Use the “--remote” command line option to send commands to an existing Geeqie, for a list of commands supported by the remote switch run:
The delay can not be set when used with the standard --slideshow command line switch, as --slideshow uses the delay stored in the configuration file.
For this, use the remote command --slideshow-start to start the slide show after setting the delay with --delay=. The order of the command line is important. For example for a 12 second slide show delay use:
geeqie --remote --delay=12 --slideshow-start
Note that if geeqie is running prior to this command, the slide show should also be stopped prior to changing the delay:
geeqie --remote --slideshow-stop --delay=12 --slideshow-start