second recalls the next anterior command that corresponds to the search : Go back to the next more recent command of the reverse search (beware to not execute it from a terminal because this command also launches its XOFF). If you changed that XOFF setting, use to return. : Transpose the previous two characters. : Clears the line content before the cursor and copies it into the clipboard. : If the next input is also a control sequence, type it literally (e. g. * types "^H", a literal backspace.) : Clears the word before the cursor and copies it into the clipboard. : Edits the current line in the $EDITOR program, or vi if undefined. : Read in the contents of the inputrc file, and incorporate any bindings or variable assignments found there. : Incremental undo, separately remembered for each line. : Display version information about the current instance of Bash. : Alternates the cursor with its old position. (C-x, because x has a crossing shape). : (yank) adds the clipboard content from the cursor position. : Sends the signal SIGTSTP to the current task, which suspends it. To execute it in background one can enter bg. To bring it back from background or suspension fg ['process name or job id'] (foreground) can be issued. : Incremental undo, separately remembered for each line. : (backward) moves the cursor backward one word. : Capitalizes the character under the cursor and moves to the end of the word. : Cuts the word after the cursor. : (forward) moves the cursor forward one word. : Lowers the case of every character from the cursor's position to the end of the current word. : Cancels the changes and puts back the line as it was in the history. : Capitalizes every character from the cursor's position to the end of the current word. : Insert the last argument to the previous command (the last word of the previous history entry). Choice of the GPL as GNU Readline's license GNU Readline is notable for being a free software library which is licensed under the GNU General Public License (GPL). Free software libraries are far more often licensed under the GNU Lesser General Public License (LGPL), for example, the GNU C Library, GNU gettext and FLTK. A developer of an application who chooses to link to an LGPL licensed library can use any license for the