Ksh Script Help

sharathkv25 · 02-01-2007, 11:16 PM

Hi,

I would like to do this in a shell script.

ps -ef | grep "java TPCISDae" | grep -v grep

How do I do this?

This is not working.

Code:

mstat=`ps -ef | grep "java TPICSDae" | grep -v grep`

chrism01 · 02-02-2007, 01:29 AM

looks ok to me, what error are you getting?

unSpawn · 02-02-2007, 05:19 AM

If you are only looking for PID's (provided pgrep is available) a shorter form could be "mstat=`pgrep -f "java.*TPICSDae"`".

bigearsbilly · 02-02-2007, 07:28 AM

I do it like this:

Code:

mstat=`ps -ef | grep "[j]ava TPICSDae"

bigearsbilly · 02-02-2007, 07:42 AM

something to watch out for - pgrep is not very good on solaris
dunno what you run on...

i.e. it has unexpected behaviour on a long command name,
observe:

Code:

billy$ cp /usr/bin/sleep ./very_long_command_name

billy$very_long_command_name 200 &
[2]     3103
billy$very_long_command_name 200 &
[3]     3104

billy$ pgrep very_long_command_name      
billy$ pgrep very_                 
3104
3103

it fails to pick it up if you use the full name,

unSpawn · 02-02-2007, 07:43 AM

Good call, case.
Still 'pgrep' is more efficient, two tasks combined into one binary,: pgrep -f "[j]?ava.*TPICSDae".

unSpawn · 02-02-2007, 07:51 AM

pgrep is not very good on solaris
Nice to know but I didn't seen no --with-explicit-compat flag in the OP's questions.
Since we *are* at LQ I assert --with-compat="GNU/Linux" unless stated otherwise.

it has unexpected behaviour on a long command name
What if you match with "pgrep -f "anchor.*anchor"" where anchor obviously are parts of very_long_command_name's argv[whatever]?

bigearsbilly · 02-02-2007, 08:07 AM

granted, but i thought i'd mention it as it caught me out badly a few months ago at work.
and as the OP is talking ksh I thought perhaps he's on a unix.

ahem!

Quote:

This forum is for all programming questions.
The question does not have to be directly related to Linux and any language is fair game.

unSpawn · 02-02-2007, 09:43 AM

as the OP is talking ksh I thought perhaps he's on a unix
Seems we : ${things:="GNU/Linux"} differently, oh well. If the OP got what he needs then all is OK.

Quote:

ahem!

Quote:

This forum is for all programming questions. The question does not have to be directly related to Linux and any language is fair game.

Anyway, I quote your quote and raise you ten ;-p

bigearsbilly · 02-02-2007, 09:51 AM

so we can assume we are both a bit bored at work

unSpawn · 02-02-2007, 10:28 AM

Maybe you can, I can not.