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I created a eclipse.desktop and locked it to unity launcherd , when I double click on it on desktop, the eclipse was launched just like launching from unity launcher. But if I start it from command line by "path/to/eclipse", the unity launcher will create a new icon in the launcher bar.
How can I avoid this? Is there a command to open the desktop launcher just like double click on it?
You can do the following to make the association between the launcher and its command stronger:
1.) Launch eclipse from the command line
2.) Execute xprop WM_CLASS from a terminal and note down one of the quoted strings
3.) Edit your launcher with the following line:
StartupWMClass=$WM_CLASS
where $WM_CLASS is one of the quoted strings.
For this to work please make sure your .desktop launcher is located somewhere, where it's recognized by the system, e.g. $HOME/.local/share/applications or /usr/share/applications.
unity --resetfirst that will not work in latest ubuntu and for older it will reset all your desktop configuration. And neitherunity ---reset-iconswill help in this case. Please include the content of the desktop file in the question.