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Full Discussion: Script to write result to a file
Top Forums Shell Programming and Scripting Script to write result to a file Post 302749355 by RudiC on Friday 28th of December 2012 06:08:56 AM
Old 12-28-2012
You can have more than one IP address as the result of above cmd pipe:
Code:
$ ifconfig | grep 'inet addr:'| grep -v '127.0.0.1' | cut -d: -f2 | awk '{ print $1}'
10.1.1.1
192.168.2.254

, so make sure you know exactly what you are doing. Once you have your new ip in a variable, say, NEWIP, you can use
Code:
awk '/webproxy/ {sub(/...\....\....\..../, newip)}1' newip=$NEWIP  config.sh

. Some awk version do have an easier way to specify the replacement pattern using EREs. Redirect to new file and then rename.
This User Gave Thanks to RudiC For This Post:
Shaan_Shaan
 

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LEARN ABOUT V7

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)
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