binary_packages='deb http://download.noosfero.org/debian/wheezy-1.2 ./' source_packages=$(echo "$binary_packages" | sed -e 's/^deb/deb-src/') if ! grep -q "$binary_packages" /etc/apt/sources.list.d/noosfero.list; then sudo tee /etc/apt/sources.list.d/noosfero.list <