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Top Forums Shell Programming and Scripting Problem exiting a WHILE loop in ksh Post 302702337 by elixir_sinari on Tuesday 18th of September 2012 07:08:06 AM
Old 09-18-2012
Replace
Code:
while true
do
/opt/VRTSvcs/bin/hastatus -sum | grep "G group1"
sleep 15
done

with
Code:
while /opt/VRTSvcs/bin/hastatus -sum | grep -q "G group1" 2>/dev/null
do
sleep 15
done

This User Gave Thanks to elixir_sinari For This Post:
 

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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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