echo -e "[Desktop Entry]\nEncoding=UTF-8\nName=Firefox\nComment=Firefox\nExec=/opt/firefox/firefox %u\nTerminal=false\nIcon=/opt/firefox/browser/chrome/icons/default/default128.png\nStartupWMClass=Firefox\nType=Application\nCategories=Network;WebBrowser;\nMimeType=text/html;text/xml;application/xhtml+xml;application/xml;application/vnd.mozilla.xul+xml;application/rss+xml;application/rdf+xml;x-scheme-handler/http;x-scheme-handler/https;\nStartupNotify=true\n" | sudo tee -a /usr/share/applications/firefox.desktop