How do I become admin in Linux?

You need to use any one of the following command to log in as superuser / root user on Linux:

1. su command – Run a command with substitute user and group ID in Linux.
2. sudo command – Execute a command as another user on Linux.

How do I run a terminal as administrator in Linux?

How to Open Root Terminal in Linux Mint

1. Open your terminal app.
2. Type the following command: sudo su.
3. Enter your password when prompted.
4. From now, the current instance will be the root terminal.