Hi there!
The SHELL environment variable specifies the default shell program that the current user is using or will use upon logging in.
In simpler terms, it tells your system which command-line interpreter (like Bash, Zsh, or Fish) you prefer to interact with. When you log into a Linux system, this variable determines which shell environment you'll be dropped into.
You can check its value using the command echo $SHELL in your terminal. For example, if you are using a Zsh shell, you might see /usr/bin/zsh as the output.
This is an important variable because different shells have different features, syntax, and ways of handling commands and scripts.
Keep up the great work!
