Fixed some issues regarding connectivity

.env

 ID=labo1
-SFTP_URL=${ID}@spsp-sftp.vital-it.ch:/data
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+HOST=spsp-sftp.vital-it.ch
+SFTP_URL=${ID}@${HOST}:/data
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spsp

@@ -210,10 +210,17 @@ if [ $# -gt 0 ]; then
         fi
 
         LOGFILE="./logs/spsp-$CURRENTDATE.log"
+
         if [ ! -f $LOGFILE ]; then
             touch $LOGFILE
         fi
-        echo ""
+
+        if ! nc -w 1 -z ${HOST} 22 &> /dev/null;then 
+            echo "[`date +"%T"`] local.ERROR: ${HOST}:22 is unreachable, please check your connection" >> $LOGFILE
+            echo "SPSP: Error detected please check $LOGFILE"
+            exit 0
+        fi
+
         for DIRECTORY in *; do
             if [ -d "$DIRECTORY" ] && [ $DIRECTORY != $OUTBOX ] && [ $DIRECTORY != $SENT ] && [ $DIRECTORY != $LOGS ]; then
                 if ls $DIRECTORY/*.fastq* 1> /dev/null 2>&1 && [ -f $DIRECTORY/*.xlsx ]; then
@@ -224,13 +231,13 @@ if [ $# -gt 0 ]; then
                     rm -rf $DIRECTORY
                     mv $DIRECTORY.tar.gz ./outbox/.
                 else
-                    echo "[`date +"%T"`] local.ERROR: Missing files (*.fastq or *.xlsx) inside ${DIRECTORY}" >> $LOGFILE
+                    echo "[`date +"%T"`] local.ERROR: Missing files (*.fastq/.fastq.gz and/or *.xlsx) inside ${DIRECTORY}" >> $LOGFILE
                     echo "SPSP: Error detected please check $LOGFILE"
                     exit 0
                 fi
             fi
         done
-        echo ""
+
         for FILE in ./outbox/*; do
             if [ -f "$FILE" ]; then
                 echo "SPSP: Signing $FILE using SHA-256 algorithm..."
@@ -255,10 +262,6 @@ if [ $# -gt 0 ]; then
                     exit 0
                 fi
                 echo ""
-            else
-                echo "[`date +"%T"`] local.ERROR: No file found inside output directory" >> $LOGFILE
-                echo "SPSP: Error detected please check $LOGFILE"
-                exit 0
             fi
         done
         echo ""
@@ -282,7 +285,7 @@ if [ $# -gt 0 ]; then
         encryptFile $@
 
     else
-        message="Command does not exist, please check the help\n ${COL_LGREEN}/script.sh help${COL_RESET}"
+        message="Command does not exist, please check the help\n ${COL_LGREEN}./script.sh help${COL_RESET}"
         printf "$message\n"
     fi
 fi
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