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Command line arguments for Bash with getopts

/ Published in: Bash
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How to combine getopts options with (-) and non-options.

After processing all options, variable OPTIND contains the value of the first non-option (commandline argument that doesn't start with (-)).

Shift command will clean previous commandline options.

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  1. #!/bin/bash
  2.  
  3. while getopts "u:p:" opt; do
  4.  
  5.   case $opt in
  6.     u)
  7.       echo "-u was triggered, Parameter: $OPTARG"
  8.       dbuser="$OPTARG"
  9.       ;;
  10.     p)
  11.       echo "-p was triggered, Parameter: $OPTARG"
  12.       dbpass="$OPTARG"
  13.       ;;
  14.     \?)
  15.       echo "Invalid option: -$OPTARG"
  16.       exit 1
  17.       ;;
  18.     :)
  19.       echo "Option -$OPTARG requires an argument."
  20.       exit 1
  21.       ;;
  22.   esac
  23.  
  24.  
  25. done
  26.  
  27. # Clear all options and reset the command line
  28. shift $(( OPTIND -1 ))
  29.  
  30. # First parameter
  31. if [ -z "$1" ]; then
  32.     echo "usage: $0 [-u name] [-p password] file"
  33.     exit
  34. fi

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