UNIX for Dummies Questions & Answers

Hi All,


Could you please help to resolve my following issues:

Problem Description:

Suppose my user name is "MI90".
i.e. $USER = MI90

when i run below command, i get all the processes running on the system containing name MQ.

ps -ef | grep MQ

But sometimes it lists "grep MQ" cmd also in its output, which is nothing but the above cmd which i executed to check all the running processes of system.
& sometimes not.

NEED:

My need is that it should always avoid listing "grep MQ", which has been started just now by the current user i.e. MI90

Examples:

when i run $ ps -ef | gre MQ

i got :

MI90 36241614 36110452 0 05:41:31 pts/2 0:00 grep MQ
tibco 38535330 1 0 02:05:18 - 0:11 /appl/tibco/adapter/admqs/6 .2/bin/admqs --pid --run --propFile /appl/tibco/tra/domain/PR/application/MQAdap ter/MQAdapter-ABNAMROMQAdapter.tra --innerProcess
tibco 38797444 1 1 02:05:18 - 0:11 /appl/tibco/adapter/admqs/6 .2/bin/admqs --pid --run --propFile /appl/tibco/tra/domain/PR/application/MQAdap terNew/MQAdapterNew-ABNAMROMQAdapterNew.tra --innerProcess


but i always need only below:

tibco 38535330 1 0 02:05:18 - 0:11 /appl/tibco/adapter/admqs/6 .2/bin/admqs --pid --run --propFile /appl/tibco/tra/domain/PR/application/MQAdap ter/MQAdapter-ABNAMROMQAdapter.tra --innerProcess
tibco 38797444 1 1 02:05:18 - 0:11 /appl/tibco/adapter/admqs/6 .2/bin/admqs --pid --run --propFile /appl/tibco/tra/domain/PR/application/MQAdap terNew/MQAdapterNew-ABNAMROMQAdapterNew.tra --innerProcess


So please help me in getting such o/p....

Thanks in advance!
Regards,
KD

Code:

ps -ef | grep MQ | grep -v grep

From grep manual page:

Code:

-v   All lines but those matching are printed.

Hi Bipin,

Thanks a lot, it exactly solved my problem.
once again thank you

Regards,
KD

Try

Code:

ps -ef | grep [M]Q

Hi Rudic,

Please let me know what does [M] implies.
how does it filter?

It does not filter at all, but modifies the command line of the grep command so the pattern grep searches for will not be matched. "[...]" is a regex matching exactly one char from the set supplied. In your case, there's only "M" to match, which is used by grep.

An attempt to shed more light on why RudiC's method is preferred.

Less overhead as a pipeline does not need to be created. grep is only called once.

The pattern [M]Q matches a string starting with a capital M followed by a Q. It does not match itself (as would be shown in a ps -ef) as the grep pattern starts with a '[', not an M.