Gwenview's errors can probably be safely ignored. Many applications are distributed in a way to meet everyone's use case, hence many features go unused - and generally unnoticed, until ran from a terminal :-) If output needs to be quieted, definitely use redirects to /dev/null.
 
Gwenview has been around since 2006, back in the KDE3 days. Who knows how much code is left over and dangling, unused and no longer needed?
 
Also, Joe, check out some general stuff on process management - nohup, fg, bg, etc. - it's useful stuff.
 
sean

On Tue, Jan 29, 2013 at 2:57 PM, der.hans <PLUGd@lufthans.com> wrote:
Am 29. Jan, 2013 schwätzte joe@actionline.com so:

moin moin,


Recently, Brian explained that I could add 2>/dev/null after a
command to eliminate the display of errors that occurs when I just
type gwenview filename.jpg.

gwenview filename.jpg 2>/dev/null

Thanks Brian. That is very helpful.

But I would still like to know what might be done to stop all the
error messages that the system generates when I just type gwenview
filename.jpg (as shown below).

I just ran a test with gwenview. It just spits out junk :(.

I didn't get the nepomuk errors, but I did get some debug notices.

gwenview(29917)/kdeui (kdelibs): Attempt to use QAction "edit_redo" with
KXMLGUIFactory! gwenview(29917)/kdeui (kdelibs): Attempt to use QAction "edit_undo" with
KXMLGUIFactory! gwenview(29917) Gwenview::ViewMainPagePrivate::setCurrentView: No index
found for current view

It would be nice if it ran more cleanly.


Also, is there some additional option I could add to the example
script above that would cause the terminal window to close and leave
gwenview open?  As it is now, the terminal remains open and if I
close it, gwenview also closes.

Put an '&' at the end to run the command in the background, then you can
close the terminal.

gwenview filename.jpg 2>/dev/null &

This will also work for within a script if you want the script to move on
directly after launching gwenview.

Alternatively, you can use <alt>-<F2> to bring up a launcher and put your
command in that.

gwenview *png

That will run gwenview disassociated from a terminal, so there is no
terminal to close and there is no terminal to recieve the debug messages.

ciao,

der.hans


Of course, I can open gwenview from the menu to avoid the terminal
window, but it would be helpful to be able to execute commands in
terminal (and create scripts for certain tasks) that I could execute
without leaving a terminal open.


-------------------
$ gwenview test.jpg
"/usr/bin/gwenview(24601)" Soprano:
"org.freedesktop.DBus.Error.ServiceUnknown - The name
org.kde.nepomuk.services.nepomukstorage was not provided by any
.service files"
"/usr/bin/gwenview(24601)" Soprano: "QLocalSocket::connectToServer:
Invalid name"
"/usr/bin/gwenview(24601)" Soprano:
"org.freedesktop.DBus.Error.ServiceUnknown - The name
org.kde.nepomuk.services.nepomukstorage was not provided by any
.service files"
"/usr/bin/gwenview(24601)" Soprano: "QLocalSocket::connectToServer:
Invalid name"
"/usr/bin/gwenview(24601)" Soprano:
"org.freedesktop.DBus.Error.ServiceUnknown - The name
org.kde.nepomuk.services.nepomukstorage was not provided by any
.service files"
"/usr/bin/gwenview(24601)" Soprano: "QLocalSocket::connectToServer:
Invalid name"
"/usr/bin/gwenview(24601)" Soprano:
"org.freedesktop.DBus.Error.ServiceUnknown - The name
org.kde.nepomuk.services.nepomukstorage was not provided by any
.service files"
"/usr/bin/gwenview(24601)" Soprano: "QLocalSocket::connectToServer:
Invalid name"
QInotifyFileSystemWatcherEngine::addPaths: inotify_add_watch failed:
No such file or directory
QFileSystemWatcher: failed to add paths: /home/joe/.config/ibus/bus
"/usr/bin/gwenview(24601)" Soprano:
"org.freedesktop.DBus.Error.ServiceUnknown - The name
org.kde.nepomuk.services.nepomukstorage was not provided by any
.service files"
"/usr/bin/gwenview(24601)" Soprano: "QLocalSocket::connectToServer:
Invalid name"
gwenview(24601)/kdeui (kdelibs): Attempt to use QAction "edit_redo"
with KXMLGUIFactory!
gwenview(24601)/kdeui (kdelibs): Attempt to use QAction "edit_undo"
with KXMLGUIFactory!
gwenview(24601) Gwenview::ViewMainPagePrivate::setCurrentView: No
index found for current view
gwenview(24601) KXMLGUI::ActionList::plug: Index  20  is not within
range (0 -  19
gwenview(24601) KXMLGUI::ActionList::plug: Index  20  is not within
range (0 -  19
gwenview(24601) KXMLGUI::ActionList::plug: Index  20  is not within
range (0 -  19
gwenview(24601) KXMLGUI::ActionList::plug: Index  20  is not within
range (0 -  19



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