Linux – Screenshot utility for linux

On KDE4, you can add a protocol handler under $HOME/.kde4/share/kde4/services/. On Earlier versions I believe this directory is $KDEDIR/share/services/. Create a file called picasa.protocol and place this in it:

[Protocol]
exec=/usr/bin/picasa "%u"
protocol=picasa
input=none
output=none
helper=true
listing=false
reading=false
writing=false
makedir=false
deleting=false

You may need to tweak the options a bit, but I think that should work. This is the same method for setting up the spotify handler in chrome, as well as a handler for last.fm.

Are you sure youtube-dl can read from stdin? If so your second example should work.

Try youtube-dl $(gpaste get [#])

To make sure $(gpaste get [#]) returns what you expect you can first do echo $(gpaste get [#])