diff --git a/cf.sh b/cf.sh
index ea37b91..51fac4c 100755
--- a/cf.sh
+++ b/cf.sh
@@ -7,7 +7,7 @@ if [[ ! -f ${1} ]]; then
   exit 1
 fi
 
-exec 3< ${1}
+exec 3<${1}
 while IFS= read -u 3 LINE; do
   PROMPT="${LINE%%=*}"
   CVALUE="${LINE#*=}"
@@ -21,5 +21,6 @@ while IFS= read -u 3 LINE; do
     fi
   fi
 done 
+exec 3<&-
 
 set +ex
diff --git a/sample.txt b/sample.txt
new file mode 100644
index 0000000..9858286
--- /dev/null
+++ b/sample.txt
@@ -0,0 +1,10 @@
+DATABASE_PASSWORD=
+FULLTEXTSEARCH_PASSWORD=
+TIMEZONE=Australia/Perth
+TURN_SECRET=
+TALK_RECORDING_ENABLED="no"
+APACHE_IP_BINDING=0.0.0.0
+APACHE_MAX_SIZE=10737418240
+APACHE_PORT=443
+UPDATE_NEXTCLOUD_APPS="no"
+