$ sudo apt-get update
$ sudo apt-get install kftpgrabber 

kftpgrabber is installed in your system.

Make ensure the kftpgrabber package were installed using the commands given below,

$ sudo dpkg-query -l | grep kftpgrabber *

You will get with kftpgrabber package name, version, architecture and description in a table

kftpgrabber package basic information: