/usr/bin/adsh is in apt-dater 1.0.2+git20151216-1.
This file is owned by root:root, with mode 0o755.
The actual contents of the file can be viewed below.
| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 | #!/bin/sh
# apt-dater - terminal-based remote package update manager
#
# Authors:
#   Thomas Liske <liske@ibh.de>
#
# Copyright Holder:
#   2008-2015 (C) IBH IT-Service GmbH [https://www.ibh.de/apt-dater/]
#
# License:
#   This program is free software; you can redistribute it and/or modify
#   it under the terms of the GNU General Public License as published by
#   the Free Software Foundation; either version 2 of the License, or
#   (at your option) any later version.
#
#   This program is distributed in the hope that it will be useful,
#   but WITHOUT ANY WARRANTY; without even the implied warranty of
#   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
#   GNU General Public License for more details.
#
#   You should have received a copy of the GNU General Public License
#   along with this package; if not, write to the Free Software
#   Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301 USA
#
argv=$@
sport=0
while getopts :-1246AaCfgKkMNnqsTtVvXxYyb:c:D:E:e:F:I:i:L:l:m:O:o:p:Q:R:S:W:w: OPT; do
    case $OPT in
	-p)
	    sport=$OPTARG
	    ;;
    esac
done
shift $((OPTIND-1))
shost="$1"
exec apt-dater -s "$shost:$sport" $argv
 |