関連ワード:  is linux multi user operating system    linux is multi user operating system true or false    linux is a multi user multitasking operating system    linux is an example of multi user operating system    linux is single user or multi user operating system    linux is an open source multi user operating system    linux is an example of multi user operating system true or false    linux is a multi tasking and multi user operating system    which is multi user operating system    is linux a single user operating system