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Full Discussion: How to extract port number?
Top Forums Shell Programming and Scripting How to extract port number? Post 302766555 by Subbeh on Tuesday 5th of February 2013 03:34:58 AM
Old 02-05-2013
Another way to get the port is by using grep -o:
Code:
grep -o PORT=[0-9]* file

Or by using perl:
Code:
perl -ne '/PORT=([0-9]*)/; print $1' file


Last edited by Subbeh; 02-05-2013 at 04:51 AM..
 

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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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