How to create an executable bash script for these commands? Post: 302903140

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Top Forums Shell Programming and Scripting How to create an executable bash script for these commands? Post 302903140 by thixeqi on Sunday 25th of May 2014 07:15:46 AM

05-25-2014

Banned

How do you transform the following into a single line?

Code:

iptables-save | awk '/^[*]/ { print $1 } 
                     /^:[A-Z]+ [^-]/ { print $1 " ACCEPT" ; }
                     /COMMIT/ { print $0; }' | iptables-restore

Does it look like this?

Code:

iptables-save | awk '^[*] { print $1 } ^:[A-Z]+ [^-] { print $1 " ACCEPT" ; } COMMIT { print $0; }' | iptables-restore

I removed the "/" wherever it appears. Am I correct to state that the "/" is used to break a long line into smaller lines?

What I plan to do is:

Code:

#!/bin/bash
iptables-save | awk '^[*] { print $1 } ^:[A-Z]+ [^-] { print $1 " ACCEPT" ; } COMMIT { print $0; }' | iptables-restore
sleep 3;
exit 0

Save the above and call it cleariptables.sh. I will set it as executable.

It will be placed in a folder called bin in the following path: /home/bonafide/bin/

(bonafide is the username)

I will create a shortcut to cleariptables.sh on the desktop. The contents of the shortcut will be:

Code:

[Desktop Entry]
Version=1.0
Type=Application
Terminal=true
Icon[en_US]=nm-device-wired
Name[en_US]=ClearIPtables
Exec=gksudo /home/bonafide/bin/cleariptables.sh
Comment[en_US]=Flush iptables filters
Name=ClearIPtables
Comment=Flush iptables script
Icon=nm-device-wired

Whenever I click on the desktop shortcut, I will be prompted to enter the password and the script will run.

thixeqi

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LEARN ABOUT DEBIAN

ip6tables-apply

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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LEARN ABOUT DEBIAN

ip6tables-apply