Linux – How to get only the user, the pid and the command run for a specific process? (Ubuntu 11.10)

bashlinuxps

When I do ps -ef|grep python I get the following:

myusername  4492  2994  0 10:32 pts/0    00:00:01 /home/myusername/.virtualenvs/myproject/bin/ipython manage.py runserver
root        6665     1  0 10:42 ?        00:00:00 /usr/bin/python /usr/lib/system-service/system-service-d
myusername 14051 13497  0 11:28 pts/7    00:00:00 grep --color=auto python

How do I get only the user who is running the process, the pid and the command run for the process as in the following output instead? 

myusername  4492 /home/myusername/.virtualenvs/myproject/bin/ipython manage.py runserver
root        6665 /usr/bin/python /usr/lib/system-service/system-service-d

Best Answer

I guess you are looking for the -o argument:

-o format:

user-defined format. format is a single argument in the form of a blank-separated or comma-separated list, which offers a way to specify individual output columns. The recognized keywords are described in the STANDARD FORMAT SPECIFIERS section below. Headers may be renamed (ps -o pid,ruser=RealUser -o comm=Command) as desired. If all column headers are empty (ps -o pid= -o comm=) then the header line will not be output. Column width will increase as needed for wide headers; this may be used to widen up columns such as WCHAN (ps -o pid,wchan=WIDE-WCHAN-COLUMN -o comm). Explicit width control (ps opid,wchan:42,cmd) is offered too. The behavior of ps -o pid=X,comm=Y varies with personality; output may be one column named "X,comm=Y" or two columns named "X" and "Y". Use multiple -o options when in doubt. Use the PS_FORMAT environment variable to specify a default as desired; DefSysV and DefBSD are macros that may be used to choose the default UNIX or BSD columns.

So the command you want would be (Ubuntu):

ps -o uid,pid,cmd -ef|grep python

under OpenSolaris the command is:

ps -o ruser,pid,comm -ef|grep python
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