getOsInfo
Get information about the operating system.
On Linux this comes from the /etc/os-release file. On other systems, it may come from a variety of sources. You can either use the standard key names like %G_OS_INFO_KEY_NAME or pass any UTF-8 string key name. For example, /etc/os-release provides a number of other less commonly used values that may be useful. No key is guaranteed to be provided, so the caller should always check if the result is null.
Return
The associated value for the requested key or null if this information is not provided.
Since
2.64
Parameters
keyName
a key for the OS info being requested, for example %G_OS_INFO_KEY_NAME.