apt/vendor/ubuntu/apt-vendor.ent

<!-- details about the keys used by the distribution -->
<!ENTITY keyring-distro "Ubuntu">
<!ENTITY keyring-package "<package>ubuntu-keyring</package>">
<!ENTITY keyring-filename "<filename>/usr/share/keyrings/ubuntu-archive-keyring.gpg</filename>">
<!ENTITY keyring-removed-filename "<filename>/usr/share/keyrings/ubuntu-archive-removed-keys.gpg</filename>">
<!ENTITY keyring-master-filename "/usr/share/keyrings/ubuntu-master-keyring.gpg">
<!ENTITY keyring-uri "http://archive.ubuntu.com/ubuntu/project/ubuntu-archive-keyring.gpg">

<!ENTITY sourceslist-list-format "deb http://us.archive.ubuntu.com/ubuntu &ubuntu-codename; main restricted
deb http://security.ubuntu.com/ubuntu &ubuntu-codename;-security main restricted
deb http://us.archive.ubuntu.com/ubuntu &ubuntu-codename;-updates main restricted">
<!ENTITY sourceslist-sources-format "Types: deb
URIs: http://us.archive.ubuntu.com/ubuntu
Suites: &ubuntu-codename; &ubuntu-codename;-updates
Components: main restricted

Types: deb
URIs: http://security.ubuntu.com/ubuntu
Suites: &ubuntu-codename;-security
Components: main restricted">