Install ftp.app by entering the following commands in the terminal:
sudo apt update sudo apt install ftp.app
Description:
File transfer protocol application for GNUstep
This is a file transfer application (RFC 765) featuring a compact and easy interface. As most applications in GAP it tries to work on both GNUstep and MacOS X and retain the utmost possible similarity among the two version to ease working in both environments. . FTP supports different port arbitration modes: "default", standard "PORT" (also known as active) and standard "PASV" (also known as passive).
Homepage: http://www.nongnu.org/gap/ftp/
Version: 0.6-1build2
Section: universe/net