Tweak is a hex editor. It allows you to edit a file at very low level, letting you see the full and exact binary contents of the file. It can be useful for modifying binary files such as executables, editing disk or CD images, debugging programs that generate binary file formats incorrectly, and many other things. . Tweak runs under any terminal emulator using the curses library. It has customizable keybindings, but the default keybindings are similar to emacs.
