For more tips and tricks like this, be sure to read Command Line Kung Fu. You can quickly increase your productivity at the Linux command line by using tab completion. Tab completion can save you keystrokes, prevent spelling mistakes, and guide you through complex commands. It works with file names, commands, command arguments, and more. … Read more
Comments and blank lines can be great. They provide context and can make configuration files easier to read. So why in the world would you want to get rid of them? Well, to aid in troubleshooting! Can you imagine paging through a 1,200 line configuration file looking for anything that might be out of place? … Read more
If you ever forget to run a command with root privileges, you can simply repeat it by using sudo !! or su -c “!!”. $ adduser sam -bash: /usr/sbin/adduser: Permission denied $ sudo !! sudo adduser sam $ id sam uid=1007(sam) gid=1007(sam) groups=1007(sam) $ usedel -r sam -bash: /usr/sbin/userdel: Permission denied $ sudo !! sudo … Read more