Linux Basics-Process Management related commands (1)

This paper mainly introduces the related commands of process management in Linux, and the main commands involved are pstree,ps.

(1) Pstree

① function: Used to view the process tree

② use case:

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(2) PS

① function: command to display the status of the system's current process

② use case:

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③ Related uses:

1. PS A: Show all processes associated with the terminal

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2. PS x: Show all terminal-independent processes

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   Related comments:

     Stat code meaning:

      s: interruptible sleep State

      D: Non-interruptible sleep state

      r: Run or run

      t: Stop

      z: Zombie

      s:session leader

      L: Multithreaded process

      +: Foreground process

      N: Low priority process

     &NBSP;<: high-priority process

   Time: Run time

   Command: Which command initiated the process With [] indicates kernel process

3. PS u: User-centric display of process-related information
   

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Related notes:

%cpu:cputime/realtime

%mem:memory/realmemory

Vsz:virtual Memory size (linear address space size)

RSS: Non-exchangeable physical memory space, resident memory set

4. Related options:

-e: Show All Processes

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-F: Full format list

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-EF:

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-F: Show additional information

-H: Show process hierarchy relationship

-EFH:

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-O: Custom display format, for example: Ps-o Pid,command

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This article is from the "xlows" blog, make sure to keep this source http://xlows.blog.51cto.com/5380484/1433306