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Old 09-07-2004, 03:02 AM   #1
hindll01
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Registered: Sep 2004
Location: New Zealand
Distribution: Fedora Core 1
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Can't add new users from an input file


I need to write a shell script to add a list of newusers in the below format

usernameassword:groupname:fullname

I am really new at Linux (Fedora Core 1), could anybody please give me a hand?

I am having trouble with
1) reading from the input file
2) saving the new users' information into the correct files

Last edited by hindll01; 09-07-2004 at 03:04 AM.
 
Old 09-07-2004, 05:08 AM   #2
gizmo_thunder
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what do you mean by add new users??
do you want to add users to the system??
or just take some input and write a file??
 
Old 09-07-2004, 05:46 AM   #3
CroMagnon
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Your input file is in this format:

usernameassword:groupname:fullname

and you need to add these users to the system, is that right?

First thing to do in your script would be:
IFS=\015
this sets the 'splitting' character to \n, so you can work with lines that have spaces. Then you could do something like this:
for x in `cat userlist.txt`
do
USER=`echo $x | cut -f 1 -d:`
PW=`echo $x | cut -f 2 -d:`
GRP=`echo $x | cut -f 3 -d:`
NAME=`echo $x | cut -f 4 -d:`
xxxx
done

The lines xxxx are the ones I can't be sure of as I don't use Redhat, but check your man pages for scripts like adduser or useradd, addgroup or groupadd. To set the passwords, you might need to install expect or find a tool that sets passwords from the command line.
 
Old 09-07-2004, 06:12 PM   #4
hindll01
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Registered: Sep 2004
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Can't add new users

Yes, I have to add new users to the system from a list of user from an input file that is formatted like this;

username:password:groupname:fullname
username:password:groupname:fullname
username:password:groupname:fullname

and so on...


I have also noticed that when a new user is added to the system their groupname is automatically created using their username.

How can I stop this??
 
Old 09-07-2004, 07:32 PM   #5
CroMagnon
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Check the man page for useradd, you should find the help you need there.

This worked for me:

useradd -g (default group) (other options) username
e.g, to add a user 'fred' using the group 'users' (so it won't create a fred group)
useradd -g users fred
 
  


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