pack, pcat, unpack - compress and expand files
In Oracle Solaris 11.3 and earlier releases, the pack, pcat, and unpack commands were used to compress and expand files using Huffman coding in the pack format (typically using the .z filename suffix).
These commands are no longer included in Oracle Solaris 11.4 and later releases. Instead of unpack, you can use the gzip(1) command to uncompress an existing packed file. Instead of pcat, you can use the gzip(1) command to output the contents of an existing packed file.
See attributes(7) for descriptions of the following attributes: