CentOS inserting new line of text after another using sed not working

I’m trying to insert a line of text which is;

include /etc/nginx/sites-enabled/*;

On the next line after the words;

for more information.

in my /etc/nginx/nginx.conf using the following command

sudo sed '/for more information.'/a include /etc/nginx/sites-enabled/*;' /etc/nginx/nginx.conf

But each time i run it, it just returns

>

Im not very good with this sort of stuff so i was hoping someone could help me out.

Cheers,

Answer

Remove the second single-quote. It is superfluous:

sudo sed '/for more information./a include /etc/nginx/sites-enabled/*;' /etc/nginx/nginx.conf

Also, Because . matches any character and you probably want it to match only a period, escape it like this:

sudo sed '/for more information./a include /etc/nginx/sites-enabled/*;' /etc/nginx/nginx.conf

Or this:

sudo sed '/for more information[.]/a include /etc/nginx/sites-enabled/*;' /etc/nginx/nginx.conf