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Summary:
To find the PID of a running UNIX/XWindow process:
$ xprop _NET_WM_PID
If that fails:
$ ps -ww -fp <PID>
$ pwdx <PID>
Detailed explanation:
So How can you find the PID (not Window ID!) of a running UNIX/XWindow process?
Method 1 (simple):
$ xprop […]
Using Kdiff3 tool as example action to add to the SendTo menu of Thunar.
Create the following file in ~/.local/share/Thunar/sendto and name it <whatever>.desktop (I named mine ‘kdiff3.desktop’) :
# kdiff3.desktop – Integrate kdiff3 into
# the “Send To” menu.
[Desktop Entry]
Type=Application
Version=1.0
Encoding=UTF-8
TryExec=kdiff3
Exec=kdiff3 %F
