The following tools can be used to compress, decompress, and archive files:
bzip2
Compresses files.
bzip2recover
Recovers data from corrupted bzip2-compressed files.
bzcat
Displays contents of compressed files.
bunzip2
Uncompresses a files that was compressed with bzip2.
compress
Compresses files to free up space (use gzip instead).
cpio
Copies archives in or out.
gnutar
GNU version of tar; available only if you have installed the Developer Tools package.
gunzip
Uncompresses a file that was compressed with gzip.
gzcat
gzip
Compresses a file with Lempel-Ziv encoding.
tar
Tape archive tool. GNU tar has more features and fewer limitations.
uncompress
Expands compressed (.Z) files.
zcat