Auto exec file?

[thahabbis]

Im using my Linux server as a router(debian)

But every time i restart it i have to type 2 commands to start the routing! but i want it to autoexec on startup, if thats extreamly hard i want it to exec on login

[iwanabeguru]

write the command to a script
give the run permission to the script and copy it to the /etc/init.d directory
make a symlink from /etc/rcX.d to the script in the init directory
X means the runlevel
each symlinks have this format "S"or"K""ordinal number""name"

for example:
the script

#!/bin/sh
routing command 1
routing command 2
exit 0

save it as routing
chmod 744 routing
cp routing /etc/init.d
the default runlevel is 2
ln -s /etc/init.d/routin /etc/rc2.d/S90routing

and its done

[thahabbis]

Im such a newbie...... i didnt understand that

if i want the command "# echo 1 > /proc/sys/net/ipv4/ip_forward" to run every time user "myuser" log in...

whats the script then?

[iwanabeguru]

put that line to the .bashrc file in "myuser"s home and it will run run evry time when you log in