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Top Forums UNIX for Advanced & Expert Users Script to parse and compare information in two fields of file Post 302953434 by RudiC on Friday 28th of August 2015 05:29:15 AM
Old 08-28-2015
You're zcatting "$NBSPATH"/"$FILE1" and running grep | awk once for every CFA in $FILE2. That consumes a lot of resources. Why don't you uncompress once into a temp file and use e.g. grep -f $FILE2 on the temp file? Does your system offer the zgrep command?
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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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