Linux Tips

Lock screen: ‘xscreensaver-command’ -lock
Vietnamese keyboard: addon firefox / extension chromium

Good Proxy



Ubuntu screen resolution resizable: sudo apt-get install virtualbox-guest-dkms

multiple Python versions on Centos:


virtualbox, network, nat, internet, DEFROUTE=no, don’t try to configure DEFROUTE=yes, centos6.0

Repositories Centos Redhat Fedora epel:

Bash cut string substring



Create user, change password remotely

Changing Linux User’s Password in One Command Line

Reload static ip address (when the old IP adress still persists):
sudo ifdown <network interface> && sudo ip addr flush <network interface> && sudo ifup <network interface>