Linux under Bash programming combination test and scripting (v)

Linux under Bash programming combination test and write comprehensive script (v)

1.Bash Programming Combination test conditions

-A: With relation

-O: or relationship

!: Non-relational

Presentation Method 1:[$#-gt 100-a $#-le 500]

Presentation method 2:[$#-gt] && [$#-le 500]

2. Write a script that adds and deletes users as follows:

2.1: If the script option is--add:, the user will be added; If the option is--del, the user will be removed, if it is--help display Help information

2.2: Parameters following the script option can be arbitrarily specified by multiple users and separated by commas , password and user name;

2.3: The user exists on the prompt cannot be added, the user does not exist can not delete the user;

The script reads as follows:

Vim admuseradv.sh Create a script file:

#!/bin/bash

#以下红色部分是用来判断脚本后面参数是否正确, i.e. up to 2 parameters

If [$#-lt 1-o $#-gt 2]; Then

echo "ARGUS is bad,you use Script--help"

Exit 8

elif [$#-eq 1-a ' = = '--add ']; Then

echo "ARGUS is bad,you use Script--help"

Exit 18

elif [$#-eq 1-a ' = = '--del ']; Then

echo "ARGUS is bad,you use Script--help"

Exit 16

Fi

#以下黑色部分是用来判断是否添加用户

if [= = '--add ']; Then

For I in ' echo $ | Sed ' s/,//g '; Do

if! ID $I &>/dev/null; Then

Useradd $I

echo $I | passwd--stdin $I &>/dev/null

echo "Add $I successfully"

Else

echo "$I Exist"

Fi

Done

#以下蓝色部分是用来判断是否删除用户

elif [= = '--del ']; Then

For I in ' echo $ | Sed ' s/,//g '; Do

If ID $I &>/dev/null; Then

Userdel-r $I

echo "Delete $I finishing"

Else

echo "$I not Exist"

Fi

Done

#以下黑色部分是用来判断是否寻求帮助信息

elif [= = '--help ']; Then

echo "./admuser.sh--add user1,user2...|. /admuser.sh--del User1,user2,... | ./admuser.sh--help "

Else

echo "ARGs is error,please Usage:--help"

Fi

The following script executes the test effect:

./ADMUSERADV--add User1,user2,user3 added 3 users

650) this.width=650; "src=" Http://s5.51cto.com/wyfs02/M00/7F/11/wKiom1cR1zGQxmnDAADLv21IAJk286.jpg "title=" Adduser.jpg "alt=" wkiom1cr1zgqxmndaadlv21iajk286.jpg "/>

./admuseradv  --del   USER1,USER2,USER3     Deletion of 3 users

650) this.width=650; "src=" Http://s2.51cto.com/wyfs02/M01/7F/0E/wKioL1cR2ArBLVGNAADTUTxr88k533.jpg "title=" Deluser.jpg "alt=" wkiol1cr2arblvgnaadtutxr88k533.jpg "/>

650) this.width=650; "src=" Http://s5.51cto.com/wyfs02/M02/7F/11/wKiom1cR16iQ3Av7AACRq6FruD0836.jpg "title=" Error.jpg "alt=" Wkiom1cr16iq3av7aacrq6frud0836.jpg "/>

This article is from the "Xavier Willow" blog, please be sure to keep this source http://willow.blog.51cto.com/6574604/1764400

Linux under Bash programming combination test and scripting (v)