02-22-2007
As a general rule, if a command does not return an exit status of 0, it means that something failed. I tried out the first four of your scenarios, and ssh returns 255 for the first three error conditions, and returns 2 (file not found) if the remote directory does not exist.
Simply put, check for the return values for the ssh command.
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LEARN ABOUT DEBIAN
gmpc-remote
gmpc-remote(1) Gnome Music Player Client - Remote control gmpc-remote(1)
NAME
gmpc-remote - a remote control for GMPC.
SYNOPSIS
gmpc-remote [OPTION]
DESCRIPTION
If GMPC is compiled with IPC support gmpc-remote can send commands to the running instance of GMPC.
OPTIONS
--version
Display version.
--help Show all available application options.
--quit Quit the running gmpc.
--play Give GMPC the play command.
--pause
Give GMPC the pause command.
--next Give GMPC the next command.
--prev Give GMPC the previous command.
--stop Give GMPC the stop command.
--stream
Gives mpd a stream to parse and play.
--easycommand
Send an 'easy command' query to GMPC.
--toggle-view
Give GMPC the command to show/hide itself.
--hide-view
Give GMPC the command to hide itself.
--show-view
Give GMPC the command to show itself.
SEE ALSO
Website: http://gmpclient.org/
MPD Website: http://www.musicpd.org
Bug tracker: http://www.musicpd.org/mantis/
gmpc-remote-stream(1) gmpc(1) mpd(1)
AUTHOR
gmpc-remote was written by Qball Cow <qball@gmpclient.org>
February 21, 2010 gmpc-remote(1)