sunflower% ls
bin                     inv.mag                 magic-7.2.39
doc                     inv.sim                 magic-7.2.39.tar
fpga.cmd                inverter.cmd            man
fpga.ext                inverter.ext            nand2.cmd
fpga.mag                inverter.mag            nand2.ext
fpga.sim                inverter.sim            nand2.mag
installation            irsim-9.6.4             nand2.sim
inv.cmd                 irsim-9.6.4.tar         nsmail
inv.ext                 lib                     tclspice-0.2.11.tar.gz
sunflower% tar -zxf tclspice-0.2.11.tar.gz
tar: z: unknown option
Usage: tar {txruc}[vfbFXhiBEelmopwnq[0-7]] [-k size] [tapefile] [blocksize] [exclude-file] [-I include-file] files ...
sunflower% re xvf tclspice-0.2.11.tar.gz
re: Command not found
sunflower% tar xvf tclspice-0.2.11.tar.gz
tar: directory checksum error
sunflower%