#!/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