ps是显示瞬间进程的状态，并不动态连续；如果想对进程进行实时监控应该用top命令。

This version of ps accepts several kinds of options:PS接受以下3中类型的语法风格

1 UNIX options, which may be grouped and must be preceded by a dash.必须以-开头

2 BSD options, which may be grouped and must not be used with a dash.必须不能以-开头

3 GNU long options, which are preceded by two dashes.必须以两个-开头

ps aux = ps auxg = ps –e u

ps --help

simple selection

-A all processes 、-e all processes 显示所有进程信息

-a all w/ tty except session leaders显示所有TTY值存在的进程，除去bash和TTY终端等进程

a all w/ tty, including other users 显示所有TTY值存在的进程，包括其他用户的

查看当前bash pid

[root@node0 tmp]# echo $$

26873

-d all except session leaders 所有进程除去bash或TTY等

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selection by list

根据某个属性的值对进程进行筛选

-C by command name 命令

-G by real group ID (supports names)

-U by real user ID (supports names)

-g by session OR by effective group name

-p by process ID 筛选进程pid

-q by process ID (unsorted & quick)

-s processes in the sessions given 按照session id筛选

-u by effective user ID (supports names)

U processes for specified users

-t by ttyt 、by tty 筛选终端

h 隐藏表格头

output format 格式化输出

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-j,j job control 作业控制

显示PPID PID PGID SID等信息

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-f full 长格式输出信息，显示更详细的信息

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-l,l long 长格式输出信息，显示更详细的信息

long options

misc options，混合选项

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L list format codes 列出所有可选属性

-V,V show version 查看版本信息

Linux性能监控-ps

原文：https://www.cnblogs.com/jeancheng/p/13051415.html