The GZIP File Format

Also known as: GZ, TGZ

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Original Documentation

The GNU ZIP program is an archive program mostly for the UNIX machines developed
by the GNU project.
OFFSET              Count TYPE   Description
0000h                   2 char   ID='!',139
0002h                   1 byte   Method :
								 0-7 - reserved
								   8 - deflated
0003h                   1 byte   File flags :
								   0 - ASCII-text
								   1 - Multi-part file
								   2 - Name present
								   3 - Comment present
								   4 - Encrypted
								 5-8 - reserved
0004h                   1 dword  File date and time (see table 0009)
0008h                   1 byte   Extra flags
0009h                   1 byte   Target OS :
								   0 - DOS
								   1 - Amiga
								   2 - VMS
								   3 - Unix
								   4 - ????
								   5 - Atari
								   6 - OS/2
								   7 - MacOS
								  10 - TOPS-20
								  11 - Win/32
EXTENSION:ZIP
PROGRAMS:GNU gzip

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