Something

#!/bin/sh -ePROG="${0##*/}"tmpdir=exit_handler(){        local rc=$?        trap - EXIT        [ -z "$tmpdir" ] ||                rm -rf -- "$tmpdir"        exit $rc}trap exit_handler HUP PIPE INT QUIT TERM EXITtmpdir="$(mktemp -dt "$PROG.XXXXXXXX")"cat >"$tmpdir/pkg.tar"hsh "$@" "$tmpdir/pkg.tar"