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Full Discussion: Else Loop Exiting Early
Top Forums Shell Programming and Scripting Else Loop Exiting Early Post 302177269 by GregWold on Thursday 20th of March 2008 01:44:49 PM
Old 03-20-2008
Program Flow/Logic Question

Sorry, I'm new to this and am surprised I've made it this far.

Can I do a

Code:
UL_PROCESS=$(ps -eaf | grep $PROGRAM | grep -v grep | wc -l)

while [ $UL_PROCESS -ne 0 ]
do
...
done

or should it be

Code:
while [ `ps -eaf | grep $PROGRAM | grep -v grep | wc -l` -ne 0]
do
...
done

?
 

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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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