Replace in a file with SED a pattern by a SMTP variable

Question

I want to replace a string by a environment variable containing a SMTP url (so with @,: and /) in a file. How can I achieve that in a bash command?

I tried with sed but I think the @ is broking my command.

sed -i -- s/{{MAIL_URL}}/"$MAIL_URL"/g *

Thanks for your help!

Answer 1

Your SMTP url may contain / characters which coincide/break sed expression delimiter / .
Change sed expresssion delimiter to another character:

sed -i "s~{{MAIL_URL}}~$MAIL_URL~g" *