tag -a "$(tag -Nl source_file)" destination_file

#!/usr/bin/env zsh

if [[ $# -ne 2 ]]; then
    print >&2 "usage: copy_xattrs SOURCE_FILE TARGET_FILE"
    exit 1
fi

set -e

IFS=$'n' attr_names=($(xattr "$1"))
for attr in $attr_names; do
    value=$(xattr -p -x "$attr" "$1" | tr -d " n")
    xattr -w -x "$attr" "$value" "$2"
done