tgmk% ls
Example.zip
tgmk% gunzip Example.zip
gunzip: Example.zip: unknown suffix -- ignored
tgmk% tar -xvf Example.zip
tar: directory checksum error
tgmk% tar -zxvf Example.zip
tar: z: unknown option
Usage: tar {txruc}[vfbFXhiBEelmopwnq[0-7]] [-k size] [tapefile] [blocksize] [exclude-file] [-I include-file] f
iles ...