This is a perl script for adding user and group accounts in batch under linux, It is released under the terms of the GNU Public License
In fact, there is already a newusers command from shadow-utils which can do this. However, it requires the input file to be in the format of passwd(5).As a result, I must manually specify the uid,gid,shell,…etc for the user to be created,that’s boring ! It will be better if I can make the system choose such info for me,like the useradd command.So I write this script.
To add groups, you just need to place the group name in a file,one group per line
To add users, you just need to place user info in a file, one per line,with the format:
login:user name:primary group:supplementary groups
Note: primary group and supplementary groups may be omitted,but the the colon(:) must be kept.
An example users file:
#file: users.txt user1:Test user1:group1:other_group1,othergroup_2 user2:Test user2:group2: user3:Test user3::
An example groups file:
#file: groups.txt group1 group2 group3 other_group1 othergroup_2
then, run this script,pass it the user file, or group file, add a default password for all new users:
./add_users.pl --userfile=users.txt --groupfile=groups.txt --password=secret
You can download it from here