fix exit status

acme-downloader.sh

@@ -28,23 +28,26 @@ stty -echoctl # hide ^C
 # function called by trap
 clean_up() {
     rm -f $TMP_CERT $TMP_FULLCHAIN $TMP_CA $TMP_KEY
-    exit $1
+    if [ "$#" -eq 1 ]; then
+        exit $1
+    fi
+    exit
 }
 trap 'clean_up' SIGINT
 
 if [ $(id -u) -ne 0 ]; then
     echo -e "plase run this script as root\ngiving up..."
-    clean_up
+    clean_up 2
 elif ! which curl jq &>/dev/null; then
     echo -e "please install curl and jq\ngiving up..."
-    clean_up
+    clean_up 2
 fi
 
 # lsb_release is not always installed
 if ! source /etc/os-release &>/dev/null; then
     echo "no idea what to do with this OS: I was not able to access /etc/os-release"
     echo ""
-    clean_up
+    clean_up 2
 elif [[ "$ID" == "ubuntu" ]] || [[ "$ID" == "debian" ]] || [[ "$ID" == "arch"* ]]; then
     CERT_BASE="/etc/ssl/certs"
     KEY_BASE="/etc/ssl/private"
@@ -57,7 +60,7 @@ else
     echo "no idea what to do with OS: $ID"
     echo "please amend the script accordingly"
     echo ""
-    clean_up
+    clean_up 2
 fi
 
 usage() {