add break

run.sh

@@ -2,6 +2,12 @@
 
 cd /usr/src/app
 
+if [ -z "${TO_MAIL}" ]
+then
+echo "TO_MAIL not set."
+exit 1
+fi
+
 function preview {
 
         (>&2 echo "run twitter")
@@ -20,8 +26,8 @@ function preview {
     }
 
 
-#if [ ! -z "$OUTPUT" ]
-#then
+if [ ! -z "$OUTPUT" ]
+then
 (cat << EOF
 Subject: Programm-Info-Bot
 Content-Type: text/plain; charset=UTF-8
@@ -30,4 +36,4 @@ $(preview)"
 EOF
 ) |  msmtp ${MSMTP_ARGUMENTS} ${TO_MAIL}
 
-#fi
+fi