Which command allows a user to change their password?

Which command allows a user to change their password?

• A. whoami
• B. ping
• C. passwd
• D. stat

Answer: (C)

The command that allows a user to change their password is "passwd." This command is commonly used in Unix and Linux systems. When executed, it prompts the user to enter their current password followed by the new password they would like to set. It is an essential tool for managing user authentication and security. The other commands serve different purposes; for instance, "whoami" is used to display the current user's username, "ping" is a network utility used to check the reachability of a host on a network and measure the round-trip time for messages sent, and "stat" is used to display information about a file or file system. These commands do not have the capability to change a user's password, which is why they are not the correct choice for this situation.

The command that allows a user to change their password is "passwd." This command is commonly used in Unix and Linux systems. When executed, it prompts the user to enter their current password followed by the new password they would like to set. It is an essential tool for managing user authentication and security.

The other commands serve different purposes; for instance, "whoami" is used to display the current user's username, "ping" is a network utility used to check the reachability of a host on a network and measure the round-trip time for messages sent, and "stat" is used to display information about a file or file system. These commands do not have the capability to change a user's password, which is why they are not the correct choice for this situation.