Check if getops argument is of a certain type

Asked May 23 '21 at 20:22

Active May 23 '21 at 20:33

Viewed 19 times

I'm completely new with bash so I don't know how most things work.

I have this code which works when I enter the right type of arguments, but I need that the argument that goes with the -a flag can only be a string of letters and that the argument that goes with the -b flag can only be a string of numbers. Otherwise it should give an error message and exit.

while getopts a:b flag; do
    case "${flag}" in
        a) times=${OPTARG};;
        b) type=${OPTARG};;
    esac
done

java -jar TestSort.jar $times $type

should I create a function that checks every character of the argument string?

edited May 23 '21 at 20:33

asked May 23 '21 at 20:22

vale383

2

`bash` only has one type: string. – chepner May 23 '21 at 20:30
@chepner yes but I want to check if the string is numeric or not – vale383 May 23 '21 at 20:33
1

That seems like something you should let `TestSort.jar` worry about. – chepner May 23 '21 at 20:33
@chepner alright thank you! – vale383 May 23 '21 at 20:35

Check if getops argument is of a certain type

0 Answers0