With the !ifos command you can test the operating system UDO is running on. Use the following words for this kind of query:
beos: | BeOS |
dos: | DOS |
hpux: | HP-UX |
linux: | Linux |
macos: | Mac OS |
macosx: | Mac OS X |
nextstep: | NeXTStep |
sinix: | SINIX |
sunos: | SunOS |
tos: | TOS |
win: | Windows (32 bit) |
Like in the other queries you can use "all" and "none", too.
The related command called !ifnos tests if UDO does not run on the given operating system.