Check that file exists

src/freedombone-upgrade

     fi
 fi
 
-if grep -q "cat /root/dbpass" /usr/bin/backupdatabases; then
-    # update to using the password manager
-    sed -i "s|cat /root/dbpass|freedombone-pass -u root -a mariadb|g" /usr/bin/backupdatabases
+if [ -f /usr/bin/backupdatabases ]; then
+    if grep -q "cat /root/dbpass" /usr/bin/backupdatabases; then
+        # update to using the password manager
+        sed -i "s|cat /root/dbpass|freedombone-pass -u root -a mariadb|g" /usr/bin/backupdatabases
+    fi
 fi
 
 #update-ca-certificates