**Reason When Linux is installed onto your system, the sudo command is installed by default as well. Sometimes, due to some issues, the sudo tool might not exist on your system or may get removed.

Solution Installing the command onto your system is the most suitable method to resolve the error. Firstly to do this you need to enter root user mode. Run this statement in the terminal to enter into root user mode:

$ su -

Now update your repository: Once the repository is updated, use the following command to install the sudo command on the system:

# apt install sudo

Reference: https://itslinuxfoss.com/sudo-command-not-found/

Thank you

Reason When Linux is installed onto your system, the sudo command is installed by default as well. Sometimes, due to some issues, the sudo tool might not exist on your system or may get removed.

Solution Installing the command onto your system is the most suitable method to resolve the error. Firstly to do this you need to enter root user mode. Run this statement in the terminal to enter into root user mode:

$ su -

Now update your repository: Once the repository is updated, use the following command to install the sudo command on the system:

# apt install sudo

Reference: https://itslinuxfoss.com/sudo-command-not-found/

Thank you