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Top Forums Shell Programming and Scripting How to check if Autosys is installed? Post 302984962 by MadeInGermany on Thursday 3rd of November 2016 03:59:47 AM
Old 11-03-2016
ps -ef prints the arguments, so grep *can* report its own process (race condition).
Further I guess the dot should be real (not any character).
Either use the [ ] trick
Code:
ps -ef | grep "cybAgent[.]bin"

or avoid the ps arguments
Code:
ps -eo pid,comm | fgrep cybAgent.bin

or use pgrep
Code:
pgrep "cybAgent[.]bin"

The exit status of all these grep commands can be tested. For example in an if clause
Code:
if pgrep "cybAgent[.]bin" >/dev/null
then
...

 

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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)
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