I want to know about Mailer Security.

[ryojung]

$value =~s/~!/~!/;

It about Mailer Security ?

Some website say "The Unix program mail specially interprets lines that begin with the character ``~'' (tilde)".

But I have question. Why change ~! to ~! it seem?


Thank you

 

[ryojung]

I have one question to ask you
"The Unix program mail specially interprets lines that begin with the character ~ (tilde)".

I don't understand that is mean in unix.