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Top Forums Shell Programming and Scripting Newb with While loop question Post 302439137 by frans on Thursday 22nd of July 2010 02:08:58 AM
Old 07-22-2010
The indenting doesn't matter (just for readibility).
No need of func, no need of continue statement, it will continue anyway.
Code:
#! /bin/bash
while true
do
    if tcpdump -s 700 -t -n -N -X src 67.11.11.11 | grep -E "Miami|Austin|Chicago|Reno"
    then
        echo " found at " $(date)
        play sound.wav
    fi
done

 

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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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