[SOLVED] useradd problem

Arjun · 08-01-2012, 01:18 AM

I want to create a new user in my system. So i am using this command

Code:

useradd Arjun -p toor

The user gets created but when i login as Arjun then it says incorrect password.

When i see /etc/shadow file, i see that root password is strongly encrypted but Arjun's password written as plain text.

What wrong i am doing ?

Thanks

evo2 · 08-01-2012, 01:30 AM

Hi,

the -p option is supposed not supposed to take the password as the argument, but the crypt of the password. There are commandline programs that can return this, but it is probably better just to set it after adding the user.

Eg as root

Code:

useradd arjun
passwd arjun

Also, depending on what distro this is you may have the higher level tool, adduser, which you may find more user friendly.

Evo2.

SIG_SEGV · 08-01-2012, 01:31 AM

I think this procedure works better...

#adduser Arjun
#passwd Arjun

because -p option isn't recommended actually... refer 'man useradd'

Arjun · 08-01-2012, 01:49 AM

ok

i will try with it too

ThaNks

TroN-0074 · 08-01-2012, 06:20 AM

Code:

# useradd -m -g users -G audio,games,log,lp,optical,power,scanner,storage,video,wheel -s /bin/bash Arjun

Then issue

Code:

passwd Arjun

and type the password you want to use.

chrism01 · 08-01-2012, 06:42 PM

Another option is

Code:

echo plaintextpasswd | passwd --stdin username

This will encrypt the passwd as well as set it; handy for bulk processing

Arjun · 08-05-2012, 03:44 AM

Quote:

Originally Posted by evo2

Hi,

the -p option is supposed not supposed to take the password as the argument, but the crypt of the password. There are commandline programs that can return this, but it is probably better just to set it after adding the user.

Eg as root

Code:

useradd arjun
passwd arjun

Also, depending on what distro this is you may have the higher level tool, adduser, which you may find more user friendly.

Evo2.

Thanks, worked successfully

Quote:

Originally Posted by SIG_SEGV

I think this procedure works better...

#adduser Arjun
#passwd Arjun

because -p option isn't recommended actually... refer 'man useradd'

Thanks, this one works good too

Quote:

Originally Posted by TroN-0074

Code:

# useradd -m -g users -G audio,games,log,lp,optical,power,scanner,storage,video,wheel -s /bin/bash Arjun

Then issue

Code:

passwd Arjun

and type the password you want to use.

Giving error on execution of this command

Code:

useradd: group 'log' does not exist
useradd: group 'optical' does not exist
useradd: group 'power' does not exist
useradd: group 'storage' does not exist
useradd: group 'wheel' does not exist
zsh: exit 6     useradd -m -g users -G  -s /bin/bash Arjun

Can you tell me what we are doing in this command ?

Thanks

Quote:

Originally Posted by chrism01

Another option is

Code:

echo plaintextpasswd | passwd --stdin username

This will encrypt the passwd as well as set it; handy for bulk processing

Giving error on executing this command

Code:

echo toor | passwd --stdin Arjun

Error:

Code:

passwd: unrecognized option '--stdin'

Nylex · 08-05-2012, 03:50 AM

Quote:

Originally Posted by Arjun

Giving error on execution of this command

Code:

useradd: group 'log' does not exist
useradd: group 'optical' does not exist
useradd: group 'power' does not exist
useradd: group 'storage' does not exist
useradd: group 'wheel' does not exist
zsh: exit 6     useradd -m -g users -G  -s /bin/bash Arjun

Can you tell me what we are doing in this command ?

Obviously the groups you want to add a user to must exist on the system. Presumably, TroN-0074 was simply giving an example of how to add a user to multiple groups when running useradd.

Quote:

Giving error on executing this command

Code:

echo toor | passwd --stdin Arjun

Error:

Code:

passwd: unrecognized option '--stdin'

Different systems may use different versions or implementations of a given program, so you should check the man page on your system to see which options are supported. On my system, the man page doesn't mention a "--stdin" option, so I wouldn't try it there.

chrism01 · 08-05-2012, 07:35 PM

Is this for the backtrack distro?: --stdin works on RHEL/Fedora & see http://linux.die.net/man/1/passwd

qweeak · 08-05-2012, 11:33 PM

Try using "adduser" command. This will ask for details in interactive mode. man adduser for details