For every user account created, there is a corresponding single-line entry in /etc/passwd file, which is further divided in seven fields.
There are times when we don't want our BASH history file to be written. For such a scenario, we can use history -c command in Ubuntu.
The default number of command that it stores is 1000. In this article, we cover how to modify BASH File History size in Ubuntu.
Change passwords at regular intervals. And, we can make users change their password periodically in Ubuntu using chage and passwd utilities.
The time interval between two password changes can be set by System Admin. But, before that warn the user about password change in Ubuntu.
We have come across users, who don't change their passwords at all. Make such users change password at next login in Ubuntu.
Once a user account is created - its attributes can be modified later through usermod. We cover how to modify users with usermod in Ubuntu.