Thanks. I have purchased Linearicons and I had to upload them to my server (Sorry it is not free version so I can not put the link here)
By using the font-family option I call the font from my server. But bear in mind you need to add an .htaccess file to the folder to let the cross browser call on font files. Here is an example:
<FilesMatch “.(ttf|otf|eot|woff)$”>
<IfModule mod_headers.c>
Header set Access-Control-Allow-Origin “*”
</IfModule>
</FilesMatch>