Shell Example

Requirement 1: follow the file to add user and set password

File name: user_passwd

File content: 

aaa 123456

bbb 123456

ccc 123456

Program 1: 1.sh

#!/bin/bash

for I in `cut -d' ' -f1 $1`

do

useradd $I

P=$(grep $I $1 | cut -d' ' -f2)

echo $P | passwd $I --stdin

done

Execute: ./1.sh user_passwd

Program 2: 2.sh

#!/bin/bash

cat $1|while read username password

do

useradd $username

echo $password|passwd --stdin $username

done

Execute: ./2.sh user_passwd

Requirement 2: follow the file to delete user

File name: user_passwd

File content: 

aaa 123456

bbb 123456

ccc 123456

Program: 3.sh

#!/bin/bash

for I in `cut -d' ' -f1 $1`

do

userdel -r $I && echo "delete user $I"

done

Execute: ./3.sh user_passwd