{"id":671,"date":"2016-03-16T15:32:05","date_gmt":"2016-03-16T07:32:05","guid":{"rendered":"https:\/\/yanjingang.com\/blog\/?p=671"},"modified":"2016-03-16T15:32:05","modified_gmt":"2016-03-16T07:32:05","slug":"linux-lsof%e5%91%bd%e4%bb%a4%e8%af%a6%e8%a7%a3","status":"publish","type":"post","link":"https:\/\/yanjingang.com\/blog\/?p=671","title":{"rendered":"linux lsof\u547d\u4ee4\u8be6\u89e3"},"content":{"rendered":"

\u7b80\u4ecb<\/strong><\/h1>\n

lsof(list open files)\u662f\u4e00\u4e2a\u5217\u51fa\u5f53\u524d\u7cfb\u7edf\u6253\u5f00\u6587\u4ef6\u7684\u5de5\u5177\u3002\u5728linux\u73af\u5883\u4e0b\uff0c\u4efb\u4f55\u4e8b\u7269\u90fd\u4ee5\u6587\u4ef6\u7684\u5f62\u5f0f\u5b58\u5728\uff0c\u901a\u8fc7\u6587\u4ef6\u4e0d\u4ec5\u4ec5\u53ef\u4ee5\u8bbf\u95ee\u5e38\u89c4\u6570\u636e\uff0c\u8fd8\u53ef\u4ee5\u8bbf\u95ee\u7f51\u7edc\u8fde\u63a5\u548c\u786c\u4ef6\u3002\u6240\u4ee5\u5982\u4f20\u8f93\u63a7\u5236\u534f\u8bae (TCP) \u548c\u7528\u6237\u6570\u636e\u62a5\u534f\u8bae (UDP) \u5957\u63a5\u5b57\u7b49\uff0c\u7cfb\u7edf\u5728\u540e\u53f0\u90fd\u4e3a\u8be5\u5e94\u7528\u7a0b\u5e8f\u5206\u914d\u4e86\u4e00\u4e2a\u6587\u4ef6\u63cf\u8ff0\u7b26\uff0c\u65e0\u8bba\u8fd9\u4e2a\u6587\u4ef6\u7684\u672c\u8d28\u5982\u4f55\uff0c\u8be5\u6587\u4ef6\u63cf\u8ff0\u7b26\u4e3a\u5e94\u7528\u7a0b\u5e8f\u4e0e\u57fa\u7840\u64cd\u4f5c\u7cfb\u7edf\u4e4b\u95f4\u7684\u4ea4\u4e92\u63d0\u4f9b\u4e86\u901a\u7528\u63a5\u53e3\u3002\u56e0\u4e3a\u5e94\u7528\u7a0b\u5e8f\u6253\u5f00\u6587\u4ef6\u7684\u63cf\u8ff0\u7b26\u5217\u8868\u63d0\u4f9b\u4e86\u5927\u91cf\u5173\u4e8e\u8fd9\u4e2a\u5e94\u7528\u7a0b\u5e8f\u672c\u8eab\u7684\u4fe1\u606f\uff0c\u56e0\u6b64\u901a\u8fc7lsof\u5de5\u5177\u80fd\u591f\u67e5\u770b\u8fd9\u4e2a\u5217\u8868\u5bf9\u7cfb\u7edf\u76d1\u6d4b\u4ee5\u53ca\u6392\u9519\u5c06\u662f\u5f88\u6709\u5e2e\u52a9\u7684\u3002<\/p>\n

 <\/p>\n

\u8f93\u51fa\u4fe1\u606f\u542b\u4e49<\/strong><\/h1>\n

\u5728\u7ec8\u7aef\u4e0b\u8f93\u5165lsof\u5373\u53ef\u663e\u793a\u7cfb\u7edf\u6253\u5f00\u7684\u6587\u4ef6\uff0c\u56e0\u4e3a lsof \u9700\u8981\u8bbf\u95ee\u6838\u5fc3\u5185\u5b58\u548c\u5404\u79cd\u6587\u4ef6\uff0c\u6240\u4ee5\u5fc5\u987b\u4ee5 root \u7528\u6237\u7684\u8eab\u4efd\u8fd0\u884c\u5b83\u624d\u80fd\u591f\u5145\u5206\u5730\u53d1\u6325\u5176\u529f\u80fd\u3002<\/p>\n

\u76f4\u63a5\u8f93\u5165lsof\u90e8\u5206\u8f93\u51fa\u4e3a:<\/p>\n

\n
COMMAND     PID        USER   FD      TYPE             DEVICE SIZE\/OFF       NODE NAME\r\ninit          1        root  cwd       DIR                8,1     4096          2 \/\r\ninit          1        root  rtd       DIR                8,1     4096          2 \/\r\ninit          1        root  txt       REG                8,1   150584     654127 \/sbin\/init\r\nudevd       415        root    0u      CHR                1,3      0t0       6254 \/dev\/null\r\nudevd       415        root    1u      CHR                1,3      0t0       6254 \/dev\/null\r\nudevd       415        root    2u      CHR                1,3      0t0       6254 \/dev\/null\r\nudevd       690        root  mem       REG                8,1    51736     302589 \/lib\/x86_64-linux-gnu\/libnss_files-2.13.so\r\nsyslogd    1246      syslog    2w      REG                8,1    10187     245418 \/var\/log\/auth.log\r\nsyslogd    1246      syslog    3w      REG                8,1    10118     245342 \/var\/log\/syslog\r\ndd         1271        root    0r      REG                0,3        0 4026532038 \/proc\/kmsg\r\ndd         1271        root    1w     FIFO               0,15      0t0        409 \/run\/klogd\/kmsg\r\ndd         1271        root    2u      CHR                1,3      0t0       6254 \/dev\/null<\/pre>\n
<\/div>\n<\/div>\n
\u6bcf\u884c\u663e\u793a\u4e00\u4e2a\u6253\u5f00\u7684\u6587\u4ef6\uff0c\u82e5\u4e0d\u6307\u5b9a\u6761\u4ef6\u9ed8\u8ba4\u5c06\u663e\u793a\u6240\u6709\u8fdb\u7a0b\u6253\u5f00\u7684\u6240\u6709\u6587\u4ef6\u3002<\/p>\n
lsof\u8f93\u51fa\u5404\u5217\u4fe1\u606f\u7684\u610f\u4e49\u5982\u4e0b\uff1a<\/p>\n
COMMAND\uff1a\u8fdb\u7a0b\u7684\u540d\u79f0 PID\uff1a\u8fdb\u7a0b\u6807\u8bc6\u7b26<\/p>\n
USER\uff1a\u8fdb\u7a0b\u6240\u6709\u8005<\/p>\n
FD\uff1a\u6587\u4ef6\u63cf\u8ff0\u7b26\uff0c\u5e94\u7528\u7a0b\u5e8f\u901a\u8fc7\u6587\u4ef6\u63cf\u8ff0\u7b26\u8bc6\u522b\u8be5\u6587\u4ef6\u3002\u5982cwd\u3001txt\u7b49 TYPE\uff1a\u6587\u4ef6\u7c7b\u578b\uff0c\u5982DIR\u3001REG\u7b49<\/p>\n
DEVICE\uff1a\u6307\u5b9a\u78c1\u76d8\u7684\u540d\u79f0<\/p>\n
SIZE\uff1a\u6587\u4ef6\u7684\u5927\u5c0f<\/p>\n
NODE\uff1a\u7d22\u5f15\u8282\u70b9\uff08\u6587\u4ef6\u5728\u78c1\u76d8\u4e0a\u7684\u6807\u8bc6\uff09<\/p>\n
NAME\uff1a\u6253\u5f00\u6587\u4ef6\u7684\u786e\u5207\u540d\u79f0
\nFD \u5217\u4e2d\u7684\u6587\u4ef6\u63cf\u8ff0\u7b26cwd \u503c\u8868\u793a\u5e94\u7528\u7a0b\u5e8f\u7684\u5f53\u524d\u5de5\u4f5c\u76ee\u5f55\uff0c\u8fd9\u662f\u8be5\u5e94\u7528\u7a0b\u5e8f\u542f\u52a8\u7684\u76ee\u5f55\uff0c\u9664\u975e\u5b83\u672c\u8eab\u5bf9\u8fd9\u4e2a\u76ee\u5f55\u8fdb\u884c\u66f4\u6539,txt \u7c7b\u578b\u7684\u6587\u4ef6\u662f\u7a0b\u5e8f\u4ee3\u7801\uff0c\u5982\u5e94\u7528\u7a0b\u5e8f\u4e8c\u8fdb\u5236\u6587\u4ef6\u672c\u8eab\u6216\u5171\u4eab\u5e93\uff0c\u5982\u4e0a\u5217\u8868\u4e2d\u663e\u793a\u7684 \/sbin\/init \u7a0b\u5e8f\u3002<\/p>\n
\u5176\u6b21\u6570\u503c\u8868\u793a\u5e94\u7528\u7a0b\u5e8f\u7684\u6587\u4ef6\u63cf\u8ff0\u7b26\uff0c\u8fd9\u662f\u6253\u5f00\u8be5\u6587\u4ef6\u65f6\u8fd4\u56de\u7684\u4e00\u4e2a\u6574\u6570\u3002\u5982\u4e0a\u7684\u6700\u540e\u4e00\u884c\u6587\u4ef6\/dev\/initctl\uff0c\u5176\u6587\u4ef6\u63cf\u8ff0\u7b26\u4e3a 10\u3002u \u8868\u793a\u8be5\u6587\u4ef6\u88ab\u6253\u5f00\u5e76\u5904\u4e8e\u8bfb\u53d6\/\u5199\u5165\u6a21\u5f0f\uff0c\u800c\u4e0d\u662f\u53ea\u8bfb \u00ae \u6216\u53ea\u5199 (w) \u6a21\u5f0f\u3002\u540c\u65f6\u8fd8\u6709\u5927\u5199 \u7684W \u8868\u793a\u8be5\u5e94\u7528\u7a0b\u5e8f\u5177\u6709\u5bf9\u6574\u4e2a\u6587\u4ef6\u7684\u5199\u9501\u3002\u8be5\u6587\u4ef6\u63cf\u8ff0\u7b26\u7528\u4e8e\u786e\u4fdd\u6bcf\u6b21\u53ea\u80fd\u6253\u5f00\u4e00\u4e2a\u5e94\u7528\u7a0b\u5e8f\u5b9e\u4f8b\u3002\u521d\u59cb\u6253\u5f00\u6bcf\u4e2a\u5e94\u7528\u7a0b\u5e8f\u65f6\uff0c\u90fd\u5177\u6709\u4e09\u4e2a\u6587\u4ef6\u63cf\u8ff0\u7b26\uff0c\u4ece 0 \u5230 2\uff0c\u5206\u522b\u8868\u793a\u6807\u51c6\u8f93\u5165\u3001\u8f93\u51fa\u548c\u9519\u8bef\u6d41\u3002\u6240\u4ee5\u5927\u591a\u6570\u5e94\u7528\u7a0b\u5e8f\u6240\u6253\u5f00\u7684\u6587\u4ef6\u7684 FD \u90fd\u662f\u4ece 3 \u5f00\u59cb\u3002<\/p>\n
\u4e0e FD \u5217\u76f8\u6bd4\uff0cType \u5217\u5219\u6bd4\u8f83\u76f4\u89c2\u3002\u6587\u4ef6\u548c\u76ee\u5f55\u5206\u522b\u79f0\u4e3a REG \u548c DIR\u3002\u800cCHR \u548c BLK\uff0c\u5206\u522b\u8868\u793a\u5b57\u7b26\u548c\u5757\u8bbe\u5907\uff1b\u6216\u8005 UNIX\u3001FIFO \u548c IPv4\uff0c\u5206\u522b\u8868\u793a UNIX \u57df\u5957\u63a5\u5b57\u3001\u5148\u8fdb\u5148\u51fa (FIFO) \u961f\u5217\u548c\u7f51\u9645\u534f\u8bae (IP) \u5957\u63a5\u5b57\u3002<\/p>\n
 <\/p>\n
\u5e38\u7528\u53c2\u6570<\/strong><\/h1>\n
lsof\u8bed\u6cd5\u683c\u5f0f\u662f\uff1a
\nlsof \uff3boptions\uff3d filename<\/p>\n
\n
lsof abc.txt \u663e\u793a\u5f00\u542f\u6587\u4ef6abc.txt\u7684\u8fdb\u7a0b\r\nlsof -c abc \u663e\u793aabc\u8fdb\u7a0b\u73b0\u5728\u6253\u5f00\u7684\u6587\u4ef6\r\nlsof -c -p 1234 \u5217\u51fa\u8fdb\u7a0b\u53f7\u4e3a1234\u7684\u8fdb\u7a0b\u6240\u6253\u5f00\u7684\u6587\u4ef6\r\nlsof -g gid \u663e\u793a\u5f52\u5c5egid\u7684\u8fdb\u7a0b\u60c5\u51b5\r\nlsof +d \/usr\/local\/ \u663e\u793a\u76ee\u5f55\u4e0b\u88ab\u8fdb\u7a0b\u5f00\u542f\u7684\u6587\u4ef6\r\nlsof +D \/usr\/local\/ \u540c\u4e0a\uff0c\u4f46\u662f\u4f1a\u641c\u7d22\u76ee\u5f55\u4e0b\u7684\u76ee\u5f55\uff0c\u65f6\u95f4\u8f83\u957f\r\nlsof -d 4 \u663e\u793a\u4f7f\u7528fd\u4e3a4\u7684\u8fdb\u7a0b\r\nlsof -i \u7528\u4ee5\u663e\u793a\u7b26\u5408\u6761\u4ef6\u7684\u8fdb\u7a0b\u60c5\u51b5\r\nlsof -i[46] [protocol][@hostname|hostaddr][:service|port]\r\n  46 --> IPv4 or IPv6\r\n  protocol --> TCP or UDP\r\n  hostname --> Internet host name\r\n  hostaddr --> IPv4\u5730\u5740\r\n  service --> \/etc\/service\u4e2d\u7684 service name (\u53ef\u4ee5\u4e0d\u6b62\u4e00\u4e2a)\r\n  port --> \u7aef\u53e3\u53f7 (\u53ef\u4ee5\u4e0d\u6b62\u4e00\u4e2a)<\/pre>\n
<\/div>\n<\/div>\n
 <\/p>\n
lsof\u4f7f\u7528\u5b9e\u4f8b<\/strong><\/h1>\n
\u67e5\u627e\u8c01\u5728\u4f7f\u7528\u6587\u4ef6\u7cfb\u7edf<\/strong>
\n\u5728\u5378\u8f7d\u6587\u4ef6\u7cfb\u7edf\u65f6\uff0c\u5982\u679c\u8be5\u6587\u4ef6\u7cfb\u7edf\u4e2d\u6709\u4efb\u4f55\u6253\u5f00\u7684\u6587\u4ef6\uff0c\u64cd\u4f5c\u901a\u5e38\u5c06\u4f1a\u5931\u8d25\u3002\u90a3\u4e48\u901a\u8fc7lsof\u53ef\u4ee5\u627e\u51fa\u90a3\u4e9b\u8fdb\u7a0b\u5728\u4f7f\u7528\u5f53\u524d\u8981\u5378\u8f7d\u7684\u6587\u4ef6\u7cfb\u7edf\uff0c\u5982\u4e0b\uff1a
\n# lsof \/GTES11\/
\nCOMMAND PID USER FD TYPE DEVICE SIZE NODE NAME
\nbash 4208 root cwd DIR 3,1 4096 2 \/GTES11\/
\nvim 4230 root cwd DIR 3,1 4096 2 \/GTES11\/
\n\u5728\u8fd9\u4e2a\u793a\u4f8b\u4e2d\uff0c\u7528\u6237root\u6b63\u5728\u5176\/GTES11\u76ee\u5f55\u4e2d\u8fdb\u884c\u4e00\u4e9b\u64cd\u4f5c\u3002\u4e00\u4e2a bash\u662f\u5b9e\u4f8b\u6b63\u5728\u8fd0\u884c\uff0c\u5e76\u4e14\u5b83\u5f53\u524d\u7684\u76ee\u5f55\u4e3a\/GTES11\uff0c\u53e6\u4e00\u4e2a\u5219\u663e\u793a\u7684\u662fvim\u6b63\u5728\u7f16\u8f91\/GTES11\u4e0b\u7684\u6587\u4ef6\u3002\u8981\u6210\u529f\u5730\u5378\u8f7d\/GTES11\uff0c\u5e94\u8be5\u5728\u901a\u77e5\u7528\u6237\u4ee5\u786e\u4fdd\u60c5\u51b5\u6b63\u5e38\u4e4b\u540e\uff0c\u4e2d\u6b62\u8fd9\u4e9b\u8fdb\u7a0b\u3002 \u8fd9\u4e2a\u793a\u4f8b\u8bf4\u660e\u4e86\u5e94\u7528\u7a0b\u5e8f\u7684\u5f53\u524d\u5de5\u4f5c\u76ee\u5f55\u975e\u5e38\u91cd\u8981\uff0c\u56e0\u4e3a\u5b83\u4ecd\u4fdd\u6301\u7740\u6587\u4ef6\u8d44\u6e90\uff0c\u5e76\u4e14\u53ef\u4ee5\u9632\u6b62\u6587\u4ef6\u7cfb\u7edf\u88ab\u5378\u8f7d\u3002\u8fd9\u5c31\u662f\u4e3a\u4ec0\u4e48\u5927\u90e8\u5206\u5b88\u62a4\u8fdb\u7a0b\uff08\u540e\u53f0\u8fdb\u7a0b\uff09\u5c06\u5b83\u4eec\u7684\u76ee\u5f55\u66f4\u6539\u4e3a\u6839\u76ee\u5f55\u3001\u6216\u670d\u52a1\u7279\u5b9a\u7684\u76ee\u5f55\uff08\u5982 sendmail \u793a\u4f8b\u4e2d\u7684 \/var\/spool\/mqueue\uff09\u7684\u539f\u56e0\uff0c\u4ee5\u907f\u514d\u8be5\u5b88\u62a4\u8fdb\u7a0b\u963b\u6b62\u5378\u8f7d\u4e0d\u76f8\u5173\u7684\u6587\u4ef6\u7cfb\u7edf\u3002<\/p>\n
 <\/p>\n
\u6062\u590d\u5220\u9664\u7684\u6587\u4ef6<\/strong>
\n\u5f53Linux\u8ba1\u7b97\u673a\u53d7\u5230\u5165\u4fb5\u65f6\uff0c\u5e38\u89c1\u7684\u60c5\u51b5\u662f\u65e5\u5fd7\u6587\u4ef6\u88ab\u5220\u9664\uff0c\u4ee5\u63a9\u76d6\u653b\u51fb\u8005\u7684\u8e2a\u8ff9\u3002\u7ba1\u7406\u9519\u8bef\u4e5f\u53ef\u80fd\u5bfc\u81f4\u610f\u5916\u5220\u9664\u91cd\u8981\u7684\u6587\u4ef6\uff0c\u6bd4\u5982\u5728\u6e05\u7406\u65e7\u65e5\u5fd7\u65f6\uff0c\u610f\u5916\u5730\u5220\u9664\u4e86\u6570\u636e\u5e93\u7684\u6d3b\u52a8\u4e8b\u52a1\u65e5\u5fd7\u3002\u6709\u65f6\u53ef\u4ee5\u901a\u8fc7lsof\u6765\u6062\u590d\u8fd9\u4e9b\u6587\u4ef6\u3002
\n\u5f53\u8fdb\u7a0b\u6253\u5f00\u4e86\u67d0\u4e2a\u6587\u4ef6\u65f6\uff0c\u53ea\u8981\u8be5\u8fdb\u7a0b\u4fdd\u6301\u6253\u5f00\u8be5\u6587\u4ef6\uff0c\u5373\u4f7f\u5c06\u5176\u5220\u9664\uff0c\u5b83\u4f9d\u7136\u5b58\u5728\u4e8e\u78c1\u76d8\u4e2d\u3002\u8fd9\u610f\u5473\u7740\uff0c\u8fdb\u7a0b\u5e76\u4e0d\u77e5\u9053\u6587\u4ef6\u5df2\u7ecf\u88ab\u5220\u9664\uff0c\u5b83\u4ecd\u7136\u53ef\u4ee5\u5411\u6253\u5f00\u8be5\u6587\u4ef6\u65f6\u63d0\u4f9b\u7ed9\u5b83\u7684\u6587\u4ef6\u63cf\u8ff0\u7b26\u8fdb\u884c\u8bfb\u53d6\u548c\u5199\u5165\u3002\u9664\u4e86\u8be5\u8fdb\u7a0b\u4e4b\u5916\uff0c\u8fd9\u4e2a\u6587\u4ef6\u662f\u4e0d\u53ef\u89c1\u7684\uff0c\u56e0\u4e3a\u5df2\u7ecf\u5220\u9664\u4e86\u5176\u76f8\u5e94\u7684\u76ee\u5f55\u7d22\u5f15\u8282\u70b9\u3002
\n\u5728\/proc \u76ee\u5f55\u4e0b\uff0c\u5176\u4e2d\u5305\u542b\u4e86\u53cd\u6620\u5185\u6838\u548c\u8fdb\u7a0b\u6811\u7684\u5404\u79cd\u6587\u4ef6\u3002\/proc\u76ee\u5f55\u6302\u8f7d\u7684\u662f\u5728\u5185\u5b58\u4e2d\u6240\u6620\u5c04\u7684\u4e00\u5757\u533a\u57df\uff0c\u6240\u4ee5\u8fd9\u4e9b\u6587\u4ef6\u548c\u76ee\u5f55\u5e76\u4e0d\u5b58\u5728\u4e8e\u78c1\u76d8\u4e2d\uff0c\u56e0\u6b64\u5f53\u6211\u4eec\u5bf9\u8fd9\u4e9b\u6587\u4ef6\u8fdb\u884c\u8bfb\u53d6\u548c\u5199\u5165\u65f6\uff0c\u5b9e\u9645\u4e0a\u662f\u5728\u4ece\u5185\u5b58\u4e2d\u83b7\u53d6\u76f8\u5173\u4fe1\u606f\u3002\u5927\u591a\u6570\u4e0e lsof \u76f8\u5173\u7684\u4fe1\u606f\u90fd\u5b58\u50a8\u4e8e\u4ee5\u8fdb\u7a0b\u7684 PID \u547d\u540d\u7684\u76ee\u5f55\u4e2d\uff0c\u5373 \/proc\/1234 \u4e2d\u5305\u542b\u7684\u662f PID \u4e3a 1234 \u7684\u8fdb\u7a0b\u7684\u4fe1\u606f\u3002\u6bcf\u4e2a\u8fdb\u7a0b\u76ee\u5f55\u4e2d\u5b58\u5728\u7740\u5404\u79cd\u6587\u4ef6\uff0c\u5b83\u4eec\u53ef\u4ee5\u4f7f\u5f97\u5e94\u7528\u7a0b\u5e8f\u7b80\u5355\u5730\u4e86\u89e3\u8fdb\u7a0b\u7684\u5185\u5b58\u7a7a\u95f4\u3001\u6587\u4ef6\u63cf\u8ff0\u7b26\u5217\u8868\u3001\u6307\u5411\u78c1\u76d8\u4e0a\u7684\u6587\u4ef6\u7684\u7b26\u53f7\u94fe\u63a5\u548c\u5176\u4ed6\u7cfb\u7edf\u4fe1\u606f\u3002lsof \u7a0b\u5e8f\u4f7f\u7528\u8be5\u4fe1\u606f\u548c\u5176\u4ed6\u5173\u4e8e\u5185\u6838\u5185\u90e8\u72b6\u6001\u7684\u4fe1\u606f\u6765\u4ea7\u751f\u5176\u8f93\u51fa\u3002\u6240\u4ee5lsof \u53ef\u4ee5\u663e\u793a\u8fdb\u7a0b\u7684\u6587\u4ef6\u63cf\u8ff0\u7b26\u548c\u76f8\u5173\u7684\u6587\u4ef6\u540d\u7b49\u4fe1\u606f\u3002\u4e5f\u5c31\u662f\u6211\u4eec\u901a\u8fc7\u8bbf\u95ee\u8fdb\u7a0b\u7684\u6587\u4ef6\u63cf\u8ff0\u7b26\u53ef\u4ee5\u627e\u5230\u8be5\u6587\u4ef6\u7684\u76f8\u5173\u4fe1\u606f\u3002
\n\u5f53\u7cfb\u7edf\u4e2d\u7684\u67d0\u4e2a\u6587\u4ef6\u88ab\u610f\u5916\u5730\u5220\u9664\u4e86\uff0c\u53ea\u8981\u8fd9\u4e2a\u65f6\u5019\u7cfb\u7edf\u4e2d\u8fd8\u6709\u8fdb\u7a0b\u6b63\u5728\u8bbf\u95ee\u8be5\u6587\u4ef6\uff0c\u90a3\u4e48\u6211\u4eec\u5c31\u53ef\u4ee5\u901a\u8fc7lsof\u4ece\/proc\u76ee\u5f55\u4e0b\u6062\u590d\u8be5\u6587\u4ef6\u7684\u5185\u5bb9\u3002 \u5047\u5982\u7531\u4e8e\u8bef\u64cd\u4f5c\u5c06\/var\/log\/messages\u6587\u4ef6\u5220\u9664\u6389\u4e86\uff0c\u90a3\u4e48\u8fd9\u65f6\u8981\u5c06\/var\/log\/messages\u6587\u4ef6\u6062\u590d\u7684\u65b9\u6cd5\u5982\u4e0b\uff1a
\n\u9996\u5148\u4f7f\u7528lsof\u6765\u67e5\u770b\u5f53\u524d\u662f\u5426\u6709\u8fdb\u7a0b\u6253\u5f00\/var\/logmessages\u6587\u4ef6\uff0c\u5982\u4e0b\uff1a
\n# lsof |grep \/var\/log\/messages
\nsyslogd 1283 root 2w REG 3,3 5381017 1773647 \/var\/log\/messages (deleted)
\n\u4ece\u4e0a\u9762\u7684\u4fe1\u606f\u53ef\u4ee5\u770b\u5230 PID 1283\uff08syslogd\uff09\u6253\u5f00\u6587\u4ef6\u7684\u6587\u4ef6\u63cf\u8ff0\u7b26\u4e3a 2\u3002\u540c\u65f6\u8fd8\u53ef\u4ee5\u770b\u5230\/var\/log\/messages\u5df2\u7ecf\u6807\u8bb0\u88ab\u5220\u9664\u4e86\u3002\u56e0\u6b64\u6211\u4eec\u53ef\u4ee5\u5728 \/proc\/1283\/fd\/2 \uff08fd\u4e0b\u7684\u6bcf\u4e2a\u4ee5\u6570\u5b57\u547d\u540d\u7684\u6587\u4ef6\u8868\u793a\u8fdb\u7a0b\u5bf9\u5e94\u7684\u6587\u4ef6\u63cf\u8ff0\u7b26\uff09\u4e2d\u67e5\u770b\u76f8\u5e94\u7684\u4fe1\u606f\uff0c\u5982\u4e0b\uff1a
\n# head -n 10 \/proc\/1283\/fd\/2
\nAug 4 13:50:15 holmes86 syslogd 1.4.1: restart.
\nAug 4 13:50:15 holmes86 kernel: klogd 1.4.1, log source = \/proc\/kmsg started.
\nAug 4 13:50:15 holmes86 kernel: Linux version 2.6.22.1-8 (root@everestbuilder.linux-ren.org) (gcc version 4.2.0) #1 SMP Wed Jul 18 11:18:32 EDT 2007 Aug 4 13:50:15 holmes86 kernel: BIOS-provided physical RAM map: Aug 4 13:50:15 holmes86 kernel: BIOS-e820: 0000000000000000 – 000000000009f000 (usable) Aug 4 13:50:15 holmes86 kernel: BIOS-e820: 000000000009f000 – 00000000000a0000 (reserved) Aug 4 13:50:15 holmes86 kernel: BIOS-e820: 0000000000100000 – 000000001f7d3800 (usable) Aug 4 13:50:15 holmes86 kernel: BIOS-e820: 000000001f7d3800 – 0000000020000000 (reserved) Aug 4 13:50:15 holmes86 kernel: BIOS-e820: 00000000e0000000 – 00000000f0007000 (reserved) Aug 4 13:50:15 holmes86 kernel: BIOS-e820: 00000000f0008000 – 00000000f000c000 (reserved)
\n\u4ece\u4e0a\u9762\u7684\u4fe1\u606f\u53ef\u4ee5\u770b\u51fa\uff0c\u67e5\u770b \/proc\/8663\/fd\/15 \u5c31\u53ef\u4ee5\u5f97\u5230\u6240\u8981\u6062\u590d\u7684\u6570\u636e\u3002\u5982\u679c\u53ef\u4ee5\u901a\u8fc7\u6587\u4ef6\u63cf\u8ff0\u7b26\u67e5\u770b\u76f8\u5e94\u7684\u6570\u636e\uff0c\u90a3\u4e48\u5c31\u53ef\u4ee5\u4f7f\u7528 I\/O \u91cd\u5b9a\u5411\u5c06\u5176\u590d\u5236\u5230\u6587\u4ef6\u4e2d\uff0c\u5982:
\ncat \/proc\/1283\/fd\/2 > \/var\/log\/messages
\n\u5bf9\u4e8e\u8bb8\u591a\u5e94\u7528\u7a0b\u5e8f\uff0c\u5c24\u5176\u662f\u65e5\u5fd7\u6587\u4ef6\u548c\u6570\u636e\u5e93\uff0c\u8fd9\u79cd\u6062\u590d\u5220\u9664\u6587\u4ef6\u7684\u65b9\u6cd5\u975e\u5e38\u6709\u7528\u3002<\/p>\n
 <\/p>\n
\u5b9e\u7528\u547d\u4ee4<\/strong><\/p>\n
\n
lsof `which httpd` \/\/\u90a3\u4e2a\u8fdb\u7a0b\u5728\u4f7f\u7528apache\u7684\u53ef\u6267\u884c\u6587\u4ef6\r\nlsof \/etc\/passwd \/\/\u90a3\u4e2a\u8fdb\u7a0b\u5728\u5360\u7528\/etc\/passwd\r\nlsof \/dev\/hda6 \/\/\u90a3\u4e2a\u8fdb\u7a0b\u5728\u5360\u7528hda6\r\nlsof \/dev\/cdrom \/\/\u90a3\u4e2a\u8fdb\u7a0b\u5728\u5360\u7528\u5149\u9a71\r\nlsof -c sendmail \/\/\u67e5\u770bsendmail\u8fdb\u7a0b\u7684\u6587\u4ef6\u4f7f\u7528\u60c5\u51b5\r\nlsof -c courier -u ^zahn \/\/\u663e\u793a\u51fa\u90a3\u4e9b\u6587\u4ef6\u88ab\u4ee5courier\u6253\u5934\u7684\u8fdb\u7a0b\u6253\u5f00\uff0c\u4f46\u662f\u5e76\u4e0d\u5c5e\u4e8e\u7528\u6237zahn\r\nlsof -p 30297 \/\/\u663e\u793a\u90a3\u4e9b\u6587\u4ef6\u88abpid\u4e3a30297\u7684\u8fdb\u7a0b\u6253\u5f00\r\nlsof -D \/tmp \u663e\u793a\u6240\u6709\u5728\/tmp\u6587\u4ef6\u5939\u4e2d\u6253\u5f00\u7684instance\u548c\u6587\u4ef6\u7684\u8fdb\u7a0b\u3002\u4f46\u662fsymbol\u6587\u4ef6\u5e76\u4e0d\u5728\u5217\r\n\r\nlsof -u1000 \/\/\u67e5\u770buid\u662f100\u7684\u7528\u6237\u7684\u8fdb\u7a0b\u7684\u6587\u4ef6\u4f7f\u7528\u60c5\u51b5\r\nlsof -utony \/\/\u67e5\u770b\u7528\u6237tony\u7684\u8fdb\u7a0b\u7684\u6587\u4ef6\u4f7f\u7528\u60c5\u51b5\r\nlsof -u^tony \/\/\u67e5\u770b\u4e0d\u662f\u7528\u6237tony\u7684\u8fdb\u7a0b\u7684\u6587\u4ef6\u4f7f\u7528\u60c5\u51b5(^\u662f\u53d6\u53cd\u7684\u610f\u601d)\r\nlsof -i \/\/\u663e\u793a\u6240\u6709\u6253\u5f00\u7684\u7aef\u53e3\r\nlsof -i:80 \/\/\u663e\u793a\u6240\u6709\u6253\u5f0080\u7aef\u53e3\u7684\u8fdb\u7a0b\r\nlsof -i -U \/\/\u663e\u793a\u6240\u6709\u6253\u5f00\u7684\u7aef\u53e3\u548cUNIX domain\u6587\u4ef6\r\nlsof -i UDP@[url]www.akadia.com:123 \/\/\u663e\u793a\u90a3\u4e9b\u8fdb\u7a0b\u6253\u5f00\u4e86\u5230www.akadia.com\u7684UDP\u7684123(ntp)\u7aef\u53e3\u7684\u94fe\u63a5\r\nlsof -i tcp@ohaha.ks.edu.tw:ftp -r \/\/\u4e0d\u65ad\u67e5\u770b\u76ee\u524dftp\u8fde\u63a5\u7684\u60c5\u51b5(-r\uff0clsof\u4f1a\u6c38\u8fdc\u4e0d\u65ad\u7684\u6267\u884c\uff0c\u76f4\u5230\u6536\u5230\u4e2d\u65ad\u4fe1\u53f7,+r\uff0clsof\u4f1a\u4e00\u76f4\u6267\u884c\uff0c\u76f4\u5230\u6ca1\u6709\u6863\u6848\u88ab\u663e\u793a,\u7f3a\u7701\u662f15s\u5237\u65b0)\r\nlsof -i tcp@ohaha.ks.edu.tw:ftp -n \/\/lsof -n \u4e0d\u5c06IP\u8f6c\u6362\u4e3ahostname\uff0c\u7f3a\u7701\u662f\u4e0d\u52a0\u4e0a-n\u53c2\u6570<\/pre>\n<\/div>\n","protected":false},"excerpt":{"rendered":"
\u7b80\u4ecb lsof(list open files)\u662f\u4e00\u4e2a\u5217\u51fa\u5f53\u524d\u7cfb\u7edf\u6253\u5f00\u6587\u4ef6\u7684\u5de5\u5177\u3002\u5728linux\u73af\u5883\u4e0b\uff0c\u4efb\u4f55\u4e8b\u7269 […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":[],"categories":[31],"tags":[32,339,341],"_links":{"self":[{"href":"https:\/\/yanjingang.com\/blog\/index.php?rest_route=\/wp\/v2\/posts\/671"}],"collection":[{"href":"https:\/\/yanjingang.com\/blog\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/yanjingang.com\/blog\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/yanjingang.com\/blog\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/yanjingang.com\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=671"}],"version-history":[{"count":0,"href":"https:\/\/yanjingang.com\/blog\/index.php?rest_route=\/wp\/v2\/posts\/671\/revisions"}],"wp:attachment":[{"href":"https:\/\/yanjingang.com\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=671"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/yanjingang.com\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=671"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/yanjingang.com\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=671"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}