Linux Tips

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

Good Proxy http://www.publicproxyservers.com/

VPN, OpenVPN http://www.vpnbook.com/freevpn

http://www.securitykiss.com/resources/download/mac/tunnelblick_tutorial/

 

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

multiple Python versions on Centos: http://toomuchdata.com/2014/02/16/how-to-install-python-on-centos/

 

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

Repositories Centos Redhat Fedora epel: http://www.rackspace.com/knowledge_center/article/install-epel-and-additional-repositories-on-centos-and-red-hat

Bash cut string substring

bashtrick

 

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>

https://askubuntu.com/questions/829700/reload-static-ip-ubuntu-16

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