Type the ps command, using the traditional BSD-style options and no leading dash, that lists every process on the system in the user-oriented format including processes without a controlling terminal.
LPIC-1 Exam 101-500, objective 103. GNU and Unix commands medium
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Answer
Type the answer.
Accepted answers
ps auxps axups uaxps uxaps xaups xua
Case sensitive — Linux is, and grading LS as ls would teach a falsehood.
Why
In BSD syntax a selects processes of all users, x includes those with no controlling terminal, and u chooses the user-oriented output format with the USER, %CPU and %MEM columns. The UNIX-style equivalent for a full listing of everything is `ps -ef`. Note that ps accepts BSD options without a dash — writing `-aux` means something subtly different historically.
Where this comes from
- Cited
- LPI exam objective 103.5
- What it says
- List running processes with ps.
Practise this
Reading one question is not practice. The trainer will draw a short set from objective 103 and space the ones you get wrong.
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