OS-RELEASE(5)             FreeBSD File Formats Manual            OS-RELEASE(5)

NAME
     os-release - file describing the current OS and some of its attributes

DESCRIPTION
     The os-release file is a new-line separated list of key value pairs.  The
     syntax of this file is a reduced sh(1) variable assignment with the
     following restrictions:

     •   Strings cannot be concatenated together

     •   No variable expansion is done

     •   All shell special characters must be quoted as documented in sh(1)

     •   Variable assignments must be included inside of double quotes if they
         contain characters outside of A-Z, a-z and 0-9

     •   All strings should be UTF-8 format

     •   Non-printable characters should not be used in the strings

     Lines starting with the character `#' are ignored as comments.

VARIABLES
     The following variables are defined by the standard.
     NAME        A string describing the preferred OS name.
     VERSION     Version string for the OS, in its usual and customary format.
     ID          Lower case version of the name with only a-z, 0-9, `.', `-',
                 and `_'.
     VERSION_ID  Lower case version of the version with only a-z, 0-9, `.',
                 `-', and `_'.
     PRETTY_NAME
                 A pretty version of the name presented to the user.  May
                 contain release information.
     ANSI_COLOR  Suggested color presentation for the OS.  This string should
                 be suitable for inclusion within an ESC [ m ANSI/ECMA-48
                 escape sequence to render the OS in its preferred color.
                 This variable is optional.
     CPE_NAME    A CPE name for the operating system.  This field shall follow
                 the NIST Common Platform Enumeration specification.
     HOME_URL
     SUPPORT_URL
     BUG_REPORT_URL
     PRIVACY_POLICY_URL
                 Links on the internet, in RFC 3986 format for different
                 aspects of this OS.  These variables are optional.
     BUILD_ID    A string identifying the build.  This variable is optional.
     VARIANT     A string describing the variant of this operating system.
                 This variable is optional.
     VARIANT_ID  Lower case version of the variant with only a-z, 0-9, `.',
                 `-', and `_'.  This variable is optional.

     All other variables have no standard-defined meaning.

FILES
     /etc/os-release
                 Symbolic link to actual os-release file.
     /var/run/os-release
                 Generated os-release file describing the currently running
                 system.

SEE ALSO
     CPE Specification
                 https://csrc.nist.gov/projects/security-content-automation-protocol/scap-specifications/cpe
     RFC 3986    https://tools.ietf.org/html/rfc3986
     os-release Specification
                 https://www.linux.org/docs/man5/os-release.html

HISTORY
     This file first appeared in FreeBSD 13.0.

FreeBSD 13.1-RELEASE-p6        November 23, 2021       FreeBSD 13.1-RELEASE-p6