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Top Forums Shell Programming and Scripting While loop problem taking too long Post 302778615 by SkySmart on Monday 11th of March 2013 10:16:36 AM
Old 03-11-2013
While loop problem taking too long

Code:
while read myhosts
do
                                while read discovered
                                do
                                                echo "$discovered"
                                     
                                done < $LOGFILE | grep -Pi "[a-z]|[A-Z]" | egrep "${myhosts}" | egrep "CRITICAL" | awk -F";" '{print $3}' | sort -n | uniq

done < $SERVERS | egrep -v "#"

can the above be fixed? for some weird reason it's taking forever to complete.

the logfile is only 31MB. the list of servers in "SERVERS" is only 10.
 

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XZGREP(1)							     XZ Utils								 XZGREP(1)

NAME
xzgrep - search compressed files for a regular expression SYNOPSIS
xzgrep [grep_options] [-e] pattern file... xzegrep ... xzfgrep ... lzgrep ... lzegrep ... lzfgrep ... DESCRIPTION
xzgrep invokes grep(1) on files which may be either uncompressed or compressed with xz(1), lzma(1), gzip(1), or bzip2(1). All options specified are passed directly to grep(1). If no file is specified, then the standard input is decompressed if necessary and fed to grep(1). When reading from standard input, gzip(1) and bzip2(1) compressed files are not supported. If xzgrep is invoked as xzegrep or xzfgrep then egrep(1) or fgrep(1) is used instead of grep(1). The same applies to names lzgrep, lze- grep, and lzfgrep, which are provided for backward compatibility with LZMA Utils. ENVIRONMENT
GREP If the GREP environment variable is set, xzgrep uses it instead of grep(1), egrep(1), or fgrep(1). SEE ALSO
grep(1), xz(1), gzip(1), bzip2(1), zgrep(1) Tukaani 2009-07-05 XZGREP(1)
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