handle packing/unpacking/compressing/uncompressing of .tar containers

EXAMPLES
	tar -tzf file.tar.gz
		list the contents of the gzipped .tar container file.tar.gz
	tar -xzf file.tar.gz
		uncompress and unpack the gzipped .tar container file.tar.gz
	tar -czf file.tar.gz *.txt
		create a gzipped .tar container file.tar.gz from all .txt files in .
	tar -czf file.tar.gz dir/
		create a gzipped .tar container file.tar.gz from the entire directory ./dir/

FLAGS
	-t	list contents of a .tar container
	-f	indicate the file you want to work with (either to create or to unpack)
	-z	use gzip (either to compress or uncompress)
	-x	extract a .tar container
	-c	create a new .tar container
