shell 命令行选项处理方法 getopts

一个完善的shell脚本应该能处理行如 -option 的命令行选项，bash 有一个内置的命令 getopts 可用来处理命令行选项 示例，用法 getopts.h -x -y YARG -z ZARG * bbkf:/yzyfb/report/cdq/bash$cat getopts.sh

#!/bin/bash

# getopts.sh - Using getopts

############################## while getopts xy:z: opt;

do

case $opt in

x) xopt=-x set;;

y) yopt="-y set and called with $OPTARG" ;;

z) zopt="-z set and called with $OPTARG" ;;

\?) echo USAGE: getopts.sh [-x] [-y arg] [-z arg] file ...

exit 1

esac

done shift $(($OPTIND - 1 )) echo ${xopt:-did not use -x}

echo ${yopt:-did not use -y}

echo ${zopt:-did not use -z}