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Linux系统lsof命令使用实例汇总

更新时间:2026-08-22 02:27:49 | 编辑:小瓶盖 | 信息来源:互联网

  Linux系统中,lsof命令可用于查找应用程序打开的文件名称和数量,除此之外,losf命令还有很多用法,下面系统之家的小编就给大家介绍下Linux中lsof命令的用法实例,一起来看看吧。

  lsof(list open files)是一个列出当前系统打开文件的工具。在linux环境下,任何事物都以文件的形式存在,通过文件不仅仅可以访问常规数据,还可以访问网络连接和硬件,所以如传输控制协议 (TCP) 和用户数据报协议 (UDP) 套接字等,系统在后台都为该应用程序分配了一个文件描述符,无论这个文件的本质如何,该文件描述符为应用程序与基础操作系统之间的交互提供了通用接口。因为应用程序打开文件的描述符列表提供了大量关于这个应用程序本身的信息,因此通过lsof工具能够查看这个列表对系统监测以及排错将是很有帮助的。

  1.命令格式:

  lsof [参数][文件]

  2.命令功能:

  用于查看你进程开打的文件,打开文件的进程,进程打开的端口(TCP、UDP)。找回/恢复删除的文件。是十分方便的系统监视工具,因为 lsof 需要访问核心内存和各种文件,所以需要root用户执行。

  lsof打开的文件可以是:

  1.普通文件

  2.目录

  3.网络文件系统的文件

  4.字符或设备文件

  5.(函数)共享库

  6.管道,命名管道

  7.符号链接

  8.网络文件(例如:NFS file、网络socket,unix域名socket)

  9.还有其它类型的文件,等等

  3.命令参数:

  -a 列出打开文件存在的进程

  -c《进程名》 列出指定进程所打开的文件

  -g 列出GID号进程详情

  -d《文件号》 列出占用该文件号的进程

  +d《目录》 列出目录下被打开的文件

  +D《目录》 递归列出目录下被打开的文件

  -n《目录》 列出使用NFS的文件

  -i《条件》 列出符合条件的进程。(4、6、协议、:端口、 @ip )

  -p《进程号》 列出指定进程号所打开的文件

  -u 列出UID号进程详情

  -h 显示帮助信息

  -v 显示版本信息

  4.使用实例:

  实例1:无任何参数

  命令:lsof

  输出:

  代码如下:

  [root@localhost ~]# lsof《/p》 《p》COMMAND PID USER FD TYPE DEVICE SIZE NODE NAME

  init 1 root cwd DIR 8,2 4096 2 /

  init 1 root rtd DIR 8,2 4096 2 /

  init 1 root txt REG 8,2 43496 6121706 /sbin/init

  init 1 root mem REG 8,2 143600 7823908 /lib64/ld-2.5.so

  init 1 root mem REG 8,2 1722304 7823915 /lib64/libc-2.5.so

  init 1 root mem REG 8,2 23360 7823919 /lib64/libdl-2.5.so

  init 1 root mem REG 8,2 95464 7824116 /lib64/libselinux.so.1

  init 1 root mem REG 8,2 247496 7823947 /lib64/libsepol.so.1

  init 1 root 10u FIFO 0,17 1233 /dev/initctl

  migration 2 root cwd DIR 8,2 4096 2 /

  migration 2 root rtd DIR 8,2 4096 2 /

  migration 2 root txt unknown /proc/2/exe

  ksoftirqd 3 root cwd DIR 8,2 4096 2 /

  ksoftirqd 3 root rtd DIR 8,2 4096 2 /

  ksoftirqd 3 root txt unknown /proc/3/exe

  migration 4 root cwd DIR 8,2 4096 2 /

  migration 4 root rtd DIR 8,2 4096 2 /

  migration 4 root txt unknown /proc/4/exe

  ksoftirqd 5 root cwd DIR 8,2 4096 2 /

  ksoftirqd 5 root rtd DIR 8,2 4096 2 /

  ksoftirqd 5 root txt unknown /proc/5/exe

  events/0 6 root cwd DIR 8,2 4096 2 /

  events/0 6 root rtd DIR 8,2 4096 2 /

  events/0 6 root txt unknown /proc/6/exe

  events/1 7 root cwd DIR 8,2 4096 2 /

  说明:

  lsof输出各列信息的意义如下:

  COMMAND:进程的名称

  PID:进程标识符

  PPID:父进程标识符(需要指定-R参数)

  USER:进程所有者

  PGID:进程所属组

  FD:文件描述符,应用程序通过文件描述符识别该文件。如cwd、txt等


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  2. 视图: /www/wwwroot/www.pjwan.com/view/ww7/xt_show.htm
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  4. 日志目录: /www/wwwroot/www.pjwan.com/log/
  5. 当前页面: /www/wwwroot/www.pjwan.com/index.php
  6. 当前时间: 2026-08-22 02:27:48
  7. 当前网协: 216.73.217.43
  8. 请求路径: /anzhuang/31483.html
  9. 运行时间: 1.3174
  10. 内存开销: 1.33 MB
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