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Full Discussion: Useradd issue
Operating Systems Linux Red Hat Useradd issue Post 302410157 by maverick_here on Monday 5th of April 2010 06:23:38 AM
Old 04-05-2010
Useradd issue
Hi all,

I'm using Red Hat Enterprise Linux Server release 5 (Tikanga)

I have a query regarding adding users, I have a requirement of creating multiple users at one go.
In order to do so I have written a shell script which would create a user and set the password at one go.
Now the problem is

1] Setting password.

I have tried two approcahes

Code:
password=`echo "PASSWORDSTRING"|md5sum`

useradd -p $password $username

and

Code:
pass=$(perl -e 'print crypt($ARGV[0], "password")' $password)

useradd -p $pass $username

In both the cases I'm able to create user without a problem.How ever when i try to login as the user Im unabel to as the password is in correct.

Following is the script

Code:
if [ $(id -u) -eq 0 ]
then
cat /root/newlis|while read IN
do
        username=`echo $IN|awk -F ":" '{print $2}'`
        password=`echo $IN|awk -F ":" '{print $3}'`
        egrep "^$username" /etc/passwd >/dev/null
if [ $? -eq 0 ]
then
echo "$username exists!"
exit 1
else
pass=$(perl -e 'print crypt($ARGV[0], "password")' $password)
useradd -m -p $pass $username
grep "$username" /etc/passwd >/dev/null 2>&1
if [ $? -eq 0 ]
then
echo "User $username added" >> /root/user.log
else
echo "Problem adding $username"
fi
fi
done
else
echo "Only root may add a user to the system"
        exit 2
fi


Please suggest.

Thanks and Regards
Syed

---------- Post updated at 03:53 PM ---------- Previous update was at 03:13 PM ----------

Well ,the intresting thing is the passwords are valid as I m doing as follows

I m logged in as root so I am

Code:
su - newuser

passwd

it asks me for old pasword and then lets me change the pasword without any errors.Which means the password assigned by the script is OK ,its only that iam unable to login for some reason.
Last edited by pludi; 04-05-2010 at 08:20 AM.. Reason: code tags, please...
 

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LEARN ABOUT ULTRIX

su

su(1)							      General Commands Manual							     su(1)

Name
       su - substitute a user ID

Syntax
       su [username]

       su - [username]

       su -f [username]

Description
       The  command  requests the password of the specified username.  If the correct password is given, changes to that username without changing
       the current directory.  The user environment is unchanged except for HOME and SHELL which are taken from the password file entry for  user-
       name.   The  shell  that  is  run  is also taken from the password file entry for username.  The new user ID stays in force until the shell
       exits.

       If no username is specified, `root' is assumed.	To remind the superuser of his responsibilities, the shell substitutes `#' for	its  usual
       prompt.

Options
       -f   Prevents from executing the .cshrc file, making start up faster.

       -    Simulates a full login.

Diagnostics
       Sorry
	    An invalid password was supplied for the specified username.

       Unknown login: username
	    The specified username was not found in the passwd database.

       No directory
	    The home directory for the username is not accessible at this time (only with ``-'' argument).

       No shell
	    The shell specified in the passwd database entry for username could not be executed.

       Kerberos initialization failure
	    Consult your system administrator.

       If enhanced security features are enabled the following error messages are also possible:

       Requires secure terminal
	    Attempt to su to UID 0 on a line that is not marked secure in

       User's password has expired
	    Access is denied because the password for username is expired.

       This account is disabled
	    Access is denied because the auth entry corresponding to username is marked disabled.

Files
       Log file of anyone who became
			root, with a date mark.

See Also
       csh(1), sh(1), passwd(5yp), environ(7), edauth(8)
       Security Guide for Administrators
       Security Guide for Users

																	     su(1)
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