gaf(1)

NAME
gaf - gEDA/gaf Command-Line Utility

SYNOPSIS
gaf [OPTION ...] COMMAND [ARGS ...]

DESCRIPTION

gaf is part of the gEDA (GPL Electronic Design Automation) toolset. It provides a number of small command-line utilities for working with schematic and symbol files, and is designed to be used for batch processing of designs created using the schematic editor gschem(1). It currently has three built-in COMMANDs: gaf export is used to create SVG, PDF, PNG, PS and EPS files from schematic and symbol files, for printing or embedding in other documents. gaf config allows reading and writing settings in gEDA project, user and system configuration stores. gaf shell provides a Scheme REPL for command-line batch processing of schematic data.

GENERAL OPTIONS

--no-rcfiles
    Prevent `gafrc' Scheme initialisation files from being loaded.

-h, --help
    Print a help message.

-V, --version
    Print gaf version information.

EXPORTING IMAGE FILES
gaf export [OPTION ...] -o OUTPUT [--] FILE ... gaf export can export schematic and symbol files in a variety of image formats for printing or further processing. It currently supports single-page PNG, SVG and EPS output, and multi-page PS and PDF output. It accepts a variety of options for controlling how the output is formatted.

-o, --output=FILE
    Output generated image data to FILE.

-f, --format=(png | pdf | svg | ps | eps)
    Specify an output format. Usually, this option is not required, because gaf export will infer the correct format from the file extension of the output file.

-p, --paper=NAME
    Size the output for a particular paper size. The NAME should be a PWG 5101.1-2002 paper name. For example, valid values include `iso_a4', `na_letter', or `na_d'.

-l, --layout=(auto | landscape | portrait)
    When using a paper size, set the orientation of the output. If `auto' layout is used, the orientation that best fits the drawing will be used.

-s, --size=(auto | WIDTH:HEIGHT)
    Size the output with specific dimensions. If the size is `auto', select the size that best fits the drawing.

-k, --scale=FACTOR
    Set the output scale FACTOR. This is a distance identical with 100 points (1 default grid spacing) in gschem(1) coordinate space. It is used to size the output when neither --paper nor --size are given, and defaults to 100 mil.

-m, --margins=(auto | TOP[:LEFT[:BOTTOM[:RIGHT]]])
    Set the widths of the margins to be used. If `auto' margins are specified, a sensible default value will be chosen. Up to four margin widths can be provided. If one is provided, it will be used on all four sides. If two are provided, the first will be used for the top/bottom and the second for the left/right. If three are provided, the first will be used for the top, the second for left/right, and the third for the bottom.

-a, --align=(auto | HALIGN:VALIGN)
    Set how the drawing is aligned within the page. HALIGN controls the horizontal alignment, and VALIGN the vertical. Each alignment value should be in the range 0.0 to 1.0. The `auto' alignment is equivalent to a value of `0.5:0.5', i.e. centered.

-d, --dpi=DPI
    Set the number of pixels per inch used when generating PNG output.

-c, --color
    Enable colour output.

--no-color
    Disable color output.

-F, --font=FONT-FAMILY
    Set the font to be used for drawing text.

--  Treat all remaining arguments as schematic or symbol filenames. Use this if you have a schematic or symbol filename which begins with `-'.

The --size, --margins, or --scale options described above accept values using units of `mm', `cm', `in', `pc', `px', or `pt'. If you do not provide a unit, points are assumed. N.b. that `px' are evaluated relative to the current --dpi setting.

When using the --size, --margins, or --align options with multiple values, you may use `;', or ` ' as a separator between them instead of `:'. In such a case, remember to properly quote your arguments to avoid them to be interpreted by your shell.

ACCESSING CONFIGURATION
gaf config [OPTION] [GROUP KEY [VALUE]] gaf config is a basic utility for inspecting and modifying gEDA/gaf configuration stores.

If a GROUP and KEY are specified, retrieves the value of that configuration parameter. If a VALUE is specified, sets the value of that parameter. The -p, -u and -s options can be used to select the configuration store affected (by default, the project configuration store for the current working directory). If no GROUP and KEY are provided, outputs the filename of the selected configuration store.

-p, --project[=PATH]
    Select the project configuration store of the project located in PATH. If no PATH is provided, selects the project in the current working directory.

-u, --user
    Select the user configuration store.

-s, --system
    Select the system configuration store. Depending on user permissions, the system configuration store may be read-only.

SCHEME PROCESSING
gaf shell [OPTION ...] gaf shell provides a Scheme Read-Eval-Print Loop (REPL) for automating processing of schematic and symbol files. It is designed to be used with the gEDA Scheme API.

-s FILE
    Evaluate Scheme source code from FILE, and exit.

-c EXPR
    Evaluate the Scheme expression EXPR, and exit.

--  Stop scanning arguments; run interactively.

-L DIRECTORY
    Prepend DIRECTORY to the list of directories to be searched for Scheme files.

-l FILE
    Evaluate Scheme source code from FILE.

The -s, -c and -- switches stop argument processing and pass all the remaining arguments as the value of `(command-line)'.

ENVIRONMENT

GEDADATA
    specifies the search directory for Scheme and rc files. The default is `${prefix}/share/gEDA'.

GEDADATARC
    specifies the search directory for rc files. The default is `$GEDADATA'.

AUTHORS
See the `AUTHORS' file included with this program.

COPYRIGHT
Copyright © 2012-2015 gEDA Contributors.  License GPLv2+: GNU GPL
version 2 or later.  Please see the `COPYING' file included with this
program for full details.

This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.

SEE ALSO
gschem(1). For more information on the Scheme API, see the geda-scheme Texinfo manual. If the info program is properly installed at your site, the command

    info geda-scheme

should give you access to the complete manual.