Centos linux系统查看进程ps命令的用法

[root@VM-0-15-centos ~]# ps --help

Usage:

 ps [options]

 Try 'ps --help <simple|list|output|threads|misc|all>'

  or 'ps --help <s|l|o|t|m|a>'

 for additional help text.

For more details see ps(1).

[root@VM-0-15-centos ~]# ps --help all

Usage:

 ps [options]

Basic options:

 -A, -e               all processes

 -a                   all with tty, except session leaders

  a                   all with tty, including other users

 -d                   all except session leaders

 -N, --deselect       negate selection

  r                   only running processes

  T                   all processes on this terminal

  x                   processes without controlling ttys

Selection by list:

 -C <command>         command name

 -G, --Group <GID>    real group id or name

 -g, --group <group>  session or effective group name

 -p, p, --pid <PID>   process id

        --ppid <PID>  parent process id

 -q, q, --quick-pid <PID>

                      process id (quick mode)

 -s, --sid <session>  session id

 -t, t, --tty <tty>   terminal

 -u, U, --user <UID>  effective user id or name

 -U, --User <UID>     real user id or name

  The selection options take as their argument either:

    a comma-separated list e.g. '-u root,nobody' or

    a blank-separated list e.g. '-p 123 4567'

Output formats:

 -F                   extra full

 -f                   full-format, including command lines

  f, --forest         ascii art process tree

 -H                   show process hierarchy

 -j                   jobs format

  j                   BSD job control format

 -l                   long format

  l                   BSD long format

 -M, Z                add security data (for SELinux)

 -O <format>          preloaded with default columns

  O <format>          as -O, with BSD personality

 -o, o, --format <format>

                      user-defined format

  s                   signal format

  u                   user-oriented format

  v                   virtual memory format

  X                   register format

 -y                   do not show flags, show rss vs. addr (used with -l)

     --context        display security context (for SELinux)

     --headers        repeat header lines, one per page

     --no-headers     do not print header at all

     --cols, --columns, --width <num>

                      set screen width

     --rows, --lines <num>

                      set screen height

Show threads:

  H                   as if they were processes

 -L                   possibly with LWP and NLWP columns

 -m, m                after processes

 -T                   possibly with SPID column

Miscellaneous options:

 -c                   show scheduling class with -l option

  c                   show true command name

  e                   show the environment after command

  k,    --sort        specify sort order as: [+|-]key[,[+|-]key[,...]]

  L                   show format specifiers

  n                   display numeric uid and wchan

  S,    --cumulative  include some dead child process data

 -y                   do not show flags, show rss (only with -l)

 -V, V, --version     display version information and exit

 -w, w                unlimited output width

        --help <simple|list|output|threads|misc|all>

                      display help and exit

For more details see ps(1).