which wget >/dev/null 2>/dev/null
if [ $? -eq 0 ]; then
wget -q -O rust.tar.gz "$DOWNLOAD_LINK"
else
which curl >/dev/null 2>/dev/null
if [ $? -eq 0 ]; then
curl -L -o rust.tar.gz "$DOWNLOAD_LINK"
else
echo "wget or curl required"
exit 1
fi
fi
exec tar -zx --strip-components=1 -f rust.tar.gz