Shell Programming and Scripting

I need help writing a bash script that will simply prompt the user with a list of choices, then run an action based on the input. The action is running a wake-on-lan app called etherwake and passing a pre-defined mac address to the syntax.

I have defined the three MAC addresses as: MAC1, MAC2, MAC3. I'd like the script to do something like this:

The syntax of etherwake is:

sudo /usr/sbin/etherwake -i eth1 -b $MACNUMBER (where $MACNUMBER is predefined).

Any takers

Thanks!

Somewhere you have to tell the script what the mac addresses are? in the exact format that etherwake needs. colon : separated or dash - separated? Then you could maybe just do a script with an IF statement for each menu option? there are a lot more better ways to do it, but you could just run this script real quick if its all you need...

#!/usr/bin/bash
MAC1=00-0e-12-34-ab-c1
MAC2=00-0e-12-34-ab-c2
MAC3=00-0e-12-34-ab-c3
echo "Which PC to wake??
1) PC1
2) PC2
3) PC3
4) Wake PC2, wait 40sec, then wake PC3
Q) Quit and take no action"
read input1
if [ $input1 == 1 ]; then
sudo /usr/sbin/etherwake -i eth1 -b $MAC1
exit 1
fi
if [ $input1 == 2 ]; then
sudo /usr/sbin/etherwake -i eth1 -b $MAC2
exit 1
fi
if [ $input1 == 3 ]; then
sudo /usr/sbin/etherwake -i eth1 -b $MAC3
exit 1
fi
if [ $input1 == 4 ]; then
sudo /usr/sbin/etherwake -i eth1 -b $MAC2
echo "PC2 sent, now waiting for 40sec"
sleep 40
sudo /usr/sbin/etherwake -i eth1 -b $MAC3
exit 1
fi
if [ $input1 == Q ] || [ $input1 == q ]; then
echo "later!"
exit 1
fi

#end of script

i just typed this out....something like this "could" work but gotta check it for notation and everything. ohh and your first line might be a different path to bash
like #/bin/bash or something like that?

Code:

echo "Choose: 1,2,3,Q"

while read -n 1 yourinput
do
echo
 case "$yourinput"
 in
 1)
  echo "you pressed 1"
  ;;
 2)
  echo "This time you pressed 2"
  ;;
 3)
  echo "You wanted 3"
  ;;
 Q)
  exit 0
  ;;
 *)
  echo "I have no idea"
  ;;
 esac

done

@ajp - very cool, this is exactly what I wanted, thank you. One question though.. can I add an if statement that will start over is the user types an unidentified key (in other words, a key that isn't specified in the menu choices)?

The one I posted does that.

@Ikon - I tried your code out (very elegant by the way), but I'd like it to quit upon a successful answer. In other words, if the user selects on of the choices, it'll do the action, then quit.

Just add exit command like in the Q selection.