Linux ps命令


Linux ps命令用于显示当前进程 (process) 的状态。

语法

ps [options] [--help]

参数

实例

# ps -A 显示进程信息
PID TTY     TIME CMD
  1 ?    00:00:02 init
  2 ?    00:00:00 kthreadd
  3 ?    00:00:00 migration/0
  4 ?    00:00:00 ksoftirqd/0
  5 ?    00:00:00 watchdog/0
  6 ?    00:00:00 events/0
  7 ?    00:00:00 cpuset
  8 ?    00:00:00 khelper
  9 ?    00:00:00 netns
  10 ?    00:00:00 async/mgr
  11 ?    00:00:00 pm
  12 ?    00:00:00 sync_supers
  13 ?    00:00:00 bdi-default
  14 ?    00:00:00 kintegrityd/0
  15 ?    00:00:02 kblockd/0
  16 ?    00:00:00 kacpid
  17 ?    00:00:00 kacpi_notify
  18 ?    00:00:00 kacpi_hotplug
  19 ?    00:00:27 ata/0
……省略部分结果
30749 pts/0  00:00:15 gedit
30886 ?    00:01:10 qtcreator.bin
30894 ?    00:00:00 qtcreator.bin 
31160 ?    00:00:00 dhclient
31211 ?    00:00:00 aptd
31302 ?    00:00:00 sshd
31374 pts/2  00:00:00 bash
31396 pts/2  00:00:00 ps

显示指定用户信息

# ps -u root //显示root进程用户信息
 PID TTY     TIME CMD
  1 ?    00:00:02 init
  2 ?    00:00:00 kthreadd
  3 ?    00:00:00 migration/0
  4 ?    00:00:00 ksoftirqd/0
  5 ?    00:00:00 watchdog/0
  6 ?    00:00:00 events/0
  7 ?    00:00:00 cpuset
  8 ?    00:00:00 khelper
  9 ?    00:00:00 netns
  10 ?    00:00:00 async/mgr
  11 ?    00:00:00 pm
  12 ?    00:00:00 sync_supers
  13 ?    00:00:00 bdi-default
  14 ?    00:00:00 kintegrityd/0
  15 ?    00:00:02 kblockd/0
  16 ?    00:00:00 kacpid
……省略部分结果
30487 ?    00:00:06 gnome-terminal
30488 ?    00:00:00 gnome-pty-helpe
30489 pts/0  00:00:00 bash
30670 ?    00:00:00 debconf-communi 
30749 pts/0  00:00:15 gedit
30886 ?    00:01:10 qtcreator.bin
30894 ?    00:00:00 qtcreator.bin 
31160 ?    00:00:00 dhclient
31211 ?    00:00:00 aptd
31302 ?    00:00:00 sshd
31374 pts/2  00:00:00 bash
31397 pts/2  00:00:00 ps

显示所有进程信息,连同命令行

# ps -ef //显示所有命令,连带命令行
UID    PID PPID C STIME TTY     TIME CMD
root     1   0 0 10:22 ?    00:00:02 /sbin/init
root     2   0 0 10:22 ?    00:00:00 [kthreadd]
root     3   2 0 10:22 ?    00:00:00 [migration/0]
root     4   2 0 10:22 ?    00:00:00 [ksoftirqd/0]
root     5   2 0 10:22 ?    00:00:00 [watchdog/0]
root     6   2 0 10:22 ?    /usr/lib/NetworkManager
……省略部分结果
root   31302 2095 0 17:42 ?    00:00:00 sshd: root@pts/2 
root   31374 31302 0 17:42 pts/2  00:00:00 -bash
root   31400   1 0 17:46 ?    00:00:00 /usr/bin/python /usr/sbin/aptd
root   31407 31374 0 17:48 pts/2  00:00:00 ps -ef