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GIF mode - GIF output without X windows
Ferret can run in batch mode -- without an X server. Invoke batch
mode by starting up Ferret with the -gif option:
> ferret -gif
Graphical output is buffered, and can be stored in a GIF file by executing
the FRAME command. For example:
yes? frame/file=picture.gif
sends the stored graphical output from Ferret to the GIF file
picture.gif.
Please note the following when using batch mode:
-
Window resizing only works if the window is cleared before resizing the
window. For instance:
yes? set window/clear/size=0.25
will resize the window while
yes? set window/size=0.25/clear
will cause an error.
-
Avoid metafile commands when running in batch mode. In particular,
yes? set mode meta
may cause problems.
-
Don't create new Ferret windows when running without an X server. The following
command:
yes? set window/new
will cause Ferret to crash.
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PostScript mode - PostScript output without X windows
Ferret can also generate PostScript files without an X server.
This is an experimental feature and not fully supported. If you wish to
use this mode, start Ferret with the -batch option:
> ferret -batch <file>.ps
where <file> is the name of the output file. Note that the filename
must end with ".ps".
Please note the following when using PostScript mode:
-
The PostScript output will not be fully written to the output file until
you exit from Ferret.
-
Window sizing commands do not have any effect on PostScript output.
-
Avoid metafile commands when running in PostScript mode.
-
Don't create new Ferret windows when running without an X server. The following
command:
yes? set window/new
will cause Ferret to crash.