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Full Discussion: How to create an executable bash script for these commands?
Top Forums Shell Programming and Scripting How to create an executable bash script for these commands? Post 302903123 by thixeqi on Sunday 25th of May 2014 01:38:40 AM
Old 05-25-2014
How to create an executable bash script for these commands?
I wish to create an executable bash script that will run the following commands as root, that is, using sudo su
Code:
iptables-save | awk '/^[*]/ { print $1 } 
                     /^:[A-Z]+ [^-]/ { print $1 " ACCEPT" ; }
                     /COMMIT/ { print $0; }' | iptables-restore

My first attempt at bash scripting is as follows:
Code:
#!/bin/bash
sudo su
iptables-save | awk '/^[*]/ { print $1 } 
                     /^:[A-Z]+ [^-]/ { print $1 " ACCEPT" ; }
                     /COMMIT/ { print $0; }' | iptables-restore
sleep 3;
exit 0

Could someone correct the above and make it workable?
 

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LEARN ABOUT SUNOS

iptables-save

IPTABLES-SAVE(8)						  iptables 1.6.1						  IPTABLES-SAVE(8)

NAME

       iptables-save -- dump iptables rules to stdout

       ip6tables-save -- dump iptables rules to stdout

SYNOPSIS

       iptables-save [-M modprobe] [-c] [-t table]

       ip6tables-save [-M modprobe] [-c] [-t table]

DESCRIPTION

       iptables-save  and ip6tables-save are used to dump the contents of IP or IPv6 Table in easily parseable format to STDOUT. Use I/O-redirect-
       ion provided by your shell to write to a file.

       -M, --modprobe modprobe_program
	      Specify the path to the modprobe program. By default, iptables-save will inspect /proc/sys/kernel/modprobe  to  determine  the  exe-
	      cutable's path.

       -c, --counters
	      include the current values of all packet and byte counters in the output

       -t, --table tablename
	      restrict output to only one table. If not specified, output includes all available tables.

BUGS

       None known as of iptables-1.2.1 release

AUTHORS

       Harald Welte <laforge@gnumonks.org>
       Rusty Russell <rusty@rustcorp.com.au>
       Andras Kis-Szabo <kisza@sch.bme.hu> contributed ip6tables-save.

SEE ALSO

       iptables-apply(8),iptables-restore(8), iptables(8)

       The  iptables-HOWTO, which details more iptables usage, the NAT-HOWTO, which details NAT, and the netfilter-hacking-HOWTO which details the
       internals.

iptables 1.6.1															  IPTABLES-SAVE(8)
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