COMPRESSION UTILITIES
-----------------------



o Command gzip/gunzip

	gzip myfile		# myfile -> myfile.gz
	gzip -d myfile.gz	# myfile.gz -> myfile
	gzip -dc myfile.gz	# write to standard output, 
				  keep original files unchanged
o Command bzip2/bunzip2

	Same of gzip. See gzip --help o bzip2 --help


TAR
-----------

Warning: muLinux "tar" is only a small GNU/tar substitute (pax, from
Mark H. Colburn). Support main tar switch ( -cfxvt ) but not -C and -z.
Uncompress to stdin with gzip, instead. "pax" support multi-volume. 

o Archiving with TAR

	tar -cf my.tar file1 file2 /dir		# create archive
	tar -uf my.tar file1			# update
	tar -cf - files ... > my.tar		# create to stdout
	
o Un-archiving with TAR

	cd /some/dir
	tar  -xf /path/my.tar 			# extract to /some/dir

	cat my.tgz | gzip -dc | tar -zxf -	# via pipe

