On a Macintosh, aka Mac, OS X/macOS system, the user profile directory where the Firefox web browser stores its data can be found at "/Users/account_name/Library/Application Support/Firefox/Profiles" where account_name is the relevant user name. The profile directory for the account will be a sequence of 8 characters followed by ".default". E.g.:
$ ls "/Users/jasmith1/Library/Application Support/Firefox/Profiles" bgq13udo.default $
Within that directory will be a cookies.sqlite file within which
Firefox stores browser cookies. You can view those cookies outside of
Firefox using the
SQLite
relational database management system software found on
OS X/macOS systems. You can examine the sqlite file with the
sqlite3 command, which you
can run from a command line interface (CLI), i.e., a
Bash shell prompt, by opening a
Terminal window; the Terminal application is found in the
Applications/Utilities directory. You can
examine the structure of the database using the SQLite .schema
command. There is a moz_cookies
table within the database.
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