Everything that’s running on a Linux system – a service, script, or anything else – is considered a “process”. If you need to end a running process on Linux, the kill command is sure to do the job.
How to fix a “Command not found” error in Linux
When you’re trying to run a command (with or without sudo) and get an error message that reads “Command not found“, this means the script or file you’re trying to execute doesn’t exist in the location specified by your PATH variable. What is this variable, and how can you run commands that it can’t find?
