shell getopts 的使用模板

demo1

#!/bin/bash

function usage() {
  echo "Usage: $0 -s FUNCTION -n NAME"
}

while getopts ":s:n:" opt; do
  case ${opt} in
    s )
      func=$OPTARG
      ;;
    n )
      name=$OPTARG
      ;;
    \? )
      echo "Invalid option: $OPTARG" 1>&2
      usage
      exit 1
      ;;
    : )
      echo "Option -$OPTARG requires an argument." 1>&2
      usage
      exit 1
      ;;
  esac
done

if [[ -z "$func" ]]; then
  echo "Function is required." 1>&2
  usage
  exit 1
fi

if [[ "$func" == "func1" ]]; then
  func1 "$name"
elif [[ "$func" == "func2" ]]; then
  func2 "$name"
else
  echo "Invalid function: $func" 1>&2
  usage
  exit 1
fi

function func1() {
  echo "Executing func1 with name=$1"
}

function func2() {
  echo "Executing func2 with name=$1"
}

demo2

#!/bin/bash

function=""
orgs=""

while [[ $# -gt 0 ]]
do
key="$1"

case $key in
    -func|--function)
    function="$2"
    shift # past argument
    shift # past value
    ;;
    --orgs)
    orgs="$2"
    shift # past argument
    shift # past value
    ;;
    *)    # unknown option
    echo "Unknown option: $key"
    exit 1
    ;;
esac
done

if [ "$function" == "appname" ]; then
    appname "$orgs"
else
    echo "Unknown function: $function"
    exit 1
fi

appname() {
    echo "Running appname with orgs: $1"
    # do something with the orgs parameter
}

demo3

#!/bin/bash

function usage {
  echo "Usage: $0 [-f|--function FUNCTION] [-o|--orgs ORGS]"
  echo ""
  echo "Options:"
  echo "-f, --function     Function to run"
  echo "-o, --orgs         Arguments to pass to function"
}

while getopts "f:o:-:" opt; do
  case "${opt}" in
    f | function)
      func=${OPTARG}
      ;;
    o | orgs)
      orgs=${OPTARG}
      ;;
    -)
      case "${OPTARG}" in
        function=*)
          func=${OPTARG#*=}
          ;;
        orgs=*)
          orgs=${OPTARG#*=}
          ;;
        *)
          echo "Invalid option: --${OPTARG}"
          usage
          exit 1
          ;;
      esac
      ;;
    *)
      usage
      exit 1
      ;;
  esac
done

if [ -z "${func}" ] || [ -z "${orgs}" ]; then
  usage
  exit 1
fi

echo "Running function '${func}' with arguments '${orgs}'"