What command can be used to change the password policies for a user?

The command "chage" is specifically designed for managing user password expiration and aging settings in Linux. By using chage, an administrator can set policies that dictate how long a password is valid, how often a user must change their password, and other related settings. This command allows for fine-tuning the security and operational policies surrounding user accounts, making it the right choice for adjusting password policies.

While the "passwd" command is used for changing a user's password, it does not handle password policy configurations—its primary function is to set or update the actual password. Conversely, "changeage" is not a recognized command in Linux, and therefore, cannot be used for any purpose related to password policies.

In some cases, administrators may prefer to edit specific configuration files to define password policies system-wide. However, this approach is less direct and less user-friendly compared to using chage, which provides an interactive interface for configuring individual user accounts for password management.

Thus, chage is the most suitable command for changing password policies for users, allowing system administrators to enforce security practices efficiently.