Process Group ID.
A process Group is formed when we couple multiple processes together .
e.g. from command line. $ ls | more
Here, ls & more will have the same PGID.
It stands for Red Hat Package Manager, which is a package management system that will run on Linux.
FTP stands for File Transfer Protocol
LILO? It stands for LInux LOader, is the bootloader for Linux. It allows you to select which installed operating system you want to load.
LAMP stands for Linux-Apache-MySQL-PHP. In simpler terms it contains everything to build a php application on a linux platform.
visual interactive
Linux does not technically stand for anything. It's name was originally created as a shortened form of "Linus's Minix." As this is not really technically accurate, and Linux has grown far beyond Minix in popularity, the name stands as a word in its own right.
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In the context of the Linux command 'mv r', the keyword 'mv' stands for 'move', indicating that the command is used to move or rename files or directories.
NAT stands for Network Address Translation. The term "NAT" is the same across all computing platforms.
The accronym "GNU" stands for Gnu Is not Unix. Technically speaking, it's "GNU/Linux" because Linux is the kernel, not the whole thing, we just shorten it to Linux (I do this myself, but I do know that Linux is just the kernel). It is made up of the Linux kernel and several GNU programs (try typing a basic command into a terminal with --help, chances are you could easily find one that says GNU somewhere at the bottom).
Var directory is a sub directory of the root directory, The system writes data during process of its operation.
I think you mean chgrp. It stands for change group. you use it thusly: chgrp groupname target1<target2, target 3,...>