operating-system As a command 16 categories below operating-system Narrow by unix-like 10 linux-distribution 4 free-and-open-source-software 2 free-software 2 open-source-software 2 unix 2 berkeley-software-distribution 1 linux 1 berkeley-software-distribution 1linux 1linux-distribution 4unix 2unix-like 10androidarch-linuxdebiandisk-operating-systemfedora-linuxfreebsdiosmacosmicrosoft-windowsreal-time-operating-systemubuntu