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/etc/passwd in Ubuntu

For every user account created, there is a corresponding single-line entry in /etc/passwd file, which is further divided in seven fields.

history -c command in Ubuntu

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.

history -w command in Ubuntu

Everything we type in the Shell ultimately gets stored in BASH history file. Here, we cover how the basics of history -w command in Ubuntu.

Modify BASH File History size 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.

Minimum days between password changes in Ubuntu

A user should be allowed to change password any at point in time. Here, we cover how to set minimum days between password changes in Ubuntu.

Make users change their password periodically in Ubuntu

Change passwords at regular intervals. And, we can make users change their password periodically in Ubuntu using chage and passwd utilities.

Warn the user about password change in Ubuntu

The time interval between two password changes can be set by System Admin. But, before that warn the user about password change in Ubuntu.

Make users change their password at next login 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.

Modify users with usermod 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.

Update user account information in Ubuntu

Once a user is created, we may want to update his/her user account information in Ubuntu for various reasons.