
1) Free software programmed in C
Found on
https://www.crosswordclues.com/clue/mdadm

mdadm is a Linux utility used to manage software RAID devices. The name is derived from the md (multiple device) device nodes it administers or manages, and it replaced a previous utility mdctl. The original name was `Mirror Disk`, but was changed as the functionality increased. mdadm is free software licensed under version 2 or later of the GNU.....
Found on
http://en.wikipedia.org/wiki/Mdadm
No exact match found.