fdisk
Unix-like operating system command
fdisk is a command-line utility for disk partitioning. It has been part of DOS, DR FlexOS, IBM OS/2, and early versions of Microsoft Windows, as well as certain ports of FreeBSD, NetBSD, OpenBSD, DragonFly BSD and macOS for compatibility reasons. Wikipedia
Function: Partition table maintenance program
Syntax: fdisk -egvy -i|-u -b blocks -c cylinders -h heads -s sectors -f mbrfile -l blocks disk
Developer(s): Robert Baron, IBM, Microsoft, Digital Research, Datalight, Novell, Brian E. Reifsnyder
Initial release: 1983, 40–41 years ago