#!/bin/bash #extracting command text_text_text_line options as parameters help_info(){ echo "NAME" echo "t$0" echo "SYNOPSIS" echo "t$0 is a shell test about process options" echo "DESCRIPTION" echo "toption like -a -b param1 -c param2 -d" } if [ $# -lt 0 ] then help_info fi nomal_opts_act() { echo -e "n### nomal_opts_act ###n" while [ -n "$1" ] do case "$1" in -a) echo "Found the -a option" ;; -b) echo "Found the -b option" echo "The parameter follow -b is $2" shift ;; -c) echo "Found the -c option" echo "The parameter follow -c is $2" shift ;; -d) echo "Found the -d option" ;; *) echo "$1 is not an option" ;; esac shift done } #用shell命令自建的选项解析，可以按照自己的想法实现 #优点：自己定制，没有做不到，只有想不到 #缺点：麻烦 getopt_act() { echo -e "n### getopt_act ###n" GETOPTOUT=`getopt ab:c:d "$@"` set -- $GETOPTOUT while [ -n "$1" ] do case $1 in -a) echo "Found the -a option" ;; -b) echo "Found the -b option" echo "The parameter follow -b is "$2"" shift ;; -c) echo "Found the -c option" echo "The parameter follow -c is "$2"" shift ;; -d) echo "Found the -d option" ;; --) shift break ;; *) echo "Unknow option: "$1"" ;; esac shift done param_index=1 for param in "$@" do echo "Parameter $param_index:$param" param_index=$[ $param_index + 1 ] done } #用getopt命令解析选项和参数 #优点：相对与getopts来说是个半自动解析，自动组织选项和参数，用 -- 符号将选项与参数隔开 #缺点：相对于getopts的缺点 #1.需要与set -- 命令配合，不是必须，需要手动shift #2.选项参数中不支持空格如 -a -b dog -c "earth moon" -d -f param1 param2 就会解析错误 getopts_act() { echo -e "n### getopts_act ###n" while getopts :ab:c:d ARGS do case $ARGS in a) echo "Found the -a option" ;; b) echo "Found the -b option" echo "The parameter follow -b is $OPTARG" ;; c) echo "Found the -c option" echo "The parameter follow -c is $OPTARG" ;; d) echo "Found the -d option" ;; *) echo "Unknow option: $ARGS" ;; esac done shift $[ $OPTIND -1 ] param_index=1 for param in "$@" do echo "Parameter $param_index:$param" param_index=$[ $param_index + 1 ] done } #getopts 命令解析选项和参数 #优点：可在参数中包含空格如：-c "earth moon" # 选项字母和参数值之间可以没有空格如：-bdog # 可将未定义的选项绑定到?输出 # Unknow option: ? nomal_opts_act -a -b dog -c earth -d -f param1 param2 getopts_act -a -b dog -c "earth moon" -d -f param1 param2 getopt_act -a -b dog -c earth -d -f param1 param2
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