diff --git a/scripts/shell/gdl-update-todo.sh b/scripts/shell/gdl-update-todo.sh
index 17a6fd1..f90b546 100755
--- a/scripts/shell/gdl-update-todo.sh
+++ b/scripts/shell/gdl-update-todo.sh
@@ -1,8 +1,88 @@
 #!/bin/bash
 
+# TODO, warning! This script is horrible and insecure with background jobs
+
+show_help() {
+  echo "Usage: $0 [--abort-on-found|-a] [--parallel|-p] [--custom-grep-search|-c <string>]"
+  echo "Options:"
+  echo "  --abort-on-found|-a         (optional) The script will update each gallery download until it finds an already downloaded file."
+  echo "  --parallel|-a               (optional) The script will update each gallery download in parallel, with background jobs."
+  echo "  --custom-grep-search|-c     (optional) Includes a string to filter the URLs."
+}
+
+should_abort_on_found=false
+should_parallel_download=false
+custom_grep_search=''
+
+while [ "$#" -gt 0 ]; do
+  case "$1" in
+    --help|-h) show_help; exit ;;
+    --abort-on-found|-a) should_abort_on_found=true; shift ;;
+    --parallel|-p) should_parallel_download=true; shift ;;
+    --custom-grep-search|-c) custom_grep_search="$2"; shift 2 ;;
+    *) shift ;;
+  esac
+done
+
 gallery_dl_path=/mnt/e/home/Documents/data-hoarding
 cd "$gallery_dl_path"
 
-urls=($(grep -Eo "(http|https)://[a-zA-Z0-9./?=_%:-]*" -i "$gallery_dl_path/todo.md"))
+urls=($(grep -v "filter" -i "$gallery_dl_path/todo.md" | grep -Eo "(http|https)://[a-zA-Z0-9./?~?=_%:-]*"))
 
-for url in ${urls[@]}; do gallery-dl --abort 1 $url; done
+if [ ! -z "$custom_grep_search" ]; then
+  filtered_urls=()
+
+  for url in "${urls[@]}"; do
+    if [[ "$url" == *"$custom_grep_search"* ]]; then
+      filtered_urls+=("$url")
+    fi
+  done
+
+  urls=(${filtered_urls[@]})
+
+  # debug
+  if false; then
+    echo "Filtered URLs:"
+
+    for url in ${filtered_urls[@]}; do
+      echo "    $url"
+    done
+
+    exit 0
+  fi
+fi
+
+# debug
+if false; then
+  echo "URLs:"
+
+  for url in ${urls[@]}; do
+    echo "    $url"
+  done
+
+  exit 0
+fi
+
+gdl_command_base='gallery-dl'
+
+if $should_abort_on_found; then
+  gdl_command_base+=' --abort 1'
+fi
+
+sleep 5 &
+
+for url in ${urls[@]}; do
+  gdl_command="$gdl_command_base $url"
+
+  if $should_parallel_download; then
+    gdl_command+=' &'
+  fi
+
+  # debug
+  if false; then
+    echo "Command:"
+    echo "    $gdl_command"
+  fi
+
+  eval $gdl_command
+done