shell的ps命令参数列表解释说明

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, --pid <pid>      process id
--ppid <pid>     select by parent process id
-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

selection <arguments> take either:
comma-separated list e.g. '-u root,nobody' or
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 rrs 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 where 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                   list 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).