out1="$(mktemp "$TMP/compare_dirs_output.XXXXXX")"
out2="$(mktemp "$TMP/compare_dirs_output.XXXXXX")"
pushd "$dir1" &>/dev/null
out1="$(mktemp "$TMP/compare_dirs_output.XXXXXX")"
out2="$(mktemp "$TMP/compare_dirs_output.XXXXXX")"
pushd "$dir1" &>/dev/null