Mass production users in UNIX environment
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
