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7.4 Summary of Built-in Variables

Here is a summary of all of Octave's built-in variables along with cross references to additional information and their default values. In the following table octave-home stands for the root directory where all of Octave is installed (the default is ‘/usr/local’, version stands for the Octave version number (for example, 3.0.2) and arch stands for the type of system for which Octave was compiled (for example, x86_64-unknown-linux-gnu).

EDITOR

See section 33.4.8 Commands For Manipulating The History. Default value: "emacs".

EXEC_PATH

See section 32.5 Controlling Subprocesses. Default value: ":$PATH".

OCTAVE_HOME

Default value: "/usr/local".

PAGER

See section 14 Input and Output. Default value: "less", or "more".

PS1

See section 33.4.10 Customizing the Prompt. Default value: "\s:\#> ".

PS2

See section 33.4.10 Customizing the Prompt. Default value: "> ".

PS4

See section 33.4.10 Customizing the Prompt. Default value: "+ ".

beep_on_error

See section 12 Errors and Warnings. Default value: 0.

completion_append_char

See section 33.4.7 Letting Readline Type For You. Default value: " ".

default_save_options

See section 14.1.3 Simple File I/O. Default value: "ascii".

crash_dumps_octave_core

See section 14.1.3 Simple File I/O. Default value: 1.

fixed_point_format

See section 4.1 Matrices. Default value: 0.

gnuplot_binary

See section 15.1.2 Three-Dimensional Plotting. Default value: "gnuplot".

history_file

See section 33.4.8 Commands For Manipulating The History. Default value: "~/.octave_hist".

history_size

See section 33.4.8 Commands For Manipulating The History. Default value: 1024.

ignore_function_time_stamp

See section 11.7 Function Files. Default value: "system".

max_recursion_depth

See section 8.2.2 Recursion. Default value: 256.

output_max_field_width

See section 4.1 Matrices. Default value: 10.

output_precision

See section 4.1 Matrices. Default value: 5.

page_screen_output

See section 14 Input and Output. Default value: 1.

print_answer_id_name

See section 14.1.1 Terminal Output. Default value: 1.

print_empty_dimensions

See section 4.1.1 Empty Matrices. Default value: 1.

return_last_computed_value

See section 11.5 Returning From a Function. Default value: 0.

save_precision

See section 14.1.3 Simple File I/O. Default value: 17.

saving_history

See section 33.4.8 Commands For Manipulating The History. Default value: 1.

sighup_dumps_octave_core

See section 14.1.3 Simple File I/O. Default value: 1.

sigterm_dumps_octave_core

See section 14.1.3 Simple File I/O. Default value: 1.

silent_functions

See section 11.1 Defining Functions. Default value: 0.

split_long_rows

See section 4.1 Matrices. Default value: 1.

struct_levels_to_print

See section 6.1 Data Structures. Default value: 2.

suppress_verbose_help_message

See section 2.3 Commands for Getting Help. Default value: 1.