How to find the exact process using ps aux command?

Shell Programming and Scripting
1

Hello Everyone,

Please help me on this,

Requirement here is to check whether the process is running using the process id.

For the below scenario, I m trying to grep 1750 process id to check if this is active or not using the below command.

$ ps aux | grep -v grep | grep 1750
cafesys  1750  0.0  0.0 109540  1880 pts/8    S+   Dec22   0:00 -ksh
rpcuser  31750  0.0  0.0  23352   720 ?        Ss   Oct17   0:00 rpc.statd
root     17504  1.9  0.0 180580 13748 ?        S<l  Nov01 1594:15 /opt/perf/bin/perfd

$

I want only the process running withe user "cafesys" to show up on my output.
others needs to be ignored. Please help me with the command on unix

2

If you read the manual page for ps you should see the various flags, e.g. -u for user.

I would suggest something like this:-

ps -fu cafesys

if you need to get a specific process name, you might be better with pgrep if you have it or perhaps a trick using metacharacters like this:

ps -fu cafesys | egrep ks[h]

The search string ks[h] is the literal characters ks followed by any character within the square brackets. That means that your own grep process will not be selected.

Do either of these help?

Robin

3

Does this fly?

ps -ef |grep $1 | grep -v grep

If you want to hard code a specific process, substitute it for "$1".

4

egrep ks[h] lets the shell try to substitute it by matching files.
Say you are in the /bin directory, then the shell will find ksh and substitute egrep ksh , and the egrep might find itself in the process table.
Correct is

ps -fu cafesys | grep -w "ks[h]"

--
Some OS have pgrep that gives the pid only

pgrep -xu cafesys "\-?ksh"