Check if file exists before downloading

dialectdownloader.sh

@@ -56,6 +56,15 @@ do
                 sed 's/\//_/g' \
             )"
 
+            filename="$(basename $dialect_url): $dialect_info.mp3"
+            filepath="$directory/$filename"
+
+            if [ -f "$filepath" ]
+            then
+                echo "Skipping existing file $filepath"
+                continue
+            fi
+
             dialect_html="$(wget -q -O - $dialect_url)"
 
             dialect_download="$( \
@@ -64,10 +73,8 @@ do
                 head -1 \
             )"
 
-            filename="$(basename $dialect_url): $dialect_info.mp3"
-
             echo "Downloading $filename to $directory"
-            wget -q -O "$directory/$filename" $dialect_download
+            wget -q -O "$filepath" $dialect_download
         done
     done
 done