http://www.snip2code.com/Snippet/107987/updated-clbin--supports-images-through-p

gistfile1.txt

#!/usr/bin/env bash
# Upload text/images to clbin.com from the command line
# License: ISC http://www.isc.org/downloads/software-support-policy/isc-license/
set -euf
clip() {
    if command -v xclip &> /dev/null; then
        xclip -selection clip <<< "$@"
    elif command -v xsel &> /dev/null; then
        xsel -b -i <<< "$@"
    fi
}
defer(){
  #close enough
  trapstr="$1;${trapstr:-exit}"
  trap "$trapstr" INT TERM EXIT KILL
}

get_imgfile(){
  tmp=$(mktemp)
  touch "$tmp"
  trap "rm -f $tmp" INT TERM EXIT KILL
  cat "${1?must provide file as \$1}" > "$tmp"
  mime="$(file --mime-type "$tmp")"
  mime="${mime##* }"
  case "$mime" in
      image/png|image/jpg|image/jpeg|image/gif)
          newtmp=${tmp}.${mime##*/}
          mv "$tmp" "$newtmp"
          echo "$newtmp"
          exit 0;;
        *)
          exit 0;;
  esac
}

if [[ $# != 0 ]]; then
    if [[ $@ == "-h" || $@ == "--help" ]]; then
        echo "Usage:"
        echo "  clbin <file>"
        echo "  <command> | clbin"
        echo "  'clbin' alone reads STDIN till ^D is pressed"
        echo "Supported files: text files and png/jpg/jpeg/gif images"
        exit 1;
    fi
    [[ ! -e "$1" ]] && echo "File not found." && exit 2;
    img=$(get_tmpfile "$1")
    trap "rm -f $img" INT TERM EXIT KILL
    mime="$(file --mime-type "$1")"
    mime="${mime##* }"
    case "$mime" in
        image/png|image/jpg|image/jpeg|image/gif)
            resp="$(curl -sfF "clbin=@$img" https://clbin.com)"
            ;;
        text/*)
            resp="$(cat "$1" | curl -sfF "clbin=<-" https://clbin.com)"
            ;;
        *)
            echo "Unsupported file type: $mime"
            exit 3;;
    esac
    if [[ "$?" != 0 ]]; then
        echo "An error has occured. curl exit code: $?"
        exit 4
    fi
  else
    this=$(mktemp)
    trap "rm -f $this" INT TERM EXIT KILL
  
    cat > "$this"
    img=$(get_imgfile "$this")
    if test -z "$img";then
      resp="$(cat "$this"| curl -sfF "clbin=<-" https://clbin.com)"
    else
      resp="$(curl -sfF "clbin=@${img}" https://clbin.com)"
    fi
fi

echo "$resp"
clip "$resp"