You can use the PS (process status) utility to display the PID numbers of running commands.
Both the ps command and the jobs command will do this, though in somewhat different ways.
kill pid
Type top in a terminal to display Linux processes, which includes PID.
A PID is a process ID. It is generally a 15 bit number, and it identifies a process or a thread.
Open a terminal (short cut is to press Ctrl + Alt + T) and type "top" (without the quotes) to show running processes and PIDs. Or you can type "htop", so have a look at both.
In reference to Linux, PID is Process Identification Number.3 digit number on the back of credit cards.In unix systems, a PID is a process ID. It is generally a 15 bit number, and it identifies a process or a thread.
Exactly what the name says: It displays and sets the date on a Linux system.
The whoami command.
A package manager is a utility to install remove, upgrade, and track the dependencies of software in Linux.
getmacGetmac
No, it's an operating system kernel.