Automate SUDO commands at startup e.g. for enabling WIFI

A friend of mine has a Fujitsu Siemens Amilo li 2727 laptop running Windows Vista.

I installed Ubuntu 12.4 LTS on this system, but alas, the wireless didn't work. This is the way I solved it:

Make a new textfile with these commands in it:

sudo modprobe -r ath5k

sudo modprobe acer_wmi

sudo modprobe ath5k

I gave it the name wifi-on.sh

On a Medion MD97600 laptop the commands for enabiling WIFI are a bit different: Read the original site here in French

first you should install som drivers:

sudo add-apt-repository ppa:cogito-16/ppa 

sudo apt-get update

sudo apt-get install build-essential acerhk-source

sudo -s

cd /usr/src/

tar -xjvf acerhk.tar.bz2

cd modules/acerhk

make

make install

modprobe acerhk

echo 1 > /proc/driver/acerhk/wirelessled

exit

now enter these commands in a textfile

modprobe acerhk

echo 1 > /proc/driver/acerhk/wirelessled

I gave it the name wifi-on.sh

make it executable. (e.g. bij setting the rights with nautilus)

Enter ALT F2 and enter: gksu gedit /etc/sudoers and press enter.

and in the file that opens, add to the very last line (replacing "username" with your login name):

-------------------------------------------------------------------

username ALL= NOPASSWD: scriptpath

-------------------------------------------------------------------

BE SURE TO REPLACE "username" WITH YOUR LOGIN NAME.

and replace scriptpath with the path to the file you want to run without a password.

for example, I want the script to run at startup as sudo without typing in the password. The last line in my file looks like:

jeroen ALL= NOPASSWD: /home/jeroen/wifi-on.sh

where "jeroen" is my user name and "/home/jeroen/wifi-on.sh" is the script i want to run.

now save the file and close it. you are now allowed to run your script as sudo without typing in a password.

so go to system > preferences > sessions and add the command you want to run at startup under "startup programs", mine looks like:

gksu /home/jeroen/wifi-on.sh (replacing the path with the path to your script).

Reboot and configure your Wifi.

Reboot again and the machine should go online automatically. Even better than Windows Vista does.