Octave provides three functions for viewing, editing, and re-running chunks of commands from the history list.
history displays a list of commands that you have
executed. It also allows you to write the current history to a file for
safe keeping, and to replace the history list with the commands stored
in a named file. Valid arguments are:
Nlines of history.
For example, to display the five most recent commands that you have typed without displaying line numbers, use the command `history -q 5'.
edit_history allows you to edit a block of commands
from the history list using the editor named by the environment
EDITOR, or the default editor (normally
is often more convenient to use
edit_history to define functions
rather than attempting to enter them directly on the command line.
By default, the block of commands is executed as soon as you exit the
editor. To avoid executing any commands, simply delete all the lines
from the buffer before exiting the editor.
edit_history command takes two optional arguments specifying
the history numbers of first and last commands to edit. For example,
extracts all the commands from the 13th through the last in the history list. The command
edit_history 13 169
only extracts commands 13 through 169. Specifying a larger number for the first command than the last command reverses the list of commands before placing them in the buffer to be edited. If both arguments are omitted, the previous command in the history list is used.
run_history is like
edit_history, except that
the editor is not invoked, and the commands are simply executed as they
appear in the history list.
diary command allows you to create a list of all commands
and the output they produce, mixed together just as you see them
on your terminal.
For example, the command
tells Octave to start recording your session in a file called `diary' in your current working directory. To give Octave the name of the file write to, use the a command like
Then Octave will write all of your commands to the file `my-diary.txt'.
To stop recording your session, use the command
Without any arguments,
diary toggles the current diary state.