if sshpass fails, run normal ssh. check for dialog

library.sh

@@ -58,7 +58,14 @@ function ssh_pi()
                       -o ConnectTimeout=20\
                       -o LogLevel=quiet                  )
   type sshpass &>/dev/null && local SSHPASS=( sshpass -p$PIPASS )
-  ${SSHPASS[@]} ${SSH[@]} ${PIUSER}@$IP $ARGS
+  if [[ "${SSHPASS[@]}" == "" ]]; then
+    ${SSH[@]} ${PIUSER}@$IP $ARGS; 
+  else
+    ${SSHPASS[@]} ${SSH[@]} ${PIUSER}@$IP $ARGS 
+    local RET=$?
+    [[ $RET -eq 5 ]] && { ${SSH[@]} ${PIUSER}@$IP $ARGS; return $?; }
+    return $RET
+  fi
 }
 
 function wait_SSH()
@@ -87,6 +94,8 @@ function config()
   local INSTALL_SCRIPT="$1"
   local BACKTITLE="NextCloudPi installer configuration"
 
+  type dialog &>/dev/null || { echo "please, install dialog for interactive configuration"; return 1; }
+
   test -f "$INSTALL_SCRIPT" || { echo "file "$INSTALL_SCRIPT" not found"; return 1; }
   local VARS=( $( grep "^[[:alpha:]]\+_=" "$INSTALL_SCRIPT" | cut -d= -f1 | sed 's|_$||' ) )
   local VALS=( $( grep "^[[:alpha:]]\+_=" "$INSTALL_SCRIPT" | cut -d= -f2 ) )

no-ip.sh

@@ -14,7 +14,7 @@
 #   ./no-ip.sh
 #
 # Notes:
-#   Note that you need network connectivity for the installation to register with no-ip.org
+#   Note that you need internet access for the installation to register with no-ip.org
 #
 
 set -xe