Automatic useradd and password

[mvvilleza]

Hi all,

I have a list of usernames saved in a file. Can anyone help me how I can read this file to auto-create the usernames and assign an auto-generated password where this password will be saved to a file?

Thanks for the help guys.

 

[thedaver]

You could use perl or bash... some rough perl would look like this:

#!/usr/bin/perl -w
# I borrowed the following routine to generate a random string from the author credited
###########################################################
# Written by Guy Malachi [URL unfurl="true"]http://guymal.com[/URL]
# 18 August, 2002
###########################################################

# This function generates random strings of a given length
sub generate_random_string
{
	my $length_of_randomstring=shift;# the length of 
			 # the random string to generate

	my @chars=('a'..'z','A'..'Z','0'..'9','_');
	my $random_string;
	foreach (1..$length_of_randomstring) 
	{
		# rand @chars will generate a random 
		# number between 0 and scalar @chars
		$random_string.=$chars[rand @chars];
	}
	return $random_string;
}

open (FOUT,">passwordlist.txt");
# My code now.  Save the perl code as "massuseradd.pl"
# Call this perl program with
# perl massuseradd.pl < listofusernames.txt
while (<>) {
  print "Processing Account Name: $_\n";
  print "Creating Group: $_\n";
  exec ("groupadd $_");
  print "Creating User: $_\n";
  exec ("useradd -G $_ $_");
# Generate the random string
  my $random_string=&generate_random_string(11);
  print "Setting Password for user: $_\n";
  print "You need to copy/paste or enter the password: $random_string\n";
  exec ("passwd $_");
  print FOUT "$_ --- $random_string";
  print "Done with user: $_\n---\n";
}
close FOUT;

# NOTE: This uses untested code and EXTREMELY POOR SECURITY PRACTICES.
# It is very bad to write out a master text file of users and passwords
# It is also very bad practice for the admin to see/enter every new password.

Please, no flames on the security merit of this hack. I know it's dangerous stuff. Also, no flames from the bash crowd - I'm more comfortable in perl.

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[mvvilleza]

Thanks for the reply,

I already have a solution, downloaded passgen package and then created a script. Something like :
#!/bin/bash
for j in $(cat /root/userlist.txt); do
PASS=`/usr/local/bin/passgen`
echo $PASS >> password.txt
echo $PASS|passwd --stdin $j
done

Again thanks