Some useful key extensions

An extension is a name prefix that indicates a file type. Some extensions are :

.bmp        Bitmap graphic file

.conf        Configuration file

.db           Database file

.dvi          Device-independent TeX file

.gif           GIF graphics file

.gz            File compressed using the GNU gzip utility file 

.html        Hypertext Markup Language file

.jpg          JPEG graphics file

.o             Compiled object file

.pdf          Adobe Acrobat file

.ps           PostScript file

.s             Assembler languge file

.tar          tar file

.tgz          Gzipped tar file

.tif           TIFF graphics file 

.txt          Text document file

.z             Compressed file using the compress command