Shell 脚本参数声明

1. 示例

test.sh

#!/bin/bash

PARSED=$(getopt -o a:b:c --long alpha:,bravo:,charlie -n "$(basename "$0")" -- "$@")
if [[ $? -ne 0 ]]; then
  echo "Failed to parse options." >&2
  exit 1
fi

eval set -- "$PARSED"

while true; do
  case "$1" in
    -a|--alpha)
      echo "Option a (alpha): $2"
      shift 2
      ;;
    -b|--bravo)
      echo "Option b (bravo): $2"
      shift 2
      ;;
    -c|--charlie)
      echo "Option c (charlie) (no argument)"
      shift
      ;;
    --)
      shift
      break
      ;;
    *)
      echo "Invalid option: $1" >&2
      exit 1
      ;;
  esac
done

for arg in "$@"; do
  echo "Remaining argument: $arg"
done