Need bash help.

So I have a rewrite rule that enables WWW to any domain inside the .htaccess for cPanel.

RewriteEngine On
RewriteCond %{HTTP_HOST} !^$
RewriteCond %{HTTP_HOST} !^www. [NC]
RewriteCond %{HTTPS}s ^on(s)|
RewriteRule ^ http%1://www.%{HTTP_HOST}%{REQUEST_URI} [R=301,L]

The problem is, that I'm trying to put this into a one liner.

echo -e "RewriteEngine On \nRewriteCond %{HTTP_HOST} !^{$\nRewriteCond} %{HTTP_HOST} !^www. [NC] \nRewriteCond %{HTTPS}s ^on(s)| \nRewriteRule ^ http%1://www.%{HTTP_HOST}%{REQUEST_URI} [R=301,L] " >> .htaccess

I try this, but here are the results:

RewriteEngine On
RewriteCond %{HTTP_HOST} -e$
RewriteCond %{HTTP_HOST} -ewww. [NC]
RewriteCond %{HTTPS}s ^on(s)|
RewriteRule ^ http%1://www.%{HTTP_HOST}%{REQUEST_URI} [R=301,L]

Please save me :c