Requiring One and Only One Argument In A Bash Function
May - 2021
This is an example function you can add to your .rc files that requires exactly one argument to run. It checks to make sure there's an argument in slot $1
otherwise it bails. Once it's past that check, it checks to see if an extra argument was passed in slot $2
and bails if that's the case.
Quotes can be used if you need an argument with spaces in it (e.g. `my_command "roll tide").
function my_command () {
if [ "$1" ]
then
if [ "$2" ]
then
echo "You passed too many arguments"
else
echo "Got: $1 - Do Stuff Here"
fi
else
echo "You need to pass an argument"
fi
}