Mine
public text v1 · immutablegina@bergisel:~$ ps aux | grep pdf
gina 17158 1.2 4.6 19872 12000 ? Ss 18:29 0:03 gpdf /home/gina/science_303/1329.pdf
gina 17162 1.5 5.9 23296 15184 ? S 18:29 0:03 /usr/lib/gpdf/gnome-pdf-viewer --oaf-activate-iid=OAFIID:GNOME_PDF_Factory --oaf-ior-fd=50
gina 17163 0.0 5.9 23296 15184 ? S 18:30 0:00 /usr/lib/gpdf/gnome-pdf-viewer --oaf-activate-iid=OAFIID:GNOME_PDF_Factory --oaf-ior-fd=50
gina 17268 0.0 0.2 2056 748 pts/2 R+ 18:33 0:00 grep pdf