use crontab and mail command to backup your firefox bookmarks

add the following line to ~/cron.yourname , (yourname is your real login name)

30 12 * * * date '+%m/%d/%Y' | mail -s "bookmark"" `date '+%m/%d/%y'`" -a /home/yourname/.mozilla/firefox/68k8bqg9.default/bookmarks.html receiver1@abc.com receiver2@abc.com

maybe 68k8bqg9.default should be replaced by your actual bookmarks directory.

and run:

%crontab ~/cron.yourname

then crontab would run at 12:30 am to send firefox bookmark to your email receiver1 and receiver2.

date '+%m/%d/%Y' : to show date as "01/23/2007"

it use filter to current date as the mail's content. and use -a to specify the attachment.

it use -s spesify subject as: "bookmark"" `date '+%m/%d/%y'`" ,

here date is backquoted.