03-19-2012
Hi.
The Last post by Scrutinizer suggested to me that parallelization might be feasible here.
The OP has nothing about the characteristics of the AIX box, but I seem to recall that I have used AIX on a 12-CPU dual 3090 that had a lot of processing power (regrettably only 32-bit, but that's another story).
So if the box has enough oomph, then firing off a number of background processes, each handling a number of files, could decrease the real time, which is apparently what concerns the OP.
Best wishes ... cheers, drl
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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)