how to open profile manager in firefox in Ubuntu 21.10+ or firefox installed with snap?

Question

How to open profile manager every time on clicking New Window or clicking on firefox shortcut in Ubuntu 21.10+ or Firefox installed with snap?

Answer 1

Following are steps:

sudo find / -type f -name firefox*.deskop
find following file: /var/lib/snapd/desktop/applications/firefox_firefox.desktop

sudo nano /var/lib/snapd/desktop/applications/firefox_firefox.desktop
[Desktop Entry]
Exec=... /snap/bin/firefox --profilemanager

[Desktop Action NewWindow]
Exec=... /snap/bin/firefox --profilemanager