What command is used to change the password for a user on Junos OS if you have a new, unencrypted password?

In Junos OS, when you need to set a new, unencrypted password for a user, the correct command to use is "plain-text-password." This command prompts you to enter the new password in plain text, allowing for the immediate and secure update of the user's password without any encryption or additional processing.

Utilizing this command is critical when administrators need to directly input a password in a readable format, as it simplifies the process of managing user accounts and ensures that passwords can be set effectively during configuration sessions. This command also emphasizes the ease of use in the CLI environment provided by Junos OS for administrative tasks.

Other options do not apply to the desired action: some suggest using a non-existent command, or they refer to command structures that don’t align with the operational context in configuring user passwords on Junos. Hence, "plain-text-password" is specifically designed for this scenario, making it the right choice for changing user passwords.