os.type

Values (12)

• windowsMicrosoft Windows
• linuxLinux
• darwinApple Darwin
• freebsdFreeBSD
• netbsdNetBSD
• openbsdOpenBSD
• dragonflybsdDragonFly BSD
• hpuxHP-UX (Hewlett Packard UNIX)
• aixAIX (Advanced Interactive eXecutive)
• solarisSunOS, Oracle Solaris
• z_osdeprecatedDeprecated. Use zos instead.
• zosIBM z/OS

Used by

* required on that signal.

History

1. v1.35.030 Jun 2025

   Enum members changed (11 to 12).

2. v1.31.011 Mar 2025

   Stability label respelled from experimental to development.

3. v1.30.024 Jan 2025

   Already present at v1.30.0, the oldest release tracked here (experimental).