Jordan Gloor / How-To Geek If your GRUB shells shows a “grub>” prompt, you can use the ls, set, linux, and initrd commands to fix your Linux system. If instead you see a “grub rescue>” prompt, use set, insmod, linux, ...

Napier Lopez / How-To Geek To fix the “make: command not found” error on Ubuntu Linux, you will need to install make. To install make, run the “sudo apt install make” command or, to install the standard development tools at ...