f60\u4e3a\u6211\u4fdd\u5b58\u7740\u8fd9\u4e9b\u50f5\u5c38\u7684\u5b50\u8fdb\u7a0b\u72b6\u6001\uff0c\u6211\u73b0\u5728\u7528\u4e0d\u4e0a\u4ed6\u4e86\uff0c\u4f60\u53ef\u4ee5\u628a\u4ed6\u4eec\u56de\u6536\u6389\u4e86\u3002\u7136\u540e\u64cd\u4f5c\u7cfb\u7edf\u518d\u6e05\u7406\u6389\u50f5\u5c38\u8fdb\u7a0b\u7684\u6b8b\u4f59\u72b6\u6001\uff0c\u4f60\u770b\uff0c\u4e24\u8005\u914d\u5408\u7684\u975e\u5e38\u9ed8\u5951\uff0c\u4f46\u662f\uff0c\u6015\u5c31\u6015\u5728\u3002\u3002\u3002<\/p>\n\n\n\n<p id=\"uef204535\"># 3\u3001\u5206\u4e09\u79cd\u60c5\u51b5\u8ba8\u8bba<\/p>\n\n\n\n<p id=\"u6ae3b56b\">1\u3001linux\u7cfb\u7edf\u81ea\u5e26\u7684\u4e00\u4e9b\u4f18\u79c0\u7684\u5f00\u6e90\u8f6f\u4ef6\uff0c\u8fd9\u4e9b\u8f6f\u4ef6\u5728\u5f00\u542f\u5b50\u8fdb\u7a0b\u65f6\uff0c\u7236\u8fdb\u7a0b\u5185\u90e8\u90fd\u4f1a\u53ca\u65f6\u8c03\u7528wait\/waitpid\u6765\u901a\u77e5\u64cd\u4f5c\u7cfb\u7edf\u56de\u6536\u50f5\u5c38\u8fdb\u7a0b\uff0c\u6240\u4ee5\uff0c\u6211\u4eec\u901a\u5e38\u770b\u4e0d\u5230\u4f18\u79c0\u7684\u5f00\u6e90\u8f6f\u4ef6\u5806\u79ef\u50f5\u5c38\u8fdb\u7a0b\uff0c\u56e0\u4e3a\u5f88\u53ca\u65f6\u5c31\u56de\u6536\u4e86\uff0c\u4e0elinux\u7cfb\u7edf\u914d\u5408\u7684\u5f88\u9ed8\u5951<\/p>\n\n\n\n<p id=\"ub1f073d8\">2\u3001\u4e00\u4e9b\u6c34\u5e73\u826f\u597d\u7684\u7a0b\u5e8f\u5458\u5f00\u53d1\u7684\u5e94\u7528\u7a0b\u5e8f\uff0c\u8fd9\u4e9b\u7a0b\u5e8f\u5458\u6280\u672f\u529f\u5e95\u6df1\u539a\uff0c\u77e5\u9053\u7236\u8fdb\u7a0b\u8981\u5bf9\u5b50\u8fdb\u7a0b\u8d1f\u8d23\uff0c\u4f1a\u5728\u7236\u8fdb\u7a0b\u5185\u8003\u8651\u8c03\u7528wait\/waitpid\u6765\u901a\u77e5\u64cd\u4f5c\u7cfb\u7edf\u56de\u6536\u50f5\u5c38\u8fdb\u7a0b\uff0c\u4f46\u662f\u53d1\u8d77\u7cfb\u7edf\u8c03\u7528wait\/waitpid\u7684\u65f6\u95f4\u53ef\u80fd\u6162\u4e86\u4e9b\uff0c\u4e8e\u662f\u6211\u4eec\u53ef\u4ee5\u5728linux\u7cfb\u7edf\u4e2d\u901a\u8fc7\u547d\u4ee4\u67e5\u770b\u5230\u50f5\u5c38\u8fdb\u7a0b\u72b6\u6001<\/p>\n\n\n\n<p id=\"u0b555849\">[root@egon ~]# ps aux | grep [Z]+<\/p>\n\n\n\n<p id=\"u9fd0e318\">3\u3001\u4e00\u4e9b\u5783\u573e\u7a0b\u5e8f\u5458\uff0c\u6280\u672f\u975e\u5e38\u5783\u573e\uff0c\u53ea\u77e5\u9053\u5f00\u5b50\u8fdb\u7a0b\uff0c\u7236\u8fdb\u7a0b\u4e5f\u4e0d\u7ed3\u675f\uff0c\u5c31\u5728\u90a3\u50bb\u4e0d\u62c9\u51e0\u5730\u4e00\u76f4\u5f00\u5b50\u8fdb\u7a0b\uff0c\u4e5f\u538b\u6839\u4e0d\u77e5\u9053\u5565\u53eb\u50f5\u5c38\u8fdb\u7a0b\uff0c\u81f3\u4e8ewait\/waitpid\u7684\u7cfb\u7edf\u8c03\u7528\u66f4\u662f\u6ca1\u542c\u8bf4\u8fc7\uff0c\u8fd9\u4e2a\u65f6\u5019\uff0c\u5c31\u771f\u7684\u5783\u573e\u4e86\uff0c\u64cd\u4f5c\u7cfb\u7edf\u4e2d\u4f1a\u5806\u79ef\u5f88\u591a\u50f5\u5c38\u8fdb\u7a0b\uff0c\u6b64\u65f6\u6211\u4eec\u7684\u8ba1\u7b97\u673a\u4f1a\u8fdb\u5165\u4e00\u4e2a\u5947\u602a\u7684\u73b0\u8c61\uff0c\u5c31\u662f\u5185\u5b58\u5145\u8db3\u3001\u786c\u76d8\u5145\u8db3\u3001cpu\u7a7a\u95f2\uff0c\u4f46\u662f\uff0c\u542f\u52a8\u65b0\u7684\u8f6f\u4ef6\u5c31\u662f\u65e0\u6cd5\u542f\u52a8\u8d77\u6765\uff0c\u4e3a\u5565\uff0c\u56e0\u4e3a\u64cd\u4f5c\u7cfb\u7edf\u8d1f\u8d23\u7ba1\u7406\u8fdb\u7a0b\uff0c\u6bcf\u542f\u52a8\u4e00\u4e2a\u8fdb\u7a0b\u5c31\u4f1a\u5206\u914d\u4e00\u4e2apid\u53f7\uff0c\u800cpid\u53f7\u662f\u6709\u9650\u7684\uff0c\u6b63\u5e38\u60c5\u51b5\u4e0bpid\u4e5f\u7528\u4e0d\u5b8c\uff0c\u4f46\u6015\u5c31\u6015\u5806\u79ef\u4e00\u5806\u50f5\u5c38\u8fdb\u7a0b\uff0c\u4ed6\u5403\u4e0d\u4e86\u591a\u5c11\u5185\u5b58\uff0c\u4f46\u80fd\u5403\u4e00\u5806pid<\/p>\n\n\n\n<p id=\"u9c6650a9\"># 4\u3001\u5982\u679c\u6e05\u7406\u50f5\u5c38\u8fdb\u7a0b<\/p>\n\n\n\n<p id=\"u92f0701f\">\u9488\u5bf9\u60c5\u51b53\uff0c\u53ea\u6709\u4e00\u79cd\u89e3\u51b3\u65b9\u6848\uff0c\u5c31\u662f\u6740\u6b7b\u7236\u8fdb\u7a0b\uff0c\u90a3\u4e48\u50f5\u5c38\u7684\u5b50\u8fdb\u7a0b\u4f1a\u88ablinux\u7cfb\u7edf\u4e2dpid\u4e3a1\u7684\u9876\u7ea7\u8fdb\u7a0b\uff08init\u6216systemd\uff09\u63a5\u7ba1\uff0c\u9876\u7ea7\u8fdb\u7a0b\u4f1a\u5b9a\u671f\u53d1\u8d77\u7cfb\u7edf\u8c03\u7528wait\/waitpid\u6765\u901a\u77e5\u64cd\u4f5c\u7cfb\u7edf\u6e05\u7406\u50f5\u5c38<\/p>\n\n\n\n<p id=\"u8ac94af2\">\u9488\u5bf9\u60c5\u51b52\uff0c\u53ef\u4ee5\u53d1\u9001\u4fe1\u53f7\u7ed9\u7236\u8fdb\u7a0b\uff0c\u901a\u77e5\u5b83\u5feb\u70b9\u53d1\u8d77\u7cfb\u7edf\u8c03\u7528wait\/waitpid\u6765\u6e05\u7406\u50f5\u5c38\u7684\u513f\u5b50<\/p>\n\n\n\n<p id=\"ueaaf2c2b\">kill -CHLD \u7236\u8fdb\u7a0bPID<\/p>\n\n\n\n<p id=\"uc8e564c4\"># 5\u3001\u7ed3\u8bed<\/p>\n\n\n\n<p id=\"uea6f88b2\">\u50f5\u5c38\u8fdb\u7a0b\u662flinux\u7cfb\u7edf\u51fa\u4e8e\u597d\u5fc3\u8bbe\u8ba1\u7684\u4e00\u79cd\u6570\u636e\u7ed3\u6784\uff0c\u4e00\u4e2a\u5b50\u8fdb\u7a0b\u6b7b\u6389\u540e\uff0c\u76f8\u5f53\u4e8e\u64cd\u4f5c\u7cfb\u7edf\u51fa\u4e8e\u597d\u5fc3\u5e2e\u5b83\u7684\u7238\u7238\u4fdd\u5b58\u5b83\u7684\u9057\u4f53\uff0c\u4e4b\u8bf4\u4ee5\u4f1a\u5728\u67d0\u79cd\u573a\u666f\u4e0b\u6709\u5bb3\uff0c\u662f\u56e0\u4e3a\u5b83\u7684\u7238\u7238\u4e0d\u9760\u8c31\uff0c\u513f\u5b50\u6b7b\u4e86\uff0c\u4e5f\u4e0d\u53ca\u65f6\u6536\u5c38(\u53d1\u8d77\u7cfb\u7edf\u8c03\u7528\u8ba9\u64cd\u4f5c\u7cfb\u7edf\u6536\u5c38)<\/p>\n\n\n\n<p id=\"u543867c4\">\u8bf4\u767d\u4e86\uff0c\u50f5\u5c38\u8fdb\u7a0b\u672c\u8eab\u65e0\u5bb3\uff0c\u6709\u5bb3\u7684\u662f\u90a3\u4e9b\u6c34\u5e73\u4e0d\u8db3\u7684\u7a0b\u5e8f\u5458\uff0c\u4ed6\u4eec\u603b\u662f\u559c\u6b22\u5199bug\uff0c\u597d\u5427\uff0c\u5982\u679c\u4f60\u60f3\u770b\u770b\u5783\u573e\u7a0b\u5e8f\u5458\u662f\u5982\u4f55\u5199bug\u6765\u5806\u79ef\u50f5\u5c38\u8fdb\u7a0b\u7684\uff0c\u4f60\u53ef\u4ee5\u770b\u4e00\u4e0b\u8fd9\u7bc7\u535a\u5ba2<a href=\"https:\/\/www.cnblogs.com\/linhaifeng\/articles\/13567273.html\" target=\"_blank\" rel=\"noreferrer noopener\">https:\/\/www.cnblogs.com\/linhaifeng\/articles\/13567273.html<\/a><\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"KQsDz\">\u5b64\u513f\u8fdb\u7a0b<\/h2>\n\n\n\n<pre id=\"M3Glx\" class=\"wp-block-code\"><code>\u7236\u8fdb\u7a0b\u5148\u6b7b\u6389\uff0c\u800c\u5b83\u7684\u4e00\u4e2a\u6216\u591a\u4e2a\u5b50\u8fdb\u7a0b\u8fd8\u5728\u8fd0\u884c\uff0c\u90a3\u4e48\u90a3\u4e9b\u5b50\u8fdb\u7a0b\u5c06\u6210\u4e3a\u5b64\u513f\u8fdb\u7a0b\u3002\u5b64\u513f\u8fdb\u7a0b\u5c06\u88ab\u8fdb\u7a0b\u53f7\u4e3a1\u7684\u9876\u7ea7\u8fdb\u7a0b\uff08init\u6216systemd\uff09\u6240\u6536\u517b\uff0c\u5e76\u7531\u9876\u7ea7\u8fdb\u7a0b\u5bf9\u5b83\u4eec\u5b8c\u6210\u72b6\u6001\u6536\u96c6\u5de5\u4f5c\u3002\n\u8fdb\u7a0b\u5c31\u597d\u50cf\u662f\u4e00\u4e2a\u6c11\u653f\u5c40\uff0c\u4e13\u95e8\u8d1f\u8d23\u5904\u7406\u5b64\u513f\u8fdb\u7a0b\u7684\u5584\u540e\u5de5\u4f5c\u3002\u6bcf\u5f53\u51fa\u73b0\u4e00\u4e2a\u5b64\u513f\u8fdb\u7a0b\u7684\u65f6\u5019\uff0c\u5185\u6838\u5c31\u628a\u5b64\u513f\u8fdb\u7a0b\u7684\u7236\u8fdb\u7a0b\u8bbe\u7f6e\u4e3a\u9876\u7ea7\u8fdb\u7a0b\uff0c\u800c\u9876\u7ea7\u8fdb\u7a0b\u4f1a\u5faa\u73af\u5730wait()\u5b83\u7684\u5df2\u7ecf\u9000\u51fa\u7684\u5b50\u8fdb\u7a0b\u3002\u8fd9\u6837\uff0c\u5f53\u4e00\u4e2a\u5b64\u513f\u8fdb\u7a0b\u51c4\u51c9\u5730\u7ed3\u675f\u4e86\u5176\u751f\u547d\u5468\u671f\u7684\u65f6\u5019\uff0c\u9876\u7ea7\u8fdb\u7a0b\u5c31\u4f1a\u4ee3\u8868\u515a\u548c\u653f\u5e9c\u51fa\u9762\u5904\u7406\u5b83\u7684\u4e00\u5207\u5584\u540e\u5de5\u4f5c\u3002\u56e0\u6b64\u5b64\u513f\u8fdb\u7a0b\u5e76\u4e0d\u4f1a\u6709\u4ec0\u4e48\u5371\u5bb3\u3002\n \n\u6211\u4eec\u6765\u6d4b\u8bd5\u4e00\u4e0b\uff08\u521b\u5efa\u5b8c\u5b50\u8fdb\u7a0b\u540e\uff0c\u4e3b\u8fdb\u7a0b\u6240\u5728\u7684\u8fd9\u4e2a\u811a\u672c\u5c31\u9000\u51fa\u4e86\uff0c\u5f53\u7236\u8fdb\u7a0b\u5148\u4e8e\u5b50\u8fdb\u7a0b\u7ed3\u675f\u65f6\uff0c\u5b50\u8fdb\u7a0b\u4f1a\u88ab\u9876\u7ea7\u8fdb\u7a0b\u6536\u517b\uff0c\u6210\u4e3a\u5b64\u513f\u8fdb\u7a0b\uff0c\u800c\u975e\u50f5\u5c38\u8fdb\u7a0b\uff09\uff0c\u6587\u4ef6\u5185\u5bb9\n \nimport os\nimport sys\nimport time\n \npid = os.getpid()\nppid = os.getppid()\nprint 'im father', 'pid', pid, 'ppid', ppid\npid = os.fork()\n#\u6267\u884cpid=os.fork()\u5219\u4f1a\u751f\u6210\u4e00\u4e2a\u5b50\u8fdb\u7a0b\n#\u8fd4\u56de\u503cpid\u6709\u4e24\u79cd\u503c\uff1a\n#    \u5982\u679c\u8fd4\u56de\u7684pid\u503c\u4e3a0\uff0c\u8868\u793a\u5728\u5b50\u8fdb\u7a0b\u5f53\u4e2d\n#    \u5982\u679c\u8fd4\u56de\u7684pid\u503c&gt;0\uff0c\u8868\u793a\u5728\u7236\u8fdb\u7a0b\u5f53\u4e2d\nif pid &gt; 0:\n    print 'father died..'\n    sys.exit(0)\n \n# \u4fdd\u8bc1\u4e3b\u7ebf\u7a0b\u9000\u51fa\u5b8c\u6bd5\ntime.sleep(1)\nprint 'im child', os.getpid(), os.getppid()\n \n\u6267\u884c\u6587\u4ef6\uff0c\u8f93\u51fa\u7ed3\u679c\uff1a\nim father pid 32515 ppid 32015\nfather died..\nim child 32516 1\n \n\u770b\uff0c\u5b50\u8fdb\u7a0b\u5df2\u7ecf\u88abpid\u4e3a1\u7684\u9876\u7ea7\u8fdb\u7a0b\u63a5\u6536\u4e86\uff0c\u6240\u4ee5\u50f5\u5c38\u8fdb\u7a0b\u5728\u8fd9\u79cd\u60c5\u51b5\u4e0b\u662f\u4e0d\u5b58\u5728\u7684\uff0c\u5b58\u5728\u53ea\u6709\u5b64\u513f\u8fdb\u7a0b\u800c\u5df2\uff0c\u5b64\u513f\u8fdb\u7a0b\u58f0\u660e\u5468\u671f\u7ed3\u675f\u81ea\u7136\u4f1a\u88ab\u9876\u7ea7\u8fdb\u7a0b\u6765\u9500\u6bc1\u3002<\/code><\/pre>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"GJmOp\">\u5b88\u62a4\u8fdb\u7a0b<\/h2>\n\n\n\n<p id=\"u26db3b4e\">\u5b88\u62a4\u8fdb\u7a0b\uff08Daemon process\uff09\u662f\u5728Unix\u548c\u7c7bUnix\uff08\u5982Linux\uff09\u64cd\u4f5c\u7cfb\u7edf\u4e2d\uff0c\u4e00\u79cd\u5728\u540e\u53f0\u8fd0\u884c\u7684\u7279\u6b8a\u8fdb\u7a0b\u3002\u8fd9\u7c7b\u8fdb\u7a0b\u901a\u5e38\u5e76\u4e0d\u901a\u8fc7\u4ea4\u4e92\u5f0f\u7ec8\u7aef\u63a7\u5236\uff0c\u800c\u662f\u5728\u7cfb\u7edf\u542f\u52a8\u540e\u81ea\u52a8\u8fd0\u884c\uff0c\u8fdb\u884c\u4e00\u4e9b\u7cfb\u7edf\u7ba1\u7406\u4efb\u52a1\u3002\u81f3\u4e8e&#8221;\u5b88\u62a4&#8221;\u8fd9\u4e24\u4e2a\u5b57\uff0c\u5b83\u53d6\u81ea\u82f1\u6587&#8221;daemon\u201d\uff0c\u5728\u8ba1\u7b97\u673a\u79d1\u5b66\u4e2d\uff0c\u201cdaemon&#8221;\u662f\u5e0c\u814a\u795e\u8bdd\u4e2d\u7684\u795e\u7075\u548c\u9b3c\u795e\u7684\u610f\u601d\uff0c\u6307\u7684\u662f\u90a3\u4e9b\u5728\u540e\u53f0\u9ed8\u9ed8\u5de5\u4f5c\u7684\u670d\u52a1\u8fdb\u7a0b\u3002<\/p>\n\n\n\n<p id=\"u41a80296\">\u4ee5\u4e0b\u51e0\u70b9\u662f\u5b88\u62a4\u8fdb\u7a0b\u7684\u4e00\u4e9b\u4e3b\u8981\u7279\u5f81\uff1a<\/p>\n\n\n\n<p id=\"u0c7c8016\">1\u3001\u5b88\u62a4\u8fdb\u7a0b\u5728\u540e\u53f0\u8fd0\u884c\uff0c\u901a\u5e38\u4e0d\u9700\u8981\u4e0e\u7528\u6237\u4ea4\u4e92\u3002<\/p>\n\n\n\n<p id=\"ub93ce5d5\">2\u3001\u5b88\u62a4\u8fdb\u7a0b\u901a\u5e38\u957f\u65f6\u95f4\u8fd0\u884c\uff0c\u76f4\u5230\u7cfb\u7edf\u5173\u95ed\u3002<\/p>\n\n\n\n<p id=\"u35e2fbc0\">3\u3001\u5b88\u62a4\u8fdb\u7a0b\u6ca1\u6709\u63a7\u5236\u7ec8\u7aef\uff0c\u4e5f\u4e0d\u62e5\u6709\u6807\u51c6\u8f93\u5165\u8bbe\u5907\uff0c\u6807\u51c6\u8f93\u51fa\u8bbe\u5907\u6216\u6807\u51c6\u9519\u8bef\u8bbe\u5907\u3002<\/p>\n\n\n\n<p id=\"u6c755f2f\">\u5b88\u62a4\u8fdb\u7a0b\u4e0e\u666e\u901a\u8fdb\u7a0b\u7684\u533a\u522b\u4e3b\u8981\u4f53\u73b0\u5728\uff1a<\/p>\n\n\n\n<p id=\"u5f68597f\">1\u3001\u751f\u547d\u5468\u671f\uff1a\u666e\u901a\u8fdb\u7a0b\u901a\u5e38\u7531\u7528\u6237\u542f\u52a8\uff0c\u4efb\u52a1\u5b8c\u6210\u540e\u7ed3\u675f\uff1b\u800c\u5b88\u62a4\u8fdb\u7a0b\u5728\u7cfb\u7edf\u542f\u52a8\u540e\u81ea\u52a8\u8fd0\u884c\uff0c\u76f4\u5230\u7cfb\u7edf\u5173\u95ed\u3002<\/p>\n\n\n\n<p id=\"u670940c6\">2\u3001\u63a7\u5236\uff1a\u666e\u901a\u8fdb\u7a0b\u901a\u5e38\u6709\u63a7\u5236\u7ec8\u7aef\uff0c\u53ef\u4ee5\u76f4\u63a5\u4e0e\u7528\u6237\u4ea4\u4e92\uff1b\u800c\u5b88\u62a4\u8fdb\u7a0b\u6ca1\u6709\u63a7\u5236\u7ec8\u7aef\uff0c\u901a\u5e38\u901a\u8fc7\u7cfb\u7edf\u65e5\u5fd7\u3001\u914d\u7f6e\u6587\u4ef6\u7b49\u65b9\u5f0f\u8fdb\u884c\u7ba1\u7406\u548c\u914d\u7f6e\u3002<\/p>\n\n\n\n<h1 class=\"wp-block-heading\" id=\"RCL9h\">\u7ba1\u7406\u8fdb\u7a0b<\/h1>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"DM9Mx\">\u4f18\u5148\u7ea7\u8bbe\u7f6e\uff08nice\u503c\uff09<\/h2>\n\n\n\n<pre id=\"faqDf\" class=\"wp-block-code\"><code># 0\u3001\u50a8\u5907\u77e5\u8bc6\n\u4e00\u4e2a\u8fdb\u7a0b\u5728\u8fd0\u884c\u7684\u65f6\u5019\u4f1a\u6d89\u53ca\u5230\u5185\u6838\u6001\u4e0e\u7528\u6237\u6001\u7684\u8f6c\u6362\n\u5173\u4e8e\u8fdb\u7a0b\u7684\u4f18\u5148\u7ea7\uff0ctop\u547d\u4ee4\u67e5\u770b\u5230\u4e24\u4e2a\u76f8\u5173\u7684\u503cPR\u4e0eNI\nPR-\u300b\u5185\u6838\u6001\u4f7f\u7528\u7684\u503c\nNI-\u300b\u7528\u6237\u6001\u4f7f\u7528\u7684\u503c\n\n\u7cfb\u7edf\u8c03\u5ea6\u5668\u6700\u7ec8\u662f\u6839\u636ePR\u7684\u503c\u6765\u51b3\u5b9a\u8fdb\u7a0b\u7684\u8fd0\u884c\u987a\u5e8f\nPR\u503c\u8d8a\u5c0f\u4f18\u5148\u7ea7\u8d8a\u9ad8\nPR\u503c=20+NICE\u503c # NICE\u503c\u7684\u8303\u56f4\u4e3a-20\u5230+19\n\n\u7528\u6237\u65e0\u6cd5\u4fee\u6539\u5185\u6838\u6001\u7684PR\u503c\uff0c\u4f46\u662f\n\u6211\u4eec\u53ef\u7528nice\u547d\u4ee4\u4fee\u6539\u7528\u6237\u6001\u5f97NI\u503c\uff0c\u6765\u5f71\u54cd\u5185\u6838\u6001\u7684PR\u503c\n\n# 1\u3001\u547d\u4ee4\nnice &#91;-n &lt;\u4f18\u5148\u7ea7&gt;] &#91;--help] &#91;--version] &#91;\u6267\u884c\u6307\u4ee4]\n\n# 2\u3001\u9009\u9879\u4ecb\u7ecd:\n\u82e5 nice\u547d\u4ee4\u672a\u6307\u5b9a\u4f18\u5148\u7ea7\u7684\u8c03\u6574\u503c\uff0c\u5219\u4ee5\u7f3a\u7701\u503c10\u6765\u8c03\u6574\u7a0b\u5e8f\u8fd0\u884c\u4f18\u5148\u7ea7\uff0c\u65e2\u5728\u5f53\u524d\u7a0b\u5e8f\u8fd0\u884c\u4f18\u5148\u7ea7\u57fa\u7840\u4e4b\u4e0a\u589e\u52a010\u3002 \n-n &lt;\u4f18\u5148\u7ea7&gt;    \u6307\u5b9a\u4f18\u5148\u7ea7\uff1b\n--help        \u5e2e\u52a9\u4fe1\u606f\uff1b\n--version      \u7248\u672c\u4fe1\u606f\uff1b\n\n# 3\u3001\u6267\u884c\u8303\u4f8b:\u8ba9\u547d\u4ee4\u4ee5\u65b0\u7684\u4f18\u5148\u7ea7\u6267\u884c\n&#91;root@localhost ~]# $ nice -n 5 ls  # nice -n -20 \u547d\u4ee4\n\n# 4\u3001\u8865\u5145\uff1aps -l \u547d\u4ee4\n\u5176\u4e2d\u7684\u51e0\u4e2a\u91cd\u8981\u4fe1\u606f\u6709\uff1a\nUID : \u4ee3\u8868\u6267\u884c\u8005\u7684\u8eab\u4efd\nPID : \u4ee3\u8868\u8fd9\u4e2a\u8fdb\u7a0b\u7684\u4ee3\u53f7\nPPID \uff1a\u4ee3\u8868\u8fd9\u4e2a\u8fdb\u7a0b\u662f\u7531\u54ea\u4e2a\u8fdb\u7a0b\u53d1\u5c55\u884d\u751f\u800c\u6765\u7684\uff0c\u4ea6\u5373\u7236\u8fdb\u7a0b\u7684\u4ee3\u53f7\nPRI \uff1a\u4ee3\u8868\u8fd9\u4e2a\u8fdb\u7a0b\u53ef\u88ab\u6267\u884c\u7684\u4f18\u5148\u7ea7\uff0c\u5176\u503c\u8d8a\u5c0f\u8d8a\u65e9\u88ab\u6267\u884c\nNI \uff1a\u4ee3\u8868\u8fd9\u4e2a\u8fdb\u7a0b\u7684nice\u503c\n\nPRI\u5373\u8fdb\u7a0b\u7684\u4f18\u5148\u7ea7\uff0c\u6b64\u503c\u8d8a\u5c0f\u8fdb\u7a0b\u7684\u4f18\u5148\u7ea7\u522b\u8d8a\u9ad8\u3002\u800cNI\uff0c\u4e5f\u5c31\u662f\u6211\u4eec\u6240\u8981\u8bf4\u7684nice\u503c(\u901a\u8fc7nice\u547d\u4ee4\u8bbe\u7f6e)\uff0c\u5176\u8868\u793a\u8fdb\u7a0b\u53ef\u88ab\u6267\u884c\u7684\u4f18\u5148\u7ea7\u7684\u4fee\u6b63\u6570\u503c\u3002\u5982\u524d\u9762\u6240\u8bf4\uff0cPRI\u503c\u8d8a\u5c0f\u8d8a\u5feb\u88ab\u6267\u884c\uff0c\u90a3\u4e48\u52a0\u5165nice\u503c\u540e\uff0c\u5c06\u4f1a\u4f7f\u5f97PRI\u53d8\u4e3a\uff1aPRI(new)=PRI(old)+nice\u3002\n\u6240\u4ee5\uff0cnice\u547d\u4ee4\u8bbe\u7f6e\u7684\u4f18\u5148\u7ea7\u4e0d\u662f\u7a0b\u5e8f\u6700\u7ec8\u7684\u4f18\u5148\u7ea7\uff0c\u800c\u53ea\u662f\u4f18\u5148\u7ea7\u7684\u4fee\u6b63\u6570\u503c\u3002\nrenice\u547d\u4ee4\u5141\u8bb8\u7528\u6237\u4fee\u6539\u4e00\u4e2a\u6b63\u5728\u8fd0\u884c\u7684\u8fdb\u7a0b\u7684\u4f18\u5148\u6743\u3002\n\n\u91cd\u65b0\u8bbe\u7f6enice\u503c\n&#91;root@localhost ~]# renice -20 pid\u53f7<\/code><\/pre>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"aeT7m\">\u7ed9\u8fdb\u7a0b\u53d1\u4fe1\u53f7\uff08kill\u547d\u4ee4\uff09<\/h2>\n\n\n\n<p id=\"u9b32a866\">[root@localhost ~]# kill -l # \u5217\u51fa\u6240\u6709\u652f\u6301\u7684\u4fe1\u53f7<\/p>\n\n\n\n<p id=\"ua71206dd\">=====================\u89e3\u91ca==========================<\/p>\n\n\n\n<p id=\"u4566ba5e\"># HUP(1): \u8be5\u4fe1\u53f7<\/p>\n\n\n\n<p id=\"u39a1e271\">\u6682\u65f6\u5ffd\u7565\uff0c\u540e\u7eed\u4f5c\u4e3a\u91cd\u70b9\u8be6\u7ec6\u4ecb\u7ecd<\/p>\n\n\n\n<p id=\"u5e0f2b5d\"># INT(2): \u4e2d\u65ad, \u901a\u5e38\u56e0\u4e3a\u6309\u4e0bctrl+c\u800c\u4ea7\u751f\u7684\u4fe1\u53f7\uff0c\u7528\u4e8e\u901a\u77e5\u524d\u53f0\u8fdb\u7a0b\u7ec4\u7ec8\u6b62\u8fdb\u7a0b\u3002<\/p>\n\n\n\n<p id=\"u747eb630\"># QUIT(3): \u9000\u51fa\uff0c\u548cSIGINT\u7c7b\u4f3c, \u4f46\u7531QUIT\u5b57\u7b26(\u901a\u5e38\u662fCtrl-\\)\u6765\u63a7\u5236. \u8fdb\u7a0b\u5728\u56e0\u6536\u5230SIGQUIT\u9000\u51fa\u65f6\u4f1a\u4ea7\u751fcore\u6587\u4ef6, \u5728\u8fd9\u4e2a\u610f\u4e49\u4e0a\u7c7b\u4f3c\u4e8e\u4e00\u4e2a\u7a0b\u5e8f\u9519\u8bef\u4fe1\u53f7\u3002<\/p>\n\n\n\n<p id=\"u14de1eb4\"># KILL (9)\uff1a\u6740\u6b7b\u8fdb\u7a0b\uff0c\u4e0d\u53ef\u4ee5\u88ab\u6355\u83b7\u3001\u5ffd\u7565\u548c\u963b\u585e\uff0c\u5982\u679c\u7ba1\u7406\u5458\u53d1\u73b0\u67d0\u4e2a\u8fdb\u7a0b\u7ec8\u6b62\u4e0d\u4e86\uff0c\u53ef\u5c1d\u8bd5\u53d1\u9001\u8fd9\u4e2a\u4fe1\u53f7\u3002<\/p>\n\n\n\n<p id=\"u94ccb361\"># TERM(15): \u6740\u6b7b\u8fdb\u7a0b\uff0c\u53ef\u4ee5\u88ab\u6355\u83b7\u3001\u5ffd\u7565\u548c\u963b\u585e\uff0c\u901a\u5e38\u7528TERM\u4fe1\u53f7\u6765\u8981\u6c42\u7a0b\u5e8f\u81ea\u5df1\u6b63\u5e38\u9000\u51fa\uff0c\u5982\u679c\u8fdb\u7a0b\u7ec8\u6b62\u4e0d\u4e86\uff0c\u6211\u4eec\u624d\u4f1a\u5c1d\u8bd5SIGKILL\u3002\u7a0b\u5e8f\u53ef\u4ee5\u5b9a\u5236\u5316\u5904\u7406\u8be5\u4fe1\u53f7\u3002<\/p>\n\n\n\n<p id=\"u2e0f9fb0\"># CONT(18) \u88ab\u6682\u505c\u7684\u8fdb\u7a0b\u5c06\u7ee7\u7eed\u6062\u590d\u8fd0\u884c<\/p>\n\n\n\n<p id=\"uf2db1406\"># SIGSTOP(19) \u6682\u505c\u8fdb\u7a0b\uff0c\u8be5\u4fe1\u53f7\u4e0d\u80fd\u88ab\u6355\u83b7\u3001\u5ffd\u7565\u548c\u963b\u585e<\/p>\n\n\n\n<p id=\"u5f561362\"># TSTP(20): \u4e5f\u662f\u6682\u505c\u8fdb\u7a0b\uff0c\u4e5f\u53ef\u4ee5\u7528\u952e\u76d8\u6309\u4e0bctrl+z\u4ea7\u751f\u8be5\u4fe1\u53f7\u3002\u4e0eSIGSTOP\u4e0d\u540c\u7684\u662f\uff0c\u8be5\u4fe1\u53f7\u53ef\u4ee5\u88ab\u6355\u83b7\u3001\u5ffd\u7565\u548c\u963b\u585e<\/p>\n\n\n\n<p id=\"u027272e8\"># SIGCHLD<\/p>\n\n\n\n<p id=\"u24588ea8\">\u5b50\u8fdb\u7a0b\u7ed3\u675f\u65f6, \u7236\u8fdb\u7a0b\u4f1a\u6536\u5230\u8fd9\u4e2a\u4fe1\u53f7\u3002<\/p>\n\n\n\n<p id=\"ued783e41\">\u5982\u679c\u7236\u8fdb\u7a0b\u6ca1\u6709\u5904\u7406\u8fd9\u4e2a\u4fe1\u53f7\uff0c\u4e5f\u6ca1\u6709\u7b49\u5f85(wait)\u5b50\u8fdb\u7a0b\uff0c\u5b50\u8fdb\u7a0b\u867d\u7136\u7ec8\u6b62\uff0c\u4f46\u662f\u8fd8\u4f1a\u5728\u5185\u6838\u8fdb\u7a0b\u8868\u4e2d\u5360\u6709\u8868\u9879\uff0c\u8fd9\u65f6\u7684\u5b50\u8fdb\u7a0b\u79f0\u4e3a\u50f5\u5c38 \u8fdb\u7a0b\u3002<\/p>\n\n\n\n<p id=\"u31503665\">\u8fd9\u79cd\u60c5 \u51b5\u6211\u4eec\u5e94\u8be5\u907f\u514d(\u7236\u8fdb\u7a0b\u6216\u8005\u5ffd\u7565SIGCHILD\u4fe1\u53f7\uff0c\u6216\u8005\u6355\u6349\u5b83\uff0c\u6216\u8005wait\u5b83\u6d3e\u751f\u7684\u5b50\u8fdb\u7a0b\uff0c\u6216\u8005\u7236\u8fdb\u7a0b\u5148\u7ec8\u6b62\uff0c<\/p>\n\n\n\n<p id=\"ub50874b3\">\u8fd9\u65f6\u5b50\u8fdb\u7a0b\u7684\u7ec8\u6b62\u81ea\u52a8\u7531init\u8fdb\u7a0b \u6765\u63a5\u7ba1)\u3002<\/p>\n\n\n\n<p id=\"u112d7544\"># \u66f4\u591a\u8be6\u89c1\uff1aman 7 signal<\/p>\n\n\n\n<p id=\"u4d6cb009\">\u8865\u51451\uff1a\u7528\u8fdb\u7a0b\u540d\u6740\u8fdb\u7a0b<\/p>\n\n\n\n<p id=\"uf912a556\">[root@egon ~]# vim egon.txt &amp;<\/p>\n\n\n\n<p id=\"u24c1fd8c\">[root@egon ~]# vim egon.txt &amp;<\/p>\n\n\n\n<p id=\"u826e4c1e\">[root@egon ~]# vim egon.txt &amp;<\/p>\n\n\n\n<p id=\"u5fe182b5\">[root@egon ~]# killall -9 vim<\/p>\n\n\n\n<p id=\"ufe9f263a\">[root@egon ~]# pkill -9 vim<\/p>\n\n\n\n<p id=\"u2dd748c8\">\u8865\u51452\uff1a\u67e5\u770b\u67d0\u4e2a\u7528\u6237\u5f00\u542f\u7684\u8fdb\u7a0b<\/p>\n\n\n\n<p id=\"uf7c2666d\">pgrep -l -u \u7528\u6237\u540d<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"UaPDH\">\u7ba1\u7406\u540e\u53f0\u8fdb\u7a0b<\/h2>\n\n\n\n<pre id=\"jZSbC\" class=\"wp-block-code\"><code># \u51c6\u5907\u811a\u672c\u6587\u4ef6\n#!\/bin\/bash\n \nfor i in `seq 1 1000000`;\ndo\n    sleep 1\n    echo $i &gt;&gt; \/tmp\/run.log\ndone\n \n&#91;root@localhost ~]# sh a.sh  # ^z,\u5c06\u524d\u53f0\u7684\u7a0b\u5e8f\u6302\u8d77\uff08\u6682\u505c\uff09\u5230\u540e\u53f0\n&#91;root@localhost ~]# jobs  # \u67e5\u770b\u540e\u53f0\u7684\u8fdb\u7a0b\uff0c\u4e2d\u62ec\u53f7\u5185\u7684\u7f16\u53f7\u5c31\u662f\u4f5c\u4e1a\u7f16\u53f7\uff0c%1\u4ee3\u8868\u4f5c\u4e1a1\n&#91;1]+  Stopped                 sh a.sh\n \n&#91;root@localhost ~]# bg %1  # \u7136\u540e\u540e\u53f0\u7684\u4f5c\u4e1a\uff0c\u76f4\u63a5\u5728\u540e\u53f0\u8fd0\u884c\n&#91;root@localhost ~]# fg %1  # \u5c06\u4f5c\u4e1a1\u8c03\u56de\u5230\u524d\u53f0\n&#91;root@localhost ~]# sh a.sh &amp; # \u8ba9\u4efb\u52a1\u5728\u540e\u53f0\u8fd0\u884c\n&#91;1] 61486\n&#91;root@localhost ~]# sh a.sh &amp; # \u8ba9\u4efb\u52a1\u5728\u540e\u53f0\u8fd0\u884c\n&#91;2] 61489\n&#91;root@localhost ~]# jobs     # \u67e5\u770b\u540e\u53f0\u7684\u4efb\u52a1\n&#91;1]- Running sh a.sh &amp;\n&#91;2]+ Running sh a.sh &amp;\n&#91;root@localhost ~]# kill %1\n&#91;root@localhost ~]# kill %2<\/code><\/pre>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"iDvF3\">hup\u4fe1\u53f7<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"hpssy\">HUP\u4fe1\u53f7\uff0c\u4e3b\u8981\u6d89\u53ca\u4e24\u79cd\u5e94\u7528\u573a\u666f\uff1a<\/h3>\n\n\n\n<p id=\"u1a48e404\">1\u3001\u7ec8\u7aef\u5173\u95ed\u65f6\uff0c\u7cfb\u7edf\u4f1a\u5411\u4e0e\u8be5\u7ec8\u7aef\u76f8\u8fde\u7684\u6240\u6709\u8fdb\u7a0b\u53d1\u9001SIGHUP\u4fe1\u53f7\uff0c\u8fd9\u4f1a\u5bfc\u81f4\u8fd9\u4e9b\u8fdb\u7a0b\u88ab\u5173\u95ed(\u6240\u6709\u624d\u6709\u4e86\u8131\u79bb\u7ec8\u7aef\u8fd0\u884c\u7684\u9700\u6c42)<\/p>\n\n\n\n<p id=\"u11debbb8\">2\u3001\u7528killl -1 \u547d\u4ee4\u7ed9\u8fdb\u7a0b\u53d1\u9001SIGHUP\u4fe1\u53f7\u5b9e\u73b0\u8be5\u8fdb\u7a0b\u7684\u5e73\u6ed1\u91cd\u542f<\/p>\n\n\n\n<p id=\"u4e790fbe\">\u9700\u8981\u6ce8\u610f\u7684\u662f\uff0c\u5e76\u975e\u6240\u6709\u7684\u8fdb\u7a0b\u6216\u5e94\u7528\u90fd\u80fd\u5904\u7406SIGHUP\u4fe1\u53f7\uff0c\u53ea\u6709\u7a0b\u5e8f\u5185\u5199\u8fc7\u4e13\u95e8\u7684\u6355\u83b7\u5e76\u5904\u7406\u8be5\u4fe1\u53f7\u7684\u4ee3\u7801\u624d\u884c\uff0cnginx\u7684\u6e90\u4ee3\u7801\u91cc\u5c31\u5199\u4e86\uff0c\u5e76\u4e14\u4f1a\u54cd\u5e94\u8be5\u4fe1\u53f7\u6765\u5b9e\u73b0\u5e73\u6ed1\u91cd\u542f<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"BuWaO\">\u8131\u79bb\u7ec8\u7aef\u8fd0\u884c\u6765\u89c4\u907fhup\u4fe1\u53f7\u5f71\u54cd<\/h3>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"jkWtC\">1 nohup\u547d\u4ee4<\/h4>\n\n\n\n<p id=\"u020a5cc3\">\u6bd4\u5982\uff1aping baidu.com &amp; \u8fd9\u91cc\u52a0and\u7b26\u53f7\u540e\u53f0\u8fd0\u884c\uff0c\u8f93\u51fa\u5230nohup.out<\/p>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"Q8acE\">2 setsid\u547d\u4ee4<\/h4>\n\n\n\n<p id=\"ue7bd255e\">\u9488\u5bf9\u65b9\u68481\uff0c\u6211\u4eec\u8fd8\u53ef\u4ee5\u7528setsid\u547d\u4ee4\u5b9e\u73b0\uff0c\u539f\u7406\u4e0e3.1\u662f\u4e00\u6837\u7684\uff0cSetid\u662f\u76f4\u63a5\u5c06\u8fdb\u7a0b\u7684\u7236pid\u8bbe\u7f6e\u62101\uff0c\u5373\u8ba9\u8fd0\u884c\u7684\u8fdb\u7a0b\u5f52\u5c5e\u4e8einit\u7684\u5b50\u8fdb\u7a0b\uff0c\u90a3\u4e48\u9664\u975einit\u7ed3\u675f\uff0c\u8be5\u5b50\u8fdb\u7a0b\u624d\u4f1a\u7ed3\u675f\uff0c\u5f53\u524d\u8fdb\u7a0b\u6240\u5728\u7684\u7ec8\u7aef\u7ed3\u675f\u540e\u5e76\u4e0d\u4f1a\u5f71\u54cd\u8fdb\u7a0b\u7684\u8fd0\u884c<\/p>\n\n\n\n<pre id=\"y7oLa\" class=\"wp-block-code\"><code># 1\u3001\u5728\u7ec8\u7aef2\u4e2d\u6267\u884c\u547d\u4ee4\n&#91;root@egon ~]# setsid ping www.baidu.com  # \u4e5f\u53ef\u4ee5\u5728\u540e\u9762\u52a0&amp;\u7b26\u53f7\n \n# 2\u3001\u5173\u95ed\u7ec8\u7aef2\n \n# 3\u3001\u5728\u7ec8\u7aef1\u4e2d\u67e5\u770b\n&#91;root@egon ~]# ps -ef |grep &#91;p]ing\nroot     102335      1  0 17:53 ?        00:00:00 ping www.baidu.com<\/code><\/pre>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"ayK05\">3 \u5728\u5b50shell\u4e2d\u63d0\u4ea4\u4efb\u52a1<\/h4>\n\n\n\n<p id=\"u87b5f151\"># 1\u3001\u5728\u7ec8\u7aef2\u4e2d\u6267\u884c\u547d\u4ee4<\/p>\n\n\n\n<pre id=\"qVOrs\" class=\"wp-block-code\"><code>&#91;root@egon ~]# (ping www.baidu.com &amp;)  # \u63d0\u4ea4\u7684\u4f5c\u4e1a\u5e76\u4e0d\u5728\u4f5c\u4e1a\u5217\u8868\u4e2d\n \n# 2\u3001\u5173\u95ed\u7ec8\u7aef2\n \n# 3\u3001\u5728\u7ec8\u7aef1\u4e2d\u67e5\u770b\n&#91;root@egon ~]# ps -ef |grep &#91;p]ing\nroot     102361      1  0 17:55 ?        00:00:00 ping www.baidu.com\n \n\u53ef\u4ee5\u770b\u5230\u65b0\u63d0\u4ea4\u7684\u8fdb\u7a0b\u7684\u7236 ID\uff08PPID\uff09\u4e3a1\uff08init \u8fdb\u7a0b\u7684 PID\uff09\uff0c\u5e76\u4e0d\u662f\u5f53\u524d\u7ec8\u7aef\u7684\u8fdb\u7a0b ID\u3002\u56e0\u6b64\u5e76\u4e0d\u5c5e\u4e8e\u5f53\u524d\u7ec8\u7aef\u7684\u5b50\u8fdb\u7a0b\uff0c\u4ece\u800c\u4e5f\u5c31\u4e0d\u4f1a\u53d7\u5230\u5f53\u524d\u7ec8\u7aef\u7684Linux HUP\u4fe1\u53f7\u7684\u5f71\u54cd\u4e86\u3002<\/code><\/pre>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"dD4R4\">\u7528hup\u4fe1\u53f7\u5b9e\u73b0\u5e73\u6ed1\u91cd\u542f<\/h3>\n\n\n\n<p id=\"u45107250\">1\u3001\u4ec0\u4e48\u662f\u5e73\u6ed1\u91cd\u542f\uff1a\u5e73\u6ed1\u91cd\u542f\u662f\u4e00\u79cd\u7279\u6b8a\u7684\u91cd\u542f\u65b9\u5f0f\uff0c\u5b83\u5141\u8bb8\u7cfb\u7edf\u6216\u670d\u52a1\u5728\u4e0d\u4e2d\u65ad\u5bf9\u73b0\u6709\u7528\u6237\u670d\u52a1\u7684\u524d\u63d0\u4e0b\uff0c\u5b9e\u73b0\u65b0\u7684\u4ee3\u7801\u90e8\u7f72\u6216\u914d\u7f6e\u7684\u66f4\u65b0\u3002<\/p>\n\n\n\n<p id=\"uf66aa67d\">2\u3001\u4e3a\u4f55\u8981\u5e73\u6ed1\u91cd\u542f\uff1a\u5728\u65e5\u5e38\u7684\u7cfb\u7edf\u7ef4\u62a4\u548c\u5f00\u53d1\u4e2d\uff0c\u6211\u4eec\u9700\u8981\u66f4\u65b0\u4ee3\u7801\u6216\u8005\u4fee\u6539\u7cfb\u7edf\u914d\u7f6e\uff0c\u8fd9\u5c31\u9700\u8981\u91cd\u542f\u670d\u52a1\u3002\u4f46\u662f\uff0c\u5982\u679c\u6211\u4eec\u76f4\u63a5\u91cd\u542f\uff0c\u5f53\u524d\u7684\u7528\u6237\u8bf7\u6c42\u5c31\u4f1a\u88ab\u4e2d\u65ad\u3002\u5e73\u6ed1\u91cd\u542f\u53ef\u4ee5\u505a\u5230\u5728\u4e0d\u5f71\u54cd\u7528\u6237\u7684\u60c5\u51b5\u4e0b\uff0c\u5b8c\u6210\u8fd9\u4e9b\u5de5\u4f5c\u3002\u8fd9\u5bf9\u4e8e\u9700\u8981\u957f\u671f\u7a33\u5b9a\u8fd0\u884c\u7684\u7cfb\u7edf\u5c24\u5176\u91cd\u8981\u3002<\/p>\n\n\n\n<p id=\"uddbc8619\">3\u3001\u5982\u4f55\u5b9e\u73b0\u5e73\u6ed1\u91cd\u542f\uff1a\u5728Linux\u7cfb\u7edf\u4e0a\u5b9e\u73b0\u5e73\u6ed1\u91cd\u542f\uff0c\u9996\u5148\u9700\u8981\u5f00\u53d1\u8005\u5728\u7a0b\u5e8f\u4ee3\u7801\u4e2d\u5904\u7406\u597d\u4fe1\u53f7\u7684\u63a5\u6536\u548c\u5bf9\u5e94\u64cd\u4f5c\uff0c\u4f8b\u5982nginx\u505a\u4e86\u5904\u7406<\/p>\n\n\n\n<p id=\"uf1ee0de6\">\u518d\u6b21\u5f3a\u8c03\uff0c\u5e73\u6ed1\u91cd\u542f\u5e76\u4e0d\u662f\u6240\u6709\u5e94\u7528\u90fd\u53ef\u4ee5\u7684\uff0c\u5b83\u9700\u8981\u5e94\u7528\u652f\u6301\u5bf9\u5e94\u7684\u4fe1\u53f7\u5904\u7406\u548c\u65b0\u65e7\u8fdb\u7a0b\u7684\u7ba1\u7406\u3002<\/p>\n\n\n\n<p id=\"ufe4ebbcc\">\u4e00\u822c\u7684\u6b65\u9aa4\u5982\u4e0b\uff1a<\/p>\n\n\n\n<p id=\"u9e864ef7\">1\u3001\u670d\u52a1\u4e3b\u8fdb\u7a0b\u6536\u5230\u91cd\u542f\u4fe1\u53f7\uff0c\u5982SIGHUP\u3002<\/p>\n\n\n\n<p id=\"u88426b4f\">2\u3001\u4e3b\u8fdb\u7a0b\u542f\u52a8\u65b0\u7684\u5b50\u8fdb\u7a0b\u52a0\u8f7d\u66f4\u65b0\u540e\u7684\u7a0b\u5e8f\u6216\u8005\u914d\u7f6e\uff0c\u65b0\u7684\u5b50\u8fdb\u7a0b\u5f00\u59cb\u63a5\u53d7\u65b0\u7684\u8bf7\u6c42\u3002<\/p>\n\n\n\n<p id=\"u6a469c80\">3\u3001\u4e3b\u8fdb\u7a0b\u5173\u95ed\u65e7\u7684\u5b50\u8fdb\u7a0b\u7684\u65b0\u8fde\u63a5\u63a5\u6536\uff0c\u8ba9\u5b83\u4eec\u4ec5\u5904\u7406\u5b8c\u5df2\u5b58\u5728\u7684\u8bf7\u6c42\u3002<\/p>\n\n\n\n<p id=\"u6981abfc\">4\u3001\u65e7\u7684\u5b50\u8fdb\u7a0b\u5904\u7406\u5b8c\u8bf7\u6c42\u540e\u9000\u51fa\uff0c\u5b9e\u73b0\u4e86\u5e73\u6ed1\u91cd\u542f\u3002<\/p>\n\n\n\n<p id=\"u6740aa7a\">\u4f8b\u5982\uff0c\u5728Nginx\u4e2d\uff0c\u53ef\u4ee5\u901a\u8fc7kill-HUP\u547d\u4ee4\u5b9e\u73b0\u5e73\u6ed1\u91cd\u542f\uff0c\u5176\u4e2d\u662fNginx\u4e3b\u8fdb\u7a0b\u7684\u8fdb\u7a0bID\u3002\u5f53Nginx\u4e3b\u8fdb\u7a0b\u63a5\u6536\u5230HuP\u4fe1\u53f7\u540e\uff0c\u5b83\u4f1a\u5e73\u6ed1\u5730\u5173\u95ed\u65e7\u7684worker\u8fdb\u7a0b\u5e76\u542f\u52a8\u65b0\u7684worker\u8fdb\u7a0b\u3002<\/p>\n\n\n\n<h1 class=\"wp-block-heading\" id=\"FS874\">\u67e5\u770b\u7f51\u7edc\u72b6\u6001<\/h1>\n\n\n\n<p id=\"uc5bc6bbd\">\u7f51\u7edc\u8bbf\u95ee\u591a\uff0c\u9ad8\u5e76\u53d1\u7684\u65f6\u5019\uff0ccpu\uff0c\u5185\u5b58\uff0c\u786c\u76d8\u90fd\u4f1a\u88ab\u5360\u7528\u5927\u91cf\u8d44\u6e90\u3002\u5ba2\u6237\u7aef\u8fdb\u6765\u4f1a\u5360\u7528\u8fdb\u7a0b\uff0c\u5360\u7528\u6587\u4ef6\u63cf\u8ff0\u7b26\u3002\u7136\u540e\u6587\u4ef6\u8bfb\u6570\u636e\u9700\u8981\u6d88\u8017\u786c\u76d8\uff0c\u52a0\u8f7d\u5230\u5185\u5b58\u9700\u8981\u6d88\u8017\u5185\u5b58\uff0c\u8fd0\u884c\u7a0b\u5e8f\u9700\u8981\u6d88\u8017cpu\u3002<\/p>\n\n\n\n<p id=\"u518b0582\">[root@tianyun ~]# netstat -tunalp # \u67e5\u770b\u6b63\u5728\u76d1\u542c\u7684\uff0c\u4e14\u4f7f\u7528tcp\u548cudp\u534f\u8bae\u7684\u8fdb\u7a0b<br>-t tcp\u534f\u8bae<br>-u udp\u534f\u8bae<br>-l listen<br>-p PID\/Program name<br>-n \u4e0d\u53cd\u89e3\uff0c\u4e0d\u5c06IP\u5730\u5740\u89e3\u6790\u4e3a\u4e3b\u673a\u540d\uff0c\u4e0d\u5c06\u7aef\u53e3\u53f7\u89e3\u6790\u6210\u534f\u8bae\u540d\uff0880 &#8212;&gt; http\uff09<\/p>\n\n\n\n<p id=\"uc4f28c4e\">-a \u5168\u90e8\u4fe1\u606f<\/p>\n\n\n\n<p id=\"u1c6c79ca\">[root@egon ~]# netstat -an |grep :22<\/p>\n\n\n\n<p id=\"u8e50d653\">[root@egon ~]# netstat -an |grep :80<\/p>\n\n\n\n<p id=\"u3a962fe2\">[root@egon ~]# lsof -i:22<\/p>\n\n\n\n<h1 class=\"wp-block-heading\" id=\"iqG9k\">proc\u6587\u4ef6\u7cfb\u7edf<\/h1>\n\n\n\n<p id=\"u0d9760d0\">top\u547d\u4ee4\u7edf\u8ba1\u7684cpu\u72b6\u6001\u4fe1\u606f\u5c31\u662f\u4ece\/proc\/stat\u4e2d\u53d6\uff0c\u7cfb\u7edf\u6240\u6709\u8fdb\u7a0b\u7684\u8fd0\u884c\u72b6\u6001\u90fd\u5728\/proc\u4e0b<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"mJ6sE\">\u770bcpu<\/h2>\n\n\n\n<pre id=\"ve0OV\" class=\"wp-block-code\"><code>&#91;root@localhost ~]# grep \"processor\" \/proc\/cpuinfo   # \u903b\u8f91cpu\u4e2a\u6570\nprocessor   : 0\n&#91;root@localhost ~]# grep \"physical id\" \/proc\/cpuinfo # \u7269\u7406cpu\u4e2a\u6570\n&#91;root@localhost ~]# grep \"cpu cores\" \/proc\/cpuinfo  # \u6bcf\u4e2acpu\u7684\u6838\u6570\ncpu cores   : 1\n \n&#91;root@localhost ~]# cat \/proc\/cpuinfo \n==flags\nlm\uff0864\u4f4d\uff09\nvmx \u652f\u6301\u865a\u62df\u5316 Intel\nsvm \u652f\u6301\u865a\u62df\u5316 AMD\n&#91;root@localhost ~]# egrep --color 'lm|vmx|svm' \/proc\/cpuinfo \n&#91;root@localhost ~]# lscpu\n<\/code><\/pre>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"EAfvM\">\u770b\u5185\u5b58<\/h2>\n\n\n\n<pre id=\"yCEuV\" class=\"wp-block-code\"><code># \u67e5\u770b\u5185\u5b58\n&#91;root@egon ~]# less \/proc\/meminfo\n&#91;root@egon ~]# free -wm\n              total        used        free      shared     buffers       cache   available\nMem:           1980         192        1713           9           0          74        1671\nSwap:          1023           0        1023\n&#91;root@egon ~]# free -m\n              total        used        free      shared  buff\/cache   available\nMem:           1980         192        1713           9          74        1672\nSwap:          1023           0        1023\n \n\u9700\u8981\u6ce8\u610f\u7684\u662f\nfree\u8868\u793a\u7684\u662f\u5f53\u524d\u5b8c\u5168\u6ca1\u6709\u88ab\u7a0b\u5e8f\u4f7f\u7528\u7684\u5185\u5b58\uff1b\n\u800ccache\u5728\u6709\u9700\u8981\u65f6\uff0c\u662f\u53ef\u4ee5\u88ab\u91ca\u653e\u51fa\u6765\u4ee5\u4f9b\u5176\u5b83\u8fdb\u7a0b\u4f7f\u7528\u7684\uff08\u5f53\u7136\uff0c\u5e76\u4e0d\u662f\u6240\u6709cache\u90fd\u53ef\u4ee5\u91ca\u653e\uff0c\u6bd4\u5982\u5f53\u524d\u88ab\u7528\u4f5cramfs\u7684\u5185\u5b58\uff09\u3002\n\u800cavailable\u624d\u662f\u771f\u6b63\u8868\u660e\u7cfb\u7edf\u76ee\u524d\u53ef\u4ee5\u63d0\u4f9b\u7ed9\u65b0\u542f\u52a8\u7684\u5e94\u7528\u7a0b\u5e8f\u4f7f\u7528\u7684\u5185\u5b58\u3002\n\/proc\/meminfo\u4ece3.14\u5185\u6838\u7248\u672c\u5f00\u59cb\u63d0\u4f9bMemAvailable\u7684\u503c\uff1b\u57282.6.27~3.14\u7248\u672c\u4e4b\u95f4\uff0c\u662ffree\u7a0b\u5e8f\u81ea\u5df1\u8ba1\u7b97available\u7684\u503c\uff1b\u65e9\u4e8e2.6.27\u7248\u672c\uff0cavailable\u7684\u503c\u5219\u540cfree\u4e00\u6837\u3002\n&#91;root@egon ~]# man free # \u770b\u4e00\u773c\u5199\u7684\u6e05\u6e05\u695a\u695a\n \n# \u91ca\u653e\u5185\u5b58\u4e3e\u4f8b\uff1a    \n&#91;root@egon ~]# free \n              total        used        free      shared  buff\/cache   available\nMem:        2027876      208392      870612       10236      948872     1649684\nSwap:       1048572         264     1048308\n&#91;root@egon ~]# echo 3 &gt; \/proc\/sys\/vm\/drop_caches \n&#91;root@egon ~]# free \n              total        used        free      shared  buff\/cache   available\nMem:        2027876      194788     1765520       10236       67568     1718768\nSwap:       1048572         264     1048308\n&#91;root@egon ~]# <\/code><\/pre>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"rVB95\">\u770b\u5185\u6838\u542f\u52a8\u53c2\u6570<\/h2>\n\n\n\n<pre id=\"RlWkj\" class=\"wp-block-code\"><code>&#91;root@localhost ~]# cat \/proc\/cmdline\nBOOT_IMAGE=\/vmlinuz-3.10.0-1127.13.1.el7.x86_64 root=UUID=84b5cfa6-b0dc-4d7a-a8fd-0302f0eb2f04 ro rhgb quiet LANG=zh_CN.UTF-8\n \n&#91;root@localhost ~]# uptime\n 17:42:40 up 1 day,  1:33,  2 users,  load average: 0.00, 0.01, 0.05<\/code><\/pre>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"PLFra\">\u5378\u8f7d \/proc<\/h2>\n\n\n\n<pre id=\"ROWIr\" class=\"wp-block-code\"><code>&#91;root@localhost ~]# umount \/proc -l\n \n# \u4e0b\u8ff0\u547d\u4ee4\u90fd\u4e0d\u53ef\u7528\nfree -m\nuptime\nlscpu\ntop\n \n# \u91cd\u65b0\u6302\u8f7d\n&#91;root@localhost ~]# mount -t proc proc \/proc\/\n-t proc     \u6307\u5b9a\u6587\u4ef6\u7cfb\u7edf\u7684\u7c7b\u578b\nproc        \u6587\u4ef6\u7cfb\u7edf\uff0c\u865a\u62df\u6587\u4ef6\u7cfb\u7edf\n\/proc       \u6302\u8f7d\u70b9<\/code><\/pre>\n\n\n\n<h1 class=\"wp-block-heading\" id=\"o1HEl\">\u7ba1\u9053<\/h1>\n\n\n\n<p id=\"u53c1f2a5\">\u8fdb\u7a0b\u95f4\u7684\u901a\u4fe1\u9700\u8981\u7528\u7ba1\u9053 &#8216;xxx | xxx&#8217;, \u4e3b\u8981\u7528\u6765\u8fde\u63a5\u5de6\u53f3\u4e24\u4e2a\u547d\u4ee4\uff0c\u5c06\u5de6\u4fa7\u7684\u547d\u4ee4\u7684\u6807\u51c6\u8f93\u51fa\uff0c\u4ea4\u7ed9\u53f3\u4fa7\u547d\u4ee4\u7684\u6807\u51c6\u8f93\u5165<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/zhaoyanqi.cn\/wp-content\/uploads\/2024\/05\/image-7.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  loading=\"lazy\" decoding=\"async\" width=\"606\" height=\"171\" data-original=\"https:\/\/zhaoyanqi.cn\/wp-content\/uploads\/2024\/05\/image-7.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-105\"  sizes=\"auto, (max-width: 606px) 100vw, 606px\" \/><\/div><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"aE47S\">\u51e0\u4e2a\u5e38\u7528\u65b9\u6cd5<\/h2>\n\n\n\n<p id=\"u6f5fc51e\">\u7edf\u8ba1\u5f53\u524d\/etc\/passwd\u4e2d\u7528\u6237\u4f7f\u7528\u7684shell\u7c7b\u578b<\/p>\n\n\n\n<p id=\"ud635fee8\">[root@localhost ~]# awk -F: &#8216;{print $7}&#8217; \/etc\/passwd | sort |uniq -c<\/p>\n\n\n\n<p id=\"ucbc78537\">2 \/bin\/bash<\/p>\n\n\n\n<p id=\"u8b489e6d\">1 \/bin\/sync<\/p>\n\n\n\n<p id=\"uc6339c25\">1 \/sbin\/halt<\/p>\n\n\n\n<p id=\"u4c592fe5\">40 \/sbin\/nologin<\/p>\n\n\n\n<p id=\"ubf9b5096\">1 \/sbin\/shutdown<\/p>\n\n\n\n<p id=\"u12348117\">\u7edf\u8ba1\u7f51\u7ad9\u7684\u8bbf\u95ee\u60c5\u51b5<\/p>\n\n\n\n<p id=\"u4c49763e\">[root@localhost ~]# netstat -an |grep :80 |awk -F&#8221;:&#8221; &#8216;{print $8}&#8217;|sort |uniq -c<\/p>\n\n\n\n<p id=\"uace9e3d1\">\u6253\u5370\u5f53\u524d\u6240\u6709IP<\/p>\n\n\n\n<p id=\"uaf6aeaae\">[root@localhost ~]# ip addr |grep &#8216;inet &#8216; |awk &#8216;{print $2}&#8217; |awk -F&#8221;\/&#8221; &#8216;{print $1}&#8217;<\/p>\n\n\n\n<p id=\"u26c8274c\">127.0.0.1<\/p>\n\n\n\n<p id=\"u35387cd9\">192.168.12.21<\/p>\n\n\n\n<p id=\"ue5a9135a\">192.168.122.1<\/p>\n\n\n\n<p id=\"ud232e13e\">\u6253\u5370\u6839\u5206\u533a\u5df2\u7528\u7a7a\u95f4\u7684\u767e\u5206\u6bd4\uff08\u4ec5\u6253\u5370\u6570\u5b57\uff09<\/p>\n\n\n\n<p id=\"udd2796d2\">[root@localhost ~]# df -P|grep &#8216;\/$&#8217; |awk &#8216;{print $5}&#8217;|awk -F&#8221;%&#8221; &#8216;{print $1}&#8217;<\/p>\n\n\n\n<p id=\"ub2d903a9\">50<\/p>\n\n\n\n<p id=\"ue7950254\">\u7edf\u8ba1\u7f51\u7ad9\u7684\u8bbf\u95ee\u6700\u591a\u7684iptop10<\/p>\n\n\n\n<p id=\"ud4685040\">#\u601d\u8def: \u6253\u5370\u6240\u6709\u8bbf\u95ee\u7684\u8fc7\u6765\u7684ip | \u6392\u5e8f | \u53bb\u91cd | \u5012\u5e8f\u6392\u5e8f | \u53d6\u524d10<\/p>\n\n\n\n<p id=\"u423bc4cc\">[root@egon ~]# awk &#8216;{print $1}&#8217; access.log |sort |uniq -c |sort -rn|head<\/p>\n\n\n\n<p id=\"ue7cbd05c\">12049 58.220.223.62<\/p>\n\n\n\n<p id=\"ua427f0ab\">10856 112.64.171.98<\/p>\n\n\n\n<p id=\"ua355aed4\">1982 114.83.184.139<\/p>\n\n\n\n<p id=\"u9a7fbdc4\">1662 117.136.66.10<\/p>\n\n\n\n<p id=\"u9956e0c3\">1318 115.29.245.13<\/p>\n\n\n\n<p id=\"u55edc5ea\">961 223.104.5.197<\/p>\n\n\n\n<p id=\"u1c5558b9\">957 116.216.0.60<\/p>\n\n\n\n<p id=\"ub6cddab8\">939 180.111.48.14<\/p>\n\n\n\n<p id=\"uf344f8ce\">871 223.104.5.202<\/p>\n\n\n\n<p id=\"ud5722b7e\">869 223.104.4.139<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"m4d6N\">tee \u547d\u4ee4\uff0c\u8ffd\u52a0\u8fdb\u4e00\u4e2a\u6587\u4ef6<\/h2>\n\n\n\n<p id=\"u35502d74\">[root@egon ~]# ip address |grep &#8216;inet &#8216; |awk -F&#8221;\/&#8221; &#8216;{print $1}&#8217; |awk &#8216;{print $2}&#8217; |tee ip.txt<\/p>\n\n\n\n<p id=\"u3c8cfd75\">127.0.0.1<\/p>\n\n\n\n<p id=\"ub566833b\">10.0.0.41<\/p>\n\n\n\n<p id=\"u233c051b\">172.16.1.41<\/p>\n\n\n\n<p id=\"u7e778159\">10.8.0.1<\/p>\n\n\n\n<p id=\"u767a6720\">[root@egon ~]# cat ip.txt<\/p>\n\n\n\n<p id=\"u2fd0e377\">127.0.0.1<\/p>\n\n\n\n<p id=\"u7291a658\">10.0.0.41<\/p>\n\n\n\n<p id=\"u789f355e\">172.16.1.41<\/p>\n\n\n\n<p id=\"u685f23c9\">10.8.0.1<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u8be6\u89c1egon\u535a\u5ba2\uff1ahttps:\/\/egonlin.com\/?p=210 \u7279\u6b8a\u8fdb\u7a0b \u50f5\u5c38\u8fdb\u7a0b #1\u3001\u4ec0\u4e48\u662f\u50f5\u5c38\u8fdb [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[5],"tags":[],"class_list":["post-104","post","type-post","status-publish","format-standard","hentry","category-linux"],"_links":{"self":[{"href":"https:\/\/zhaoyanqi.cn\/index.php?rest_route=\/wp\/v2\/posts\/104","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/zhaoyanqi.cn\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/zhaoyanqi.cn\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/zhaoyanqi.cn\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/zhaoyanqi.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=104"}],"version-history":[{"count":1,"href":"https:\/\/zhaoyanqi.cn\/index.php?rest_route=\/wp\/v2\/posts\/104\/revisions"}],"predecessor-version":[{"id":106,"href":"https:\/\/zhaoyanqi.cn\/index.php?rest_route=\/wp\/v2\/posts\/104\/revisions\/106"}],"wp:attachment":[{"href":"https:\/\/zhaoyanqi.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=104"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/zhaoyanqi.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=104"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/zhaoyanqi.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=104"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}