Shell script calls sudo; how do I suppress the password prompt

Question

I am writing a simple shell script which changes the mac address of the network hardware. One of the line is :

sudo ifconfig eth0 hw ether 00:99:99:00:00:00
         


        

Answer 1

Here is a Zenity dialog that does something similar to Tman's comment,
though the password isn't stored in history... This may be a good alternative

#!/bin/bash
ENTRY=`zenity --password`
case $? in
0)
pw=$(echo $ENTRY | cut -d'|' -f1)
;;
1)
echo "Stop login.";;
-1)
echo "An unexpected error has occurred.";;
esac
TMP=$(echo "${pw}" | sudo -Sv)
TMP=0