Editing Compress (software) (section)

== Standardization and availability ==
compress was standardized in X/Open CAE Specification in 1994,<ref>[https://pubs.opengroup.org/onlinepubs/009656399/toc.pdf X/Open CAE Specification Commands and Utilities Issue 4, Version 2] (pdf), 1994, opengroup.org</ref> and further in The Open Group Base Specifications, Issue 6 and 7.<ref>{{man|cu|compress|SUS6}}</ref> [[Linux Standard Base]] does not requires compress.<ref>[https://refspecs.linuxfoundation.org/LSB_5.0.0/LSB-Core-generic/LSB-Core-generic/command.html Chapter 17. Commands and Utilities] in Linux Standard Base Core Specification 5.0.0, linuxfoundation.org</ref>

compress is often not installed by default in Linux distributions, but can be installed from an additional package.<ref>[https://pkgs.org/download/ncompress ncompress], pkgs.org</ref> compress is available for FreeBSD, OpenBSD, MINIX, Solaris and AIX.

compress is allowed for [[Point-to-Point Protocol]] in {{IETF RFC|1977}} and for [[HTTP/1.1]] in {{IETF RFC|9110}}, though it is rarely used in modern deployments as the better deflate/gzip is available.

The gunzip utility is able to decompress .Z files.<ref>{{cite web | title=GNU Gzip | website=The GNU Operating System and the Free Software Movement | date=2023-02-05 | url=https://www.gnu.org/software/gzip/manual/gzip.html | access-date=2024-04-03 |quote=gunzip can currently decompress files created by gzip, zip, compress or pack. The detection of the input format is automatic. }}</ref>