#!/bin/bash

selection=${1-clipboard}
cache_dir=/tmp/clipmenu/

mkdir -p "$cache_dir"

while sleep 1; do
    data=$(xsel --"$selection"; printf x)
    data=${data%x}
    md5=$(md5sum <<< "$data")
    md5=${md5%% *}

    cat > "$cache_dir/$md5" <<< "$data"
done