5 Simple Linux user modification methods on linux with /etc/passwd file.

For demo purpose I have created uxtechno user. The respective entry in “/etc/passwd” is as below:

[root@kalwa1 ~]# cat /etc/passwd|grep -i uxtechno
uxtechno:x:500:500::/home/uxtechno:/bin/bash
[root@kalwa1 ~]#

1. Put comment in “/etc/passwd” for the entry of uxtechno.

[root@kalwa1 ~]# cat /etc/passwd|grep -i uxtechno
#uxtechno:x:500:500::/home/uxtechno:/bin/bash
[root@kalwa1 ~]#

This change makes the user uxtechno unable to login with the system. System will simple say user does not exit.

[root@kalwa1 ~]# su - uxtechno
su: user uxtechno does not exist
[root@kalwa1 ~]#