How to unset a variable in bash or terminal (Linux)

unset command can be used to unset a variable in the terminal.

Let’s see an example

test=some_value
echo "Value before unset=$test"
unset test
echo "Value after unset=$test"

Output

Value before unset=some_value
Value after unset=

As you can see from the output above that the value of variable test becomes empty after unset command is run.