McAfee Linux OS v3.0 License Details McAfee Linux OS a.k.a. MLOS, is an operating system based on many open source packages. Each package has its own license which continues to be applicable its components when present in MLOS. The file MLOS-3.0-License.htm will detail all the potential packages in MLOS, along with the type of license under which they are released. The text of each type of license can be found under the license sub-directory. Your install may contain fewer packages than listed in this file.