CPUs: Intel(R) Atom(TM) CPU N270 @1.60GHz
Looks like 6 is a google analytics cookie.
bash-4.3$ date
Sat Jun 15 22:17:37 CEST 2019
bash-4.3$ firefox -v
Mozilla Firefox 60.6.1
bash-4.3$ rm -r .mozilla
bash-4.3$ firefox https://github.com/ &
[1] 2300
bash-4.3$ alloc factor 0.900000 0.900000
alloc factor 0.900000 0.900000
alloc factor 0.900000 0.900000
alloc factor 0.900000 0.900000
alloc factor 0.900000 0.900000
alloc factor 0.900000 0.900000
alloc factor 0.900000 0.900000
alloc factor 0.900000 0.900000
bash-4.3$ ls .mozilla/firefox
6buu9lcq.default profiles.ini
bash-4.3$ cp .mozilla/firefox/6buu9lcq.default/cookies.sqlite /tmp
bash-4.3$ sqlite3 /tmp/cookies.sqlite
SQLite version 3.13.0 2016-05-18 10:57:30
Enter ".help" for usage hints.
sqlite> .header on
sqlite> .mode csv
sqlite> .output cookies.csv
sqlite> SELECT * FROM moz_cookies;
sqlite> .quit
bash-4.3$ file cookies.csv
cookies.csv: ASCII text, with CRLF line terminators
bash-4.3$ kill 2300
bash-4.3$ rm /tmp/cookies.sqlite
bash-4.3$ cat cookies.csv
id,baseDomain,originAttributes,name,value,host,path,expiry,lastAccessed,creationTime,isSecure,isHttpOnly,inBrowserElement,sameSite
1,github.com,"",has_recent_activity,1,github.com,/,1560634143,1560630545751402,1560630545751402,0,0,0,0
2,github.com,"",logged_in,no,.github.com,/,2191782543,1560630545752720,1560630545752720,1,1,0,0
3,github.com,"",_ga,GA1.2.2033439334.1560630572,.github.com,/,1623702572,1560630572658947,1560630572658947,0,0,0,0
4,github.com,"",_gat,1,.github.com,/,1560631172,1560630573263985,1560630573263985,0,0,0,0
5,github.com,"",_octo,GH1.1.976119320.1560630574,.github.com,/,1623702574,1560630574632866,1560630574632866,0,0,0,0
6,mozilla.org,"",_ga,GA1.2.1454749891.1560630575,.mozilla.org,/,1623702575,1560630575364239,1560630575364239,0,0,0,0
bash-4.3$ rm cookies.csv
bash-4.3$ exit
Updated: 21-11-2019
For the newer 68.2.0esr release cd into ~/.mozilla/firefox/*-default.
bash-4.3$ rm -r .mozilla
bash-4.3$
Open firefox from KDE's taskbar icon.
After the 2 default tabs have finished loading exit the browser.
bash-4.3$ cd ~/.mozilla/firefox/*.default
bash-4.3$ sqlite3 cookies.sqlite
SQLite version 3.13.0 2016-05-18 10:57:30
Enter ".help" for usage hints.
sqlite> DELETE FROM moz_cookies WHERE baseDomain = 'mozilla.org';
sqlite> .quit
bash-4.3$ date +%s%3N
1561094933309
bash-4.3$ sqlite3 permissions.sqlite
SQLite version 3.13.0 2016-05-18 10:57:30
Enter ".help" for usage hints.
sqlite> INSERT INTO "moz_perms" VALUES(1,'http://mozilla.org','cookie',2,0,0,1561094933309);
sqlite> .quit
bash-4.3$ exit