The Official Radare2 Book

Dietline

Radare2 comes with the lean readline-like input capability through the lean library to handle the command edition and history navigation. It allows users to perform cursor movements, search the history, and implements autocompletion. Moreover, due to the radare2 portability, dietline provides the uniform experience among all supported platforms. It is used in all radare2 subshells - main prompt, SDB shell, visual prompt, and offsets prompt. It also implements the most common features and keybindings compatible with the GNU Readline.

Dietline supports two major configuration modes : Emacs-mode and Vi-mode.

It also supports the famous Ctrl-R reverse history search. Using TAB key it allows to scroll through the autocompletion options.