shell 脚本参数解析

一、getopts 短选项

#!/bin/bash
while getopts ":pq:" OPTNAME
do
  case "${OPTNAME}" in
    "p")
      echo "get ${OPTNAME} option"
      ;;
    "q")
      echo "Option ${OPTNAME} has value ${OPTARG}"
      ;;
    "?")
      echo "UnKnown Option ${OPTARG}"
      ;;
    ":")
      echo "No argument value for option ${OPTARG}"
      ;;
    "*")
      echo "UnKnow error while processing options"
      ;;
  esac
echo "OPTIND is now ${OPTIND}"
done

TEST：
#sh opt1.sh  -p
get p option
OPTIND is now 2
#sh opt1.sh  -q
No argument value for option q
OPTIND is now 2
#sh opt1.sh  -q 123 
Option q has value 123
OPTIND is now 3
#sh opt1.sh  -q 123 -a
Option q has value 123
OPTIND is now 3
UnKnown Option a
OPTIND is now 4

二、getopt 长短选项

三、$@