Bash tips and tricks
For the uninitiated, bash is the default shell in many Linux distros, including Fedora, Ubuntu, Redhat etc etc. If you use a Linux based OS, then chances are that you are using bash. For this reason, I outline below a few common annoyances, and the simple ways to over come them.
1. Lost bash history
If you have a terminal open and are typing commands, then open another one and use that for a while, the new terminal won’t remember any of the commands typed in the first one. In addition, closing the first terminal, and then the second will overwrite any of the commands typed in the first terminal. Doubly annoying!
This happens because the bash history is only saved when you close the terminal, not after each command. To fix it:
Edit your .bashrc (for beginners, any file starting with a . is hidden - they contain user preferences.)
nano ~/.bashrc
No need for a sudo here Ubuntuers, this is your own file, not a system setting. I like nano, but it’s up to you, choose gedit, kate, mousepad, vi or emacs as you wish.
add the lines
shopt -s histappend
PROMPT_COMMAND=’history -a’
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