Work/Home switcher script

January 25, 2009

Recently, i decided to bring my laptop to the work, so i start using it and leaving my work PC as testing machine,, also connecting to online servers through it. In the work we used a static IP with a static gateway for each department, also with a specific resolv.conf configuration,, at home, i use another configuration for network and internet connection,, so every time i go home, i need to reconfigure the internet,, when i go to the work, i also need to reconfigure the network.. so i decided to write a script so it help me to automate this. Also as i said, i will use my work PC to connect to online servers, yes i can connect through my laptop, but when i go home i must connect to the work PC so i can connect to the online servers. mmmmm,, so my idea was to automate the network connection and also if am at the work then each terminal i open it must login directly to my work PC,,, also my mind didn't work from a long time maybe 3 months and i started to 4get many things so i need to refresh it somehow 😉 the following is the script i wrote:

#!/bin/bash ##Default to be home :S whereIam='scripts/work-home/work' touch ~/$whereIam; while true do if [ -f ~/$whereIam ] then sudo /home/idle-boy/scripts/work-home/net_conf.sh 1 > /dev/null zenity --notification --window-icon=/usr/share/icons/Fedora/48x48/apps/redhat-main-menu.png --text 'I am in the work!'; rm -rf ~/scripts/work-home/work else sudo /home/idle-boy/scripts/work-home/net_conf.sh 0 /dev/null zenity --notification --window-icon=/usr/share/icons/HighContrast-SVG/scalable/emotes/face-wink.svg --text 'OoOpPps am home!?'; touch ~/scripts/work-home/work fi done

The script simply touch a file under ~/scripts/work-home/ named 'work',, if the file exist then am in the work,, if the file not exist then am at home,, also i used zenity so it display a notification so when i want to change mode i just click on it. for internet configuration i wrote the script /home/idle-boy/scripts/work-home/net_conf.sh , and i use sudo to run it as root,, the script is:

#!/bin/bash if [ $1 -eq 1 ] then ## work conf: #stop network /etc/init.d/NetworkManager stop /etc/init.d/network stop #configure eth0 /sbin/ifconfig eth0 192.100.80.196 netmask 255.255.254.0 #bring loopback interface up /sbin/ifconfig lo up #add gateway /sbin/route add -net 0.0.0.0 gw 192.100.81.9 #insert resolv.conf configuration #i always lock resolv.conf, so unlock it chattr -i /etc/resolv.conf >/etc/resolv.conf echo 'search maktoob.com' >> /etc/resolv.conf echo 'nameserver 127.0.0.1' >> /etc/resolv.conf echo 'nameserver 192.100.81.9' >> /etc/resolv.conf #lock it again chattr +i /etc/resolv.conf else ## home conf: #bring up the network and NetworkManager #i use NetworkManager to connect to wlan, so it take everything from the router via DHCP /etc/init.d/network restart /etc/init.d/NetworkManager restart #i don't like getting resolv.conf configuration via NetworkManager, am home!,, so: chattr -i /etc/resolv.conf > /etc/resolv.conf echo 'nameserver 127.0.0.1' >> /etc/resolv.conf echo 'nameserver 212.118.0.1' >> /etc/resolv.conf echo 'nameserver 212.118.0.2' >> /etc/resolv.conf chattr +i /etc/resolv.conf fi

Posted in bash, Scripting & CLI