Detection script changes

public/detect_linux.sh

@@ -2,7 +2,24 @@
 
 DISTNAME=unknown
 DISTVER=
-if [ -f /etc/solus-release ]; then
+
+function resetDistVer {
+  DISTNAME=unknown
+  DISTVER=
+}
+
+if [ -f /etc/fedora-release ]; then
+  . /etc/os-release
+  if [ "$VERSION_ID" == "29" ]; then
+    DISTNAME=fedora
+    DISTVER=29
+  elif [ "$VERSION_ID" == "28" ]; then
+    DISTNAME=fedora
+    DISTVER=28
+  else
+    resetDistVer
+  fi
+elif [ -f /etc/solus-release ]; then
   DISTNAME=solus
 elif [ -f /etc/lsb-release ]; then
   . /etc/lsb-release
@@ -13,33 +30,37 @@ elif [ -f /etc/lsb-release ]; then
       if [ "$DISTVER" = "19" ] || [ "$DISTVER" = "19.1" ]; then
         DISTNAME=ubuntu
         DISTVER=18.04
+      else
+        resetDistVer
       fi
     elif [ "$DISTNAME" = "elementary" ]; then
       if [ "$DISTVER" = "5.0" ]; then
         DISTNAME=ubuntu
         DISTVER=18.04
+      else
+        resetDistVer
       fi
     else
-      DISTNAME=unknown
-      DISTVER=
+      resetDistVer
     fi
+  else
+    resetDistVer
   fi
 elif [ -f /etc/debian_version ]; then
   DISTNAME=debian
   DISTVER=$(head -1 /etc/debian_version|awk -F. '{print $1}')
+  if [ "$DISTVER" != "9" ]; then
+    resetDistVer
+  fi
 elif [ -f /etc/os-release ]; then
   . /etc/os-release
   if [ "$ID" == "arch" ]; then
     DISTNAME=arch
-  elif [ "$ID" == "fedora" ]; then
-    if [ "$VERSION_ID" == "29" ]; then
-      DISTNAME=fedora
-      DISTVER=29
-    elif [ "$VERSION_ID" == "28" ]; then
-      DISTNAME=fedora
-      DISTVER=28
-    fi
+  else
+    resetDistVer
   fi
+else
+  resetDistVer
 fi
 
 echo ${DISTNAME}${DISTVER}