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Full Discussion: Regex & grep-foo
Top Forums Shell Programming and Scripting Regex & grep-foo Post 302277970 by DoneWithM$ on Monday 19th of January 2009 02:28:14 AM
Old 01-19-2009
Regex & grep-foo

I need a way to grep -v a list of times/date from the output of postqueue -p that are a few hours old, in order to remove them with postsuper -d.

Right now I have a script that is deleting the previous day of messages left in the queue, which runs once each day.

I want to clean up the job and delete every message more than X hours old, every hour.

Right now I'm running :
postqueue -p | grep $(date --date=yesterday +"%a %b") | cut -d" " -f1 | postsuper -d -

Which simply finds the day and month of the message eg."Sun Jan". Ugly, but functional.

The messages are tagged with "DAY MONTH TIME(HH:MM:SS)". How do I go about selecting all the ones that are older than X hours?
 

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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 is used to invoke the grep on compress'ed or gzip'ed files. All options specified are passed directly to grep. If no file is speci- fied, 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 zgrep is invoked as zegrep or zfgrep then egrep or fgrep is used instead of grep. If the GREP environment variable is set, zgrep uses it as the grep program to be invoked. For example: for sh: GREP=fgrep zgrep string files for csh: (setenv GREP fgrep; zgrep string files) AUTHOR
Charles Levert (charles@comm.polymtl.ca) SEE ALSO
grep(1), egrep(1), fgrep(1), zdiff(1), zmore(1), znew(1), zforce(1), gzip(1), gzexe(1) ZGREP(1)
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