Linux Tutorial Series – 88 – Review

Here is the video version, if you prefer it:

We looked at history and variables. In particular, we looked at:

• history is used to look at history; use CTRL + R for reverse search in history and CTRL + J to copy the command to your clipboard
• Dot files (files whose filenames begin with a dot) are hidden by default
• Variables are named parts of computer memory where values are stored
• Environment variables are variables passed to the shell by the operating system
• Shell variables are local to the shell
• Command path stores all of the places to look for executables
• Interactive shells require user input, non-interactive don’t
• Login shells exist to do some things only once
• Your Terminal application is an interactive, non-login shell
• Place almost all changes you want permanently in .bashrc file in your home directory

Let’s carry on with our Linux journey!