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I'm trying to get the profile directory of the default firefox profile (the one that opens automatically) from Bash. How could I proceed? I can't find any useful options issuing firefox --help

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you can du a firefox; sudo lsof | grep [username] | grep firefox | grep profile which would get a firefox instance running. lsof will show you the opened files; grep will filter you out the interesting parts of lsof. This will quickstart the info + needs some fine-tuning. What do you need the information for anyhow? Do you wanna put some stuff automatically in a firefox profile folder - why? – humanityANDpeace Jan 10 at 13:22
I want to get the firefox decmod.db file, because it is needed for a Java web application. For some reason, it works out of the box on Windows, but a configuration file with the path to the decmod.db file should be placed at home on Linux. I want to generate this file automatically. – Jorge Suárez de Lis Jan 10 at 16:17
Sorry, can't edit my previous comment. Your proposal "works", but I want to place this on a session start script (for several reasons, it's the only place that makes sense) and I don't want to run firefox on each session start. – Jorge Suárez de Lis Jan 10 at 16:26

1 Answer

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Your default profile directory is stored under home directory.

cd ~/.mozilla/firefox

Here you will find something like xxxxxxxx.default. This is the location where all your personal data is stored.

You can run the command firefox -P to show the profiles available and select one from the list.

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The correct dir should be .mozilla – Ubuntu Jan 10 at 13:39
That's what I'm doing right now, find $HOMEDIR/.mozilla/firefox/ -maxdepth 1 -type d -name *.default | head -1. But that CAN fail. It's not a good way to do it. – Jorge Suárez de Lis Jan 10 at 16:33
Try cat ~/.mozilla/firefox/profiles.ini | grep Path | sed s/Path=//. Default profile name is stored in profiles.ini. If you have more than one Firefox profile insert head -1 into the pipe between grep and sed as your default profile should be the first one under [Profile0] section. – whtyger Jan 30 at 7:23

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