..

strippdf

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+#!/usr/bin/zsh
+
+usage() {
+  echo "Usage: $0 [-q quality] [--no-transitions] input.pdf"
+  echo "  -q quality    Set output quality level (0: screen, 1: ebook (default), 2: prepress)"
+  echo "  --no-transitions  Remove transitional pages (keep only the last frame before slide number changes)"
+  exit 1
+}
+
+# Default values
+quality=1
+remove_transitions=0
+
+# Parse arguments
+while [[ $# -gt 0 ]]; do
+  case "$1" in
+    -q)
+      shift
+      if [[ "$1" =~ ^[0-2]$ ]]; then
+        quality=$1
+      else
+        echo "Invalid quality level. Use 0 (screen), 1 (ebook), or 2 (prepress)."
+        exit 1
+      fi
+      ;;
+    --no-transitions)
+      remove_transitions=1
+      ;;
+    -*)
+      echo "Unknown option: $1"
+      usage
+      ;;
+    *)
+      input_file="$1"
+      ;;
+  esac
+  shift
+done
+
+# Check if input file is provided
+if [[ -z "$input_file" ]]; then
+  echo "Error: No input file provided."
+  usage
+fi
+
+# Set Ghostscript quality settings
+case "$quality" in
+  0) gs_quality="/screen" ;;
+  1) gs_quality="/ebook" ;;
+  2) gs_quality="/prepress" ;;
+esac
+
+# Create temporary file
+temp_file=$(mktemp)
+
+# Uncompress PDF and remove annotations
+pdftk "$input_file" output - uncompress | sed '/^\/Annots/d' > "$temp_file.pdf"
+
+if [[ $remove_transitions -eq 1 ]]; then
+  # Run dump_data once and capture its output.
+  dump=$(pdftk "$temp_file.pdf" dump_data)
+  
+  # Get the total number of pages.
+  total_pages=$(echo "$dump" | awk '/^NumberOfPages/ { print $2 }')
+  
+  # Read all PageLabelNewIndex values into an array.
+  new_indexes=($(echo "$dump" | awk '/^PageLabelNewIndex/ { print $2 }'))
+  
+  endings=()
+  
+  # Compute end pages for all groups except the first.
+  # For each boundary between slides:
+  #   If the difference is >1, the previous slide spans multiple pages:
+  #      so use (current new index – 1) as the end page.
+  #   If the difference is exactly 1, then the previous slide is a single page;
+  #      so keep its PageLabelNewIndex.
+  for ((i=1; i < ${#new_indexes[@]}; i++)); do
+    prev=${new_indexes[i-1]}
+    curr=${new_indexes[i]}
+    if (( curr - prev == 1 )); then
+      endings+=($prev)
+    else
+      endings+=($((curr - 1)))
+    fi
+  done
+  
+  # For the final slide group:
+  last_index=${new_indexes[-1]}
+  if (( total_pages - last_index == 0 )); then
+    # Single–frame slide.
+    endings+=($last_index)
+  else
+    # Multi–frame slide.
+    endings+=($total_pages)
+  fi
+  
+  # Remove duplicates (if any) and sort in ascending order.
+  pages_to_keep=($(echo "${endings[@]}" | tr ' ' '\n' | sort -n | uniq))
+  
+  # (Optional: Uncomment to debug)
+  # echo "Pages to keep: ${pages_to_keep[@]}"
+  
+  if [[ ${#pages_to_keep[@]} -gt 0 ]]; then
+    pdftk "$temp_file.pdf" cat ${pages_to_keep[@]} output "$temp_file-clean.pdf"
+    if [[ $? -ne 0 ]]; then
+      echo "Error: Failed to remove transitional pages."
+      rm "$temp_file.pdf"
+      exit 1
+    fi
+    mv "$temp_file-clean.pdf" "$temp_file.pdf"
+  else
+    echo "Warning: No transitional pages identified; keeping full document."
+  fi
+fi
+
+# Compress the PDF
+gs -sDEVICE=pdfwrite -dCompatibilityLevel=1.4 -dPDFSETTINGS="$gs_quality" -dNOPAUSE -dQUIET -dBATCH -sOutputFile="${input_file%.pdf}-compressed.pdf" "$temp_file.pdf"
+
+# Clean up
+rm "$temp_file.pdf"
+

update-discord

@@ -0,0 +1,7 @@
+#!/usr/bin/zsh
+url=`curl -I -L "https://discord.com/api/download?platform=linux&format=deb" 2>&1 | grep -i location | grep -oE "https.*deb"`
+
+if [ ! -e "/tmp/discord.deb" ]; then
+	wget -O /tmp/discord.deb $url
+fi
+dpkg -iE /tmp/discord.deb