Upload screenshot to imagebin and copy URL to clipboard. OS X only

cap.sh

#!/usr/bin/env bash
set -e

declare fn
function cleanup {
  rm "$fn"
}
trap cleanup EXIT

fn="$(mktemp -t cap).png"
screencapture -i "$fn"
mimetype=$(file --mime-type -b "$fn")
if [[ "$mimetype" == image/* ]]; then
  if upload=$(curl http://imagebin.ca/upload.php -F file="@$fn" 2>/dev/null); then
    echo "$upload" | grep '^url:' | sed 's/^url://' | pbcopy
    afplay -v 2 /System/Library/Sounds/Glass.aiff &
  fi
fi