System parser refactor

main.sh

@@ -6,12 +6,11 @@ echo "Backify is starting, looking for configuration file..." >&2
 config='backup.cfg'
 config_secured='sbackup.cfg'
 
-if [ -f "$config" ]
+if [ ! -f "$config" ] 
     then
-    echo "Configuration found." >&2
-else
-    echo "Configuration not found" >&2
-    exit
+    echo "Error: Config file not found: $config" >&2
+    echo "Please create a config file or specify the location of an existing file." >&2
+    exit 1
 fi
 
 if grep -E -q -v '^#|^[^ ]*=[^;]*' "$config"; then
@@ -34,12 +33,15 @@ function system {
 
   if [ -f /etc/redhat-release ] 
   then
+    echo "Discovered Red Hat-based OS..."
     system='rhel'
-fi
-
-if [ -f /etc/lsb-release ] 
+  elif [ -f /etc/lsb-release ] 
   then
+    echo "Discovered Ubuntu-based OS..."
     system='ubuntu'
+  else
+    echo "Error: Unable to detect OS type."
+    exit 1
   fi
 
 echo "Discovered $system based OS..." >&2