Thanks boss..tried it and it worked but on opening xterminal i get cannot create directory /dev/cgroup/ermission denied -sh: /home/user/. bashrc: line 1:cannot create /dev/cgroup/cpu/user/2095/tasks: nonexistent directory -sh: /home/user/ .bashrc: line 1: cannot create /dev/cgroup/cpu/user/2095/notify_on_release: nonexistent directory..