# OS ## Os Attributes The operating system (OS) on which the process represented by this resource is running. | Attribute | Type | Description | Examples | Stability | | ---------------- | ------ | ---------------------------------------------------------------------------------------------------------------------------- | ------------------------------------------------------------------ | ---------------------------------------------------------------- | | `os.build_id` | string | Unique identifier for a particular build or compilation of the operating system. | `TQ3C.230805.001.B2`; `20E247`; `22621` |  | | `os.description` | string | Human readable (not intended to be parsed) OS version information, like e.g. reported by `ver` or `lsb_release -a` commands. | `Microsoft Windows [Version 10.0.18363.778]`; `Ubuntu 18.04.1 LTS` |  | | `os.name` | string | Human readable operating system name. | `iOS`; `Android`; `Ubuntu` |  | | `os.type` | string | The operating system type. | `windows`; `linux`; `darwin` |  | | `os.version` | string | The version string of the operating system as defined in [Version Attributes](/docs/resource/README.md#version-attributes). | `14.2.1`; `18.04.1` |  | `os.type` has the following list of well-known values. If one of them applies, then the respective value MUST be used; otherwise, a custom value MAY be used. | Value | Description | Stability | | -------------- | ------------------------------------ | ---------------------------------------------------------------- | | `windows` | Microsoft Windows |  | | `linux` | Linux |  | | `darwin` | Apple Darwin |  | | `freebsd` | FreeBSD |  | | `netbsd` | NetBSD |  | | `openbsd` | OpenBSD |  | | `dragonflybsd` | DragonFly BSD |  | | `hpux` | HP-UX (Hewlett Packard Unix) |  | | `aix` | AIX (Advanced Interactive eXecutive) |  | | `solaris` | SunOS, Oracle Solaris |  | | `z_os` | IBM z/OS |  |