inspect_get_build_id

get the system build ID

This returns the build ID of the system, or the string "unknown" if the system does not have a build ID.

For Windows, this gets the build number. Although it is returned as a string, it is (so far) always a number. See <ulink url='https://en.wikipedia.org/wiki/List_of_Microsoft_Windows_versions'> http://en.wikipedia.org/wiki/List_of_Microsoft_Windows_versions </ulink> for some possible values.

For Linux, this returns the BUILD_ID string from /etc/os-release, although this is not often used.

Please read "INSPECTION" in guestfs(3) for more details.

Parameters:

this	A GuestfsSession object

Returns:

the returned string, or NULL on error