Diskpart is not available for Linux but there are some alternatives that runs on Linux with similar functionality. The best Linux alternative is GParted, which is both free and Open Source. If that doesn't suit you, our users have ranked more than 25 alternatives to Diskpart and eight of them are available for Linux so hopefully you can find a suitable replacement. Other interesting Linux alternatives to Diskpart are gnome-disk-utility (Free, Open Source), KDE Partition Manager (Free, Open Source), Parted Magic (Paid) and GNU Parted (Free, Open Source).
GParted is a GTK+ frontend to GNU Parted and the official GNOME Partition Editor application. It is used for creating, deleting, resizing, moving, checking and copying partitions, and the file systems on them.
KDE Partition Manager is a utility program to help you manage the disk devices, partitions and file systems on your computer. It allows you to easily create, copy, move, delete, resize without losing data, backup and restore partitions.
The Parted Magic OS employs core programs of GParted and Parted to handle partitioning tasks with ease, while featuring other useful programs (e.g. Partition Image, TestDisk, fdisk, sfdisk, dd, and ddrescue) and an excellent set of documentation to benefit the user.
Gpart is a tool which tries to guess the primary partition table of a PC-type hard disk in case the primary partition table in sector 0 is damaged, incorrect or deleted. The guessed table can be written to a file or device.