How to change username & password of linux kernel

Hi Sekra,

You could use commands like useradd or adduser for the new user and passwd for the password. This is generic Linux topic and you could search the Internet for guides how to configure this properly and according to your desires.

Thank you.

BR
Vladimir

Hai Vladimir

Thanks for the reply.Commands were fine.I know its working.But actually i want to how the commands working

So i check the /etc/passwd file for that.Hence i changed the username( logname) and the password is encrypted here.How it works?i want to know that vladimir??

my /etc/passwd file shows

root:5tyerSW2gbmxjOWQ9i:0:0:root:/home/root:/bin/sh

Please cud you refer this links:

http://en.wikipedia.org/wiki/Passwd

Hi,

On a linux machine, install makepasswd (sudo apt-get install makepasswd) 

Then type : 

echo "the_password_string_you_want" | makepasswd --clearfrom=- --crypt-md5 |awk '{ print $2 }'

It will print you the encrypted password.

Then copy this string to your /etc/passwd

I should work

Regards

ADB

Hai

i tried that thing in my linux desktop.so here my password is slander5.When i set that password,the encrypted would be differ as below,it shows in terminal.Is it right???How it could varies?its same same encryption technique or multiple encryptions were in linux.???

lm@embapp-build:~$ echo slander5 | makepasswd --clearfrom=- --crypt-md5 |awk '{ print $2 }'
$1$UB30avBE$0bzdR2HeIwo2U.Pi4NSoc1
lm@embapp-build:~$ echo slander5 | makepasswd --clearfrom=- --crypt-md5 |awk '{ print $2 }'
$1$b.WwkS3q$3IZRZCNr5Da7SlgPDma8a1
lm@embapp-build:~$ echo slander5 | makepasswd --clearfrom=- --crypt-md5 |awk '{ print $2 }'
$1$HiCb7u6G$LITUSjJWWFWjm.sjlGjvx1
lm@embapp-build:~$ echo slander5 | makepasswd --clearfrom=- --crypt-md5 |awk '{ print $2 }'
$1$31mpe1vJ$6y3hgIhF1e9XGortvOwGT.
lm@embapp-build:~$ echo slander5 | makepasswd --clearfrom=- --crypt-md5 |awk '{ print $2 }'
$1$5ytR/jL.$ZpfPBfSHlF0ILwquLcLaM0
lm@embapp-build:~$

Reply me.Thanks in advance

Hi,

I do not know how it works in the background but It is normal as far as it generate a pseudo random key :

http://manpages.ubuntu.com/manpages/dapper/man1/makepasswd.1.html

Try, you will see that it works.

Regards