Use getopts in Shell

[[Email protected] shell] # Cat getopts. Sh

#! /Bin/bash

# Date = 2014-09-16

# Is to practice the getopts

While getopts "A: BC" Arg (: The preceding variable must follow the parameter)

Do

Case $ ARG in

A)

Echo "A's Arg: $ optarg"

;;

B)

Echo "B"

;;

C)

Echo "C"

;;

?)

Echo "unkown argument"

Exit1

;;

Esac

Done

[[Email protected] shell] #./getopts. Sh-B

B

[[Email protected] shell] #./getopts. Sh-C

C

[[Email protected] shell] #./getopts. Sh C

[[Email protected] shell] #./getopts. Sh-A/root/

A's Arg:/root/

If no parameter is added, an error is returned.

[[Email protected] shell] #./getopts. Sh-

./Getopts. sh: option requires an argument --

Unkown argument

./Getopts. sh: line 18: exit1: Command not found

This article is from the "route sweat exchange successful" blog, please be sure to keep this source http://ghnhl.blog.51cto.com/1630025/1553353

Use getopts in Shell