Search notes:

/usr/share/distro-info

The /usr/share/distro-info contains CSV files each of which constains a Linux distribution's «version history».

The fields in the files are

`version`
`codename`
`series`
`created`
`release`
`eol`
`eol-lts`
`eol-elts`

See also

lsb_release.py is a Python package that consumes these CSV files. lsb_release, in turn, is used by the Python script lsb_release.