fixed if statements

rename_episode.sh

@@ -14,15 +14,15 @@ read -p "Series? " $so
 read -p "Episode? " $eo
 
 for file in "$src/*"; do
-  if [ $so != "" ];then
-    s=$so
-  else
+  if [[ -z $so ]];then
     s=`echo "$file" | grep -o -P "$sscheme"`
-  fi
-  if [ $eo != "" ];then
-    e=$eo
   else
+    s=$so
+  fi
+  if [[ -z $eo ]];then
     e=`echo "$file" | grep -o -P "$escheme"`
+  else
+    e=$eo
   fi
   ext="${file##*.}"
   echo 'ln "$src/$file" "$dest/$name.S$s.E$e.$ext"'