Shulou(Shulou.com)06/03 Report--

Linux environment:

1. Write a file: passwd.list. The goal is for computers to recognize user names.

vi passwd.list

#!/ bin/sh

sum=1

while [ $sum -le 100 ]

do

echo "user$sum::'expr $sum + 100':'expr $sum +100'::/home/user$sum:/bin/sh\n" >> /etc/passwd

sum='expr $sum + 1'

done

:wq!

This will generate the passwd.list file, but in this case, it is not executable, to execute, you need to do the following work:

# chmod 777 passwd.list

(chmod for Grant Permission Command, 777 for Everyone Can Have Permission)

# ./ passwd.list

(To be executed in the directory where the file is located)

passwd.list adds 100 users from user1 to user100 to the/etc/passwd file.

In this example, the user name is: user1----user100

User ID: n+100 (the number following no user, i.e., the user ID of user1 is 101)

Group ID: Same as user ID.

Note: 1) In Linux 7.0, this example:

echo "user$sum::`expr $sum + 100`:`expr $sum +100`::/home/user$sum:/bin/sh\n" >> /etc/passwd changed to:

echo "user$sum::`expr $sum + 100`:`expr $sum +100`::/home/user$sum:/bin/sh" >> /etc/passwd

2)"There must be no blank space behind it, otherwise the system will not recognize the user name."

3)$sum spaces + spaces 100 (spaces must be present)

4)`is the key to the left of number 1 on the keyboard, not the key to the right of L

2. Write the file shadow.list to modify the real passwords of users under/etc/shadow.

Vi shadow.list

#!/ bin/sh

sum=1

while [ $sum -le 100 ]

do

echo "user$sum::::::::\n" >> /etc/shadow

sum='expr $sum + 1'

done

:wq!

This will generate a shadow.list file, but at this time, it is not executable, to execute, you need to do the following work:

# chmod 777 shadow.list

# ./ shadow.list

In this way, shadow.list changes the user's password, in this case, set to empty, no password.

Note: 1) In "user$sum::::::\n",: is 8

2)$sum spaces + spaces 1

3) Note the key

3. Generate a dir.list file, the purpose is to establish the user's corresponding host directory, that is, the directory.

Vi dir.list

cd /home

sum=1

while [ $sum -le 100 ]

do

mkdir user$sum

sum='expr $sum + 1'

done

chown user$sum user$sum

:wq!

# chmod 777 dir.list

#./ dir.list

Note: Same as 1.2

********* Note: If the system is Solaris, 1.3 in the above file is different. As follows:

1. Vi passwd.list

#!/ bin/sh

sum=1

whole [ $sum + 1 ]

do

echo "user$sum::`expr $sum + 100`:`expr $sum +100`::/export/home/user$sum:/bin/sh\n" >> /etc/passwd

sum=`expr $sum + 1`

done

:wq!

3. Vi dir.list

cd /export/home

sum=1

while [ $sum -le 100 ]

do

mkdir user$sum

sum=`expr $sum + 1`

chown user$sum user$sum

done

:wq!

# chmod 777 dir.list

#./ dir.list

After the completion of the implementation, Solaris system login, you enter the user name, it will prompt you to set a password, click OK, re-set the password, and then re-login, you can enter.

Linux system after entering the user name, both can directly enter the system.

This example is used for batch establishment of users, and the password is empty. I am also in such a need, learn to write their own, inevitably have a proper place, please correct me. Progress together.

Viking_lee

cd /home

sum=1

while [ $sum \u2013le 100 ]

do

mkdir user$sum

sum='expr $sum + 1'

done

chown user$sum user$sum

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