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Full Discussion: How to replace all ip addresses in all files in directory in ksh?
Top Forums Shell Programming and Scripting How to replace all ip addresses in all files in directory in ksh? Post 302792209 by guruprasadpr on Wednesday 10th of April 2013 02:21:55 AM
Old 04-10-2013
If you are ok with a Perl solution:

Code:
$ cat file
abc 10.122.53
10.122.53.5
efg 25.a23.33.44
12.176.254.24

Perl command:
Code:
$ perl -i -ple 'if (/(.*)((\d{1,3}\.){3}\d{1,3})(.*)/){$x=$2;$x=~s/\d/x/g;$_=$1.$x.$3;}' file

File after the command:
Code:
$ cat file
abc 10.122.53
x.xxx.xx.x
efg 25.a23.33.44
x.xxx.xxx.xx


Guru.
 

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LEARN ABOUT V7

ali

ALI(1)								     [nmh-1.5]								    ALI(1)

NAME

       ali - list mail aliases

SYNOPSIS

       ali [-alias aliasfile] [-list | -nolist] [-normalize | -nonormalize] [-user | -nouser] [-version] [-help] [aliases ...]

DESCRIPTION

       Ali  searches  the named mail alias files for each of the given aliases.  It creates a list of addresses for those aliases, and writes that
       list on standard output.  If no arguments are given, ali outputs all alias entries.

       By default, when an aliases expands to multiple addresses, the addresses are separated by commas and printed on as few lines  as  possible.
       If the -list option is specified, then when an address expands to multiple addresses, each address will appear on a separate line.

       The  switch  -user  directs  ali  to  perform its processing in an inverted fashion: instead of listing the addresses that each given alias
       expands to, ali will list the aliases that expand to each given address.  If the -normalize switch is given, ali will try to track down the
       official hostname of the address.

       The  files  specified  by  the  profile entry "Aliasfile" and any additional alias files given by the -alias aliasfile switch will be read.
       Each alias is processed as described in mh-alias(5).

FILES

       $HOME/.mh_profile	  The user profile
       /etc/passwd		  List of users
       /etc/group		  List of groups

PROFILE COMPONENTS

       Path:		    To determine the user's nmh directory
       Aliasfile:	    For a default alias file

SEE ALSO

       mh-alias(5)

DEFAULTS

       `aliasfiles' defaults to /etc/nmh/MailAliases
       `-nolist'
       `-nonormalize'
       `-nouser'

CONTEXT

       None

BUGS

       The -user option with -nonormalize is not entirely accurate, as it does not replace local nicknames for	hosts  with  their  official  site
       names.

MH.6.8								   11 June 2012 							    ALI(1)
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