#!/bin/bash set -- `getopt -q ab:c "$@"` while [ -n "$1" ] do case "$1" in -a) echo "option -a";; -b) value="$2" echo "option -b with para $value" shift;; -c) echo "option -c";; --) shift break;; *) echo "$1 not option";; esac shift done count=1 for para in "$@" do echo "#$count=$para" count=$[$count+1] done
./test -ab test1 -cd test2 test3 test4
结果:option -a
option -b with para 'test1'
option -c
#1='test2'
#2='test3'
#3='test4'
getopt 用法:
getopt options optstring parameters
对于./test -ab test1 -cd "test2 test3" test4
这样的参数类型,getopt是无能为力的。这就需要getopts了
#!/bin/bash while getopts :ab:c opt do case $opt in a) echo "-a option";; b) echo "-b option with value $OPTARG";; c) echo "-c option";; *) echo $opt not a option;; esac done
OPTARG 环境变量存放对应选项的参数
./test -ab "hello,world" -cdefg
结果:
-a option
-b option with value hello,world
-c option
? not a option
? not a option
? not a option
? not a option
命令参数的处理
#!/bin/bash while getopts :ab:cd opt do case $opt in a) echo "-a option";; b) echo "-b option with value $OPTARG";; c) echo "-c option";; d) echo "-d option";; *) echo $opt not a option;; esac done count=1 shift $[$OPTIND-1] for para in "$@" do echo "#$count=$para" count=$[$count+1] done
./test -abtest1 -cd test2 test3 test4
结果:
-a option
-b option with value test1
-c option
-d option
#1=test2
#2=test3
#3=test4
OPTIND环境变量存放getopts命令剩余的参数列表当前位值
用法:getopts optstring variable