Linux File System Basics

Files are entities for storing data in a computer system. There are many types of files: various data files and programs; even devices are represented as files. File name extensions are a convenience for the user – the operating system does not derive any meaning from it

Some common extensions include:

.bz2: File zipped with the bzip2 utility

.c: C source code file

.gif/.jpg/.png: Image files (GIF / JPEG / PNG)

.gz: File zipped with the gzip utility

Common extensions (cont.):

.html: Web page

.mp3: MP3 audio file

.pdf: PDF document format

.pl: Perl script

.rpm: RedHat software package

.odt: OpenOffice.org files (writer / calc / impress / draw)

.tar: Archive created with the tar utility

.txt: Plain text file

.zip: File compressed with the zip utility