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Top Forums Shell Programming and Scripting Advanced AWK Regexp substring to int & Replace Post 302548010 by Beachboy72 on Wednesday 17th of August 2011 08:48:30 AM
Old 08-17-2011
Advanced AWK Regexp substring to int & Replace

Hi!

I have a difficult problem, to step up a unknown version number in a text file, and save the file. It would be great to run script.sh and the version gets increased.
Example the content of the textfile.txt
hello
version = x
bye

This include three steps
1. First find the char after "version =" e.g 5
2. Convert? the 5 to a integer and increase the value with 1, in this case result is 6
3. Replace the 5 with a 6
4. save the file

I understand this is a VERY difficult problem, if you can in any way it would be great, i tried with SED earlyer, but got stuck.

Thanks in advance
Beachboy72
 

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iptables-apply(8)					      System Manager's Manual						 iptables-apply(8)

NAME
iptables-apply - a safer way to update iptables remotely SYNOPSIS
iptables-apply [-hV] [-t timeout] ruleset-file DESCRIPTION
iptables-apply will try to apply a new ruleset (as output by iptables-save/read by iptables-restore) to iptables, then prompt the user whether the changes are okay. If the new ruleset cut the existing connection, the user will not be able to answer affirmatively. In this case, the script rolls back to the previous ruleset after the timeout expired. The timeout can be set with -t. When called as ip6tables-apply, the script will use ip6tables-save/-restore instead. OPTIONS
-t seconds, --timeout seconds Sets the timeout after which the script will roll back to the previous ruleset. -h, --help Display usage information. -V, --version Display version information. SEE ALSO
iptables-restore(8), iptables-save(8), iptables(8). LEGALESE
iptables-apply is copyright by Martin F. Krafft. This manual page was written by Martin F. Krafft <madduck@madduck.net> Permission is granted to copy, distribute and/or modify this document under the terms of the Artistic License 2.0. 2006-06-04 iptables-apply(8)
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