Hi to everyone

Could anyone guide me how to make a system user password less in Linux?


Thanks in advance.

use the command
# passwd -d username
then you are able to login without password.

go to /etc/shadow
and remove the md5 algorithm
make sure colens ( : ) are intact | do not remove them.

Hi

Thanks for the response.

I have tried both options got, when i tried "passwd-d username",
it will simply delete the encrypted password information form /etc/shadow.

[root@pas-3 ~]# useradd aisa
[root@pas-3 ~]# passwd -d aisa
Removing password for user aisa.
passwd: Success


[root@pas-3 ~]# grep aisa /etc/passwd
aisa:x:55019:55019::/home/aisa:/bin/bash
[root@pas-3 ~]# grep aisa /etc/shadow
aisa::14210:0:99999:7:::

But when i tried to login nothing worked:
login as: aisa
aisa@146.223.126.36's password:
Access denied
aisa@146.223.126.36's password:



Any suggestion.
Thanks.

check if chattr is on
delete the user create it again and then
go to etc/shadow
remove the md5 algor.... and it will work as passwdless authen....

Why do you need to have a user without password? It will most likely be a medium for your system to be hacked.

btw which distro you are using, i tried the following on ubuntu its still giving me as auth failure but in rhel5 its working with no issues.

Follow this procedure is you want a passwordless ssh/scp from a remote host.

1. local> ssh-keygen -t dsa -b 2048 -f .ssh/id_dsa
2. local> cd .ssh
3. local> scp id_dsa.pub user@remote:~/.ssh/id_dsa.pub
4. local> ssh user@remote
5. remote> cd .ssh
6. remote> cat id_dsa.pub >> authorized_keys2
7. remote> chmod 640 authorized_keys2
8. remote> rm id_dsa.pub