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Top Forums UNIX for Dummies Questions & Answers ps l Post 32190 by criglerj on Wednesday 20th of November 2002 08:57:03 AM

11-20-2002

Registered User

Save a process

Quote:

Originally posted by mphartley
When I kick off a script I then need to check whether or not it is running (in another sesssion) by another script.

ps -fu$USER | grep scriptname.sh | grep -v grep |wc -l

As Perderabo noted separately, your shell probably forked.

Another hint: You can save a process --- and time unless $USER has thousands of processes running but maybe even then --- this way (idea from Essential System Administration by Aeleen Frisch, 2nd edition, but I think a 3rd is out now):

Code:

ps -fu$USER | grep '[s]criptname.sh' |wc -l

Why this works is left as an exercise for the reader ... Smilie

criglerj

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LEARN ABOUT POSIX

zgrep

ZGREP(1)						      General Commands Manual							  ZGREP(1)

NAME

       zgrep - search possibly compressed files for a regular expression

SYNOPSIS

       zgrep [ grep_options ] [ -e ] pattern filename...

DESCRIPTION

       Zgrep  invokes  grep  on  compressed  or  gzipped  files.   These  grep	options  will  cause  zgrep  to  terminate  with  an  error  code:
       (-[drRzZ]|--di*|--exc*|--inc*|--rec*|--nu*).  All other options specified are passed directly to grep.  If no file is specified,  then  the
       standard input is decompressed if necessary and fed to grep.  Otherwise the given files are uncompressed if necessary and fed to grep.

       If the GREP environment variable is set, zgrep uses it as the grep program to be invoked.

EXIT CODE

       2 - An option that is not supported was specified.

AUTHOR

       Charles Levert (charles@comm.polymtl.ca)

SEE ALSO

       grep(1), gzexe(1), gzip(1), zdiff(1), zforce(1), zmore(1), znew(1)

																	  ZGREP(1)