идентификация операционной системы (Operating system identification)
Примечание (Note)
1. Announcement of /etc/os-release
http://0pointer.de/blog/projects/os-release
2. initrd
https://www.kernel.org/doc/html/latest/admin-guide/initrd.html
3. Portable Services Documentation
https://systemd.io/PORTABLE_SERVICES
4. Common Platform Enumeration Specification
http://scap.nist.gov/specifications/cpe/
5. RFC3986 format
https://tools.ietf.org/html/rfc3986
6. freedesktop.org Icon Theme Specification
http://standards.freedesktop.org/icon-theme-spec/latest
