2 .\" Copyright (c) 2019 M. Warner Losh <imp@FreeBSD.org>
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30 .Nd file describing the current OS and some of its attributes
34 file is a new-line separated list of key value pairs.
35 The syntax of this file is a reduced
37 variable assignment with the
38 following restrictions:
41 Strings cannot be concatenated together
43 No variable expansion is done
45 All shell special characters must be quoted as documented in
48 Variable assignments must be included inside of double quotes
49 if they contain characters outside of A-Z, a-z and 0-9
51 All strings should be UTF-8 format
53 Non-printable characters should not be used in the strings
56 Lines starting with the character
58 are ignored as comments.
60 The following variables are defined by the standard.
61 .Bl -tag -width XXXXXXXXXX -compact
63 A string describing the preferred OS name.
65 Version string for the OS, in its usual and customary format.
67 Lower case version of the name with only a-z, 0-9,
73 Lower case version of the version with only a-z, 0-9,
79 A pretty version of the name presented to the user.
80 May contain release information.
82 Suggested color presentation for the OS.
83 This string should be suitable for inclusion within an ESC [ m ANSI/ECMA-48
84 escape sequence to render the OS in its preferred color.
85 This variable is optional.
87 A CPE name for the operating system.
88 This field shall follow the NIST Common Platform Enumeration specification.
92 .It Dv PRIVACY_POLICY_URL
93 Links on the internet, in RFC 3986 format for different aspects of this OS.
94 These variables are optional.
96 A string identifying the build.
97 This variable is optional.
99 A string describing the variant of this operating system.
100 This variable is optional.
102 Lower case version of the variant with only a-z, 0-9,
107 This variable is optional.
110 All other variables have no standard-defined meaning.
112 .Bl -tag -width XXXXXXXXXX -compact
113 .It Pa /etc/os-release
114 Symbolic link to actual
117 .It Pa /var/run/os-release
118 Generated os-release file describing the currently running system.
121 .Bl -tag -width XXXXXXXXXX -compact
122 .It CPE Specification
123 .Lk https://csrc.nist.gov/projects/security-content-automation-protocol/scap-specifications/cpe
125 .Lk https://tools.ietf.org/html/rfc3986
126 .It os-release Specification
127 .Lk https://www.linux.org/docs/man5/os-release.html
130 This file first appeared in