Not that one should have to, but for Firefox you can cd .mozilla/firefox/$profile git init git add extensions git commit -am init echo '*.x

Not that one should have to, but for Firefox you can cd .mozilla/firefox/$profile git init git add extensions git commit -am init echo '*.xpi diff=zip' >>.gitattributes echo '[diff "zip"]' >>.git/config echo ' textconv = unzip -c -a' >>.git/config which at least lets you take a peek at what kind of nefarious updates you're getting.