On Monday 23 Jun 2014 06:33:12 Walter Dnes wrote: > I vaguely remember a while ago, somebody on this list asked about > running separate instances of Firefox. I finally figured out how to run > separate instances of Firefox, as ***COMPLETELY SEPARATE PROCESSES***. > Namely, that you need ***A SEPARATE PROFILE FOR EACH INSTANCE***. Let's > start with 2 profiles "trusted" and "default". From the command line, > execute the following commands... > > firefox -new-instance -P trusted & > firefox -new-instance -P default & > ps -ef | grep firefox > > You won't need the "&" if you launch from a desktop or window-manager > launcher. In the above example, I launched 2 instances of Firefox, and > verified their existance by running "ps -ef | grep firefox". > > So if you have some sites that you visit regularly, you can have a > separate profile for each one. This has some advantages... > > 1) You can have totally different customized setups (including different > add-ons) for each site. > > 2) Profiles, including cookies, are stored in separate directories. > Therefore third-party cookies left by trackers when you're on site A > using profile A, will not be readable by the same third-party when > you're on site B, using profile B, making tracking you more difficult > and less reliable... one... two... three... aaaaawwwwwww. > > 3) If you have a whole bunch of websites open, and one of them crashes > Firefox, or hangs it so you need to kill it, you don't end up taking > down all your browsers.
Taking this a step further I create additional one-off profile directories in /tmp, which are deleted when I reboot (this is a laptop), which ensures that tracing between sites does not happen. Note, you will also need to remove any flash cookies (LSOs) which sit in your ~/ and are not deleted, unless you have installed the Better Privacy addon. For a more pedestrian approach: rm -Rf .macromedia/Flash_Player/* -- Regards, Mick
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