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UNIX for Beginners Questions & Answers
Can't grep for warning in log file
Post 303033119 by vbe on Saturday 30th of March 2019 08:43:59 AM
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Hi
Im running a backup scriptwhich creates a log file
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i.e
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Okay, I got a log file, and I need to use a combo of the tail -f command and the grep command, but I don't want to see all the output, other than what I'm "grepping". As well I'd like it to stop tailing and searching and just return to the command line, once it finds 1 line with that string in it.... (1 Reply)
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Hi Gurus,
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I am trying to grep value.
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... (4 Replies)
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Hello,
I am new to shell scripting. I need to write a shell script where i can grep the name of file ie. .sh file and log file from crontab -l.
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logfile="/var/tmp.log"
output=$(grep "ERROR" $logfile)
if
then
echo "exceptions logged , please check /var/tmp.log for more details" |\
mail -s "exceptions logged , please check /var/tmp.log on for more details" $DL
else
echo "not found"
fi
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Hello,
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Putting that in bullet points:
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LEARN ABOUT PLAN9
zgrep
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)