Editing IBM mainframe (section)

===Operating systems===
The primary [[operating system]]s in use on current IBM mainframes include [[z/OS]] (which followed [[MVS#MVS/ESA|MVS/ESA]] and [[OS/390]] in the [[OS/360 and successors|OS/360]] lineage), [[z/VM]] (which followed [[VM (operating system)|VM/ESA]] and VM/XA SP in the [[CP/CMS|CP-40]] lineage), [[z/VSE]] (which is in the [[DOS/360 and successors|DOS/360 lineage]]), [[z/TPF]] (a successor of Transaction Processing Facility in the [[Airlines Control Program]] lineage), and [[Linux on IBM Z]] (e.g., [[Debian]], [[Red Hat Enterprise Linux]], [[SUSE Linux Enterprise Server]]). Some systems run [[MUSIC/SP]], as well as [[UTS (Mainframe UNIX)]]. In October 2008, Sine Nomine Associates introduced [[OpenSolaris on System z]]; it has since been discontinued.