Linux - getopts does not work - bash

getopts does not work – bash… here is a solution to the problem.

getopts does not work – bash

I’m writing a bash script that accepts parameters. I’m using getopts to implement it.

#!/bin/bash

while getopts ":a" opt; do
  case $opt in
    a)
      echo "-a was triggered!" >&2
      ;;
    \?)
      echo "Invalid option: -$OPTARG" >&2
      ;;
  esac
done

But the above code returned this error to me.

'etOpts_test.sh: line 4: syntax error near unexpected token `in
'etOpts_test.sh: line 4: `  case $opt in

I’m using CentOs 5.5

Solution

In line 4, you may need case "$opt" in (reference $opt). Otherwise, if it contains a metacharacter, it may fail.

Linux – getopts does not work – bash

getopts does not work – bash

Solution

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