gzip
This package creates a .gz compressed file, much like .rar or .zip.
Compression
gzip <file> - Compress a file. Deletes original file.
gzip -k <file> - Compress without deletion.
gzip -9 <file> - Compression quality 1-9. Default is 5.
Extraction
gzip -d <file> or gunzip <file>- Extract.