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Full Discussion: Script to see if a process is running or not
Top Forums Shell Programming and Scripting Script to see if a process is running or not Post 302478716 by rwuerth on Wednesday 8th of December 2010 05:20:12 PM
Old 12-08-2010
In this case, since the actual process name is hidden in a variable, I'd go with adding a second pipe to your statement like so:

Code:
 
pe -ef | grep -q $process | grep -v grep

The -v option tells grep to ignore results, therefore you're telling it to ignore "grep" processes.

Or ... you could do this (ksh - don't know what shell you've got) :

Code:
 
if (( $(ps -ef | grep -c $process) > 1 ))

This accounts for the fact that you'll always get the "grep" process. But if you ever don't get it for whatever reason, you'll get a false miss. I don't like relying on this.

I've seen some folks when displaying actual process names and not putting the name in a variable do this:

Code:
 
ps -ef | grep [m]yprocess

The bracket expression somehow precludes the grep process from showing up in the reults. As I say "somehow" means I don't understand why it works, and until I do, I don't trust it. ;-)
This User Gave Thanks to rwuerth For This Post:
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LEARN ABOUT SUNOS

script

script(1)							   User Commands							 script(1)

NAME

       script - make record of a terminal session

SYNOPSIS

       script [-a] [filename]

DESCRIPTION

       The  script  utility  makes a record of everything printed on your screen. The record is written to filename. If no file name is given, the
       record is saved in the file typescript. See WARNINGS.

       The script command forks and creates a sub-shell, according to the value of $SHELL, and records the text from this session. The script ends
       when the forked shell exits or when Control-d is typed.

OPTIONS

       The following option is supported:

       -a	Appends the session record to filename, rather than overwriting it.

NOTES

       script places everything that appears on the screen in filename, including prompts.

ATTRIBUTES

       See attributes(5) for descriptions of the following attributes:

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE	     |	    ATTRIBUTE VALUE	   |
       +-----------------------------+-----------------------------+
       |Availability		     |SUNWcsu			   |
       +-----------------------------+-----------------------------+
       |CSI			     |Enabled			   |
       +-----------------------------+-----------------------------+

SEE ALSO

       attributes(5)

WARNINGS

       script  can  pose  a  security risk when used in directories that are writable by other users (for example, /tmp), especially when run by a
       privileged user, that is, root. Be sure that typescript is not a link before running script.

SunOS 5.10							    30 Jan 2004 							 script(1)
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