Issue
In order to save some time typing same phrase many times, I defined some variables in in BASH (not a bash file, just the command line bash). How careless I was to give a variable wrong name foo1 instead of foo. So, I want to undefine foo1.
I know I can set foo1 empty and define foo. By doing this, foo1 is still there and may confuse. I cannot use unset to undefine foo1 because it is not an environment variable.
Question: How to undefine a variable in BASH?
Solution
You just need to use the command unset:
unset foo1
It doesn't matter if foo1 isn't an environment variable.
Answered By - Knut Holm Answer Checked By - David Marino (WPSolving Volunteer)