/usr/bin/dcmd is in devscripts 2.17.6+deb9u2.
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 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 | #!/bin/sh
#
# dcmd: expand file lists of .dsc/.changes files in the command line
#
# Copyright (C) 2008 Romain Francoise <rfrancoise@debian.org>
# Copyright (C) 2008 Christoph Berg <myon@debian.org>
# Copyright (C) 2008 Adam D. Barratt <adsb@debian.org>
#
# 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 program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301 USA
# Usage:
#
# dcmd replaces any reference to a .dsc or .changes file in the command
# line with the list of files in its 'Files' section, plus the
# .dsc/.changes file itself.
#
# $ dcmd sha1sum rcs_5.7-23_amd64.changes
# f61254e2b61e483c0de2fc163321399bbbeb43f1  rcs_5.7-23.dsc
# 7a2b283b4c505d8272a756b230486a9232376771  rcs_5.7-23.diff.gz
# e3bac970a57a6b0b41c28c615f2919c931a6cb68  rcs_5.7-23_amd64.deb
# c531310b18773d943249cfaa8b539a9b6e14b8f4  rcs_5.7-23_amd64.changes
# $
PROGNAME=`basename $0`
version () {
    echo \
"This is $PROGNAME, from the Debian devscripts package, version 2.17.6+deb9u2
This code is copyright 2008 by Romain Francoise, all rights reserved.
This program comes with ABSOLUTELY NO WARRANTY.
You are free to redistribute this code under the terms of the
GNU General Public License, version 2 or later."
}
usage()
{
    printf "Usage: %s [options] [command] [dsc or changes file] [...]\n" $PROGNAME
}
endswith()
{
    case $1 in
	*$2) return 0 ;;
	*) return 1;;
    esac
}
# Instead of parsing the file completely as the previous Python
# implementation did (using python-debian), let's just select lines
# that look like they might be part of the file list.
RE="^ [0-9a-f]{32} [0-9]+ ((([a-zA-Z0-9_.-]+/)?[a-zA-Z0-9_.-]+|-) ([a-zA-Z]+|-) )?(.*)$"
maybe_expand()
{
    local dir
    local sedre
    if [ -e "$1" ] && (endswith "$1" .changes || endswith "$1" .dsc || endswith "$1" .buildinfo); then
	# Need to escape whatever separator is being used in sed expression so
	# it doesn't prematurely end the s command
	dir=$(dirname "$1" | sed 's/,/\\,/g')
	if [ "$(echo "$1" | cut -b1-2)" != "./" ]; then
	    sedre="\."
	fi
	sed --regexp-extended -n "s,$RE,$dir/\5,p" <"$1" | sed "s,^$sedre/,,"
    fi
}
DSC=1; BCHANGES=1; SCHANGES=1; ARCHDEB=1; INDEPDEB=1; TARBALL=1; DIFF=1
CHANGES=1; DEB=1; ARCHUDEB=1; INDEPUDEB=1; UDEB=1; BUILDINFO=1;
FILTERED=0; FAIL_MISSING=1
EXTRACT_PACKAGE_NAME=0
SORT=0
TAC=0
while [ $# -gt 0 ]; do
    TYPE=""
    case "$1" in
	--version|-v) version; exit 0;;
	--help|-h) usage; exit 0;;
	--no-fail-on-missing|-r) FAIL_MISSING=0;;
	--fail-on-missing) FAIL_MISSING=1;;
	--package|-p) EXTRACT_PACKAGE_NAME=1;;
	--sort|-s) SORT=1;;
	--tac|-t) TAC=1;;
	--) shift; break;;
	--no-*)
	    TYPE=${1#--no-}
	    case "$FILTERED" in
		1)  echo "$PROGNAME: Can't combine --foo and --no-foo options" >&2;
		    exit 1;;
		0)  FILTERED=-1;;
	    esac;;
	--**)
	    TYPE=${1#--}
	    case "$FILTERED" in
		-1) echo "$PROGNAME: Can't combine --foo and --no-foo options" >&2;
		    exit 1;;
		0)  FILTERED=1; DSC=0; BCHANGES=0; SCHANGES=0; CHANGES=0
		    ARCHDEB=0; INDEPDEB=0; DEB=0; ARCHUDEB=0; INDEPUDEB=0
		    UDEB=0; TARBALL=0; DIFF=0; BUILDINFO=0;;
	    esac;;
	*) break;;
    esac
    case "$TYPE" in
	"") ;;
	dsc) [ "$FILTERED" = "1" ] && DSC=1 || DSC=0;;
	buildinfo) [ "$FILTERED" = "1" ] && BUILDINFO=1 || BUILDINFO=0;;
	changes) [ "$FILTERED" = "1" ] &&
	    { BCHANGES=1; SCHANGES=1; CHANGES=1; } ||
	    { BCHANGES=0; SCHANGES=0; CHANGES=0; } ;;
	bchanges) [ "$FILTERED" = "1" ] && BCHANGES=1 || BCHANGES=0;;
	schanges) [ "$FILTERED" = "1" ] && SCHANGES=1 || SCHANGES=1;;
	deb) [ "$FILTERED" = "1" ] &&
	    { ARCHDEB=1; INDEPDEB=1; DEB=1; } ||
	    { ARCHDEB=0; INDEPDEB=0; DEB=0; };;
	archdeb) [ "$FILTERED" = "1" ] && ARCHDEB=1 || ARCHDEB=0;;
	indepdeb) [ "$FILTERED" = "1" ] && INDEPDEB=1 || INDEPDEB=0;;
	udeb) [ "$FILTERED" = "1" ] &&
	    { ARCHUDEB=1; INDEPUDEB=1; UDEB=1; } ||
	    { ARCHUDEB=0; INDEPUDEB=0; UDEB=0; };;
	archudeb) [ "$FILTERED" = "1" ] && ARCHUDEB=1 || ARCHUDEB=0;;
	indepudeb) [ "$FILTERED" = "1" ] && INDEPUDEB=1 || INDEPUDEB=0;;
	tar|orig) [ "$FILTERED" = "1" ] && TARBALL=1 || TARBALL=0;;
	diff|debtar) [ "$FILTERED" = "1" ] && DIFF=1 || DIFF=0;;
	*) echo "$PROGNAME: Unknown option '$1'" >&2; exit 1;;
    esac
    shift
done
cmd=
args=""
while [ $# -gt 0 ]; do
    arg="$1"
    shift
    temparg="$(maybe_expand "$arg")"
    if [ -z "$temparg" ]; then
	if [ -z "$cmd" ]; then
	    cmd="$arg"
	    continue
	fi
	# Not expanded, so simply add to argument list
	args="$args
$arg"
    else
	SEEN_INDEPDEB=0; SEEN_ARCHDEB=0; SEEN_SCHANGES=0; SEEN_BCHANGES=0
	SEEN_INDEPUDEB=0; SEEN_ARCHUDEB=0; SEEN_UDEB=0;
	SEEN_TARBALL=0; SEEN_DIFF=0; SEEN_DSC=0; SEEN_BUILDINFO=0;
	MISSING=0
	newarg=""
	# Output those items from the expanded list which were
	# requested, and record which files are contained in the list
	eval "$(echo "$temparg" | while read THISARG; do
	    if [ -z "$THISARG" ]; then
		# Skip
		:
	    elif endswith "$THISARG" _all.deb; then
		[ "$INDEPDEB" = "0" ] || echo "newarg=\"\$newarg
$THISARG\";"
		echo "SEEN_INDEPDEB=1;"
	    elif endswith "$THISARG" .deb; then
		[ "$ARCHDEB" = "0" ] || echo "newarg=\"\$newarg
$THISARG\";"
		echo "SEEN_ARCHDEB=1;"
	    elif endswith "$THISARG" _all.udeb; then
		[ "$INDEPUDEB" = "0" ] || echo "newarg=\"\$newarg
$THISARG\";"
		echo "SEEN_INDEPUDEB=1;"
	    elif endswith "$THISARG" .udeb; then
		[ "$ARCHUDEB" = "0" ] || echo "newarg=\"\$newarg
$THISARG\";"
		echo "SEEN_ARCHUDEB=1;"
	    elif endswith "$THISARG" .debian.tar.gz || \
		 endswith "$THISARG" .debian.tar.xz || \
		 endswith "$THISARG" .debian.tar.bz2; then
		[ "$DIFF" = "0" ] || echo "newarg=\"\$newarg
$THISARG\";"
		echo "SEEN_DIFF=1;"
	    elif endswith "$THISARG" .tar.gz || \
		 endswith "$THISARG" .tar.xz || \
		 endswith "$THISARG" .tar.lzma || \
		 endswith "$THISARG" .tar.bz2; then
		[ "$TARBALL" = "0" ] || echo "newarg=\"\$newarg
$THISARG\";"
		echo "SEEN_TARBALL=1;"
	    elif endswith "$THISARG" _source.changes; then
		[ "$SCHANGES" = "0" ] || echo "newarg=\"\$newarg
$THISARG\";"
		echo "SEEN_SCHANGES=1;"
	    elif endswith "$THISARG" .changes; then
		[ "$BCHANGES" = "0" ] || echo "newarg\"\$newarg
$THISARG\";"
		echo "SEEN_BCHANGES=1;"
	    elif endswith "$THISARG" .dsc; then
		[ "$DSC" = "0" ] || echo "newarg=\"\$newarg
$THISARG\";"
		echo "SEEN_DSC=1;"
	    elif endswith "$THISARG" .buildinfo; then
		[ "$BUILDINFO" = "0" ] || echo "newarg=\"\$newarg
$THISARG\";"
		echo "SEEN_BUILDINFO=1;"
	    elif endswith "$THISARG" .diff.gz; then
		[ "$DIFF" = "0" ] || echo "newarg=\"\$newarg
$THISARG\";"
		echo "SEEN_DIFF=1;"
	    elif [ "$FILTERED" != "1" ]; then
		# What is it? Output anyway
		echo "newarg=\"\$newarg
$THISARG\";"
	    fi
	done)"
	INCLUDEARG=1
	if endswith "$arg" _source.changes; then
	    [ "$SCHANGES" = "1" ] || INCLUDEARG=0
	    SEEN_SCHANGES=1
	elif endswith "$arg" .changes; then
	    [ "$BCHANGES" = "1" ] || INCLUDEARG=0
	    SEEN_BCHANGES=1
	elif endswith "$arg" .dsc; then
	    [ "$DSC" = "1" ] || INCLUDEARG=0
	    SEEN_DSC=1
	elif endswith "$arg" .buildinfo; then
	    [ "$BUILDINFO" = "1" ] || INCLUDEARG=0
	    SEEN_BUILDINFO=1
	fi
	if [ "$FAIL_MISSING" = "1" ] && [ "$FILTERED" = "1" ]; then
	    if [ "$CHANGES" = "1" ]; then
		if [ "$SEEN_SCHANGES" = "0" ] && [ "$SEEN_BCHANGES" = "0" ]; then
		    MISSING=1; echo "$arg: .changes fiie not found" >&2
		fi
	    else
		if [ "$SCHANGES" = "1" ] && [ "$SEEN_SCHANGES" = "0" ]; then
		    MISSING=1; echo "$arg: source .changes file not found" >&2
		fi
		if [ "$BCHANGES" = "1" ] && [ "$SEEN_BCHANGES" = "0" ]; then
		    MISSING=1; echo "$arg: binary .changes file not found" >&2
		fi
	    fi
	    if [ "$DEB" = "1" ]; then
		if  [ "$SEEN_INDEPDEB" = "0" ] && [ "$SEEN_ARCHDEB" = "0" ]; then
		    MISSING=1; echo "$arg: binary packages not found" >&2
		fi
	    else
		if [ "$INDEPDEB" = "1" ] && [ "$SEEN_INDEPDEB" = "0" ]; then
		    MISSING=1; echo "$arg: arch-indep packages not found" >&2
		fi
		if [ "$ARCHDEB" = "1" ] && [ "$SEEN_ARCHDEB" = "0" ]; then
		    MISSING=1; echo "$arg: arch-dep packages not found" >&2
		fi
	    fi
	    if [ "$UDEB" = "1" ]; then
		if [ "$SEEN_INDEPUDEB" = "0" ] && [ "$SEEN_ARCHUDEB" = "0" ]; then
		    MISSING=1; echo "$arg: udeb packages not found" >&2
		fi
	    else
		if [ "$INDEPUDEB" = "1" ] && [ "$SEEN_INDEPUDEB" = "0" ]; then
		    MISSING=1; echo "$arg: arch-indep udeb packages not found" >&2
		fi
		if [ "$ARCHUDEB" = "1" ] && [ "$SEEN_ARCHUDEB" = "0" ]; then
		    MISSING=1; echo "$arg: arch-dep udeb packages not found" >&2
		fi
	    fi
	    if [ "$BUILDINFO" = "1" ] && [ "$SEEN_BUILDINFO" = "0" ]; then
		MISSING=1; echo "$arg: .buildinfo file not found" >&2
	    fi
	    if [ "$DSC" = "1" ] && [ "$SEEN_DSC" = "0" ]; then
		MISSING=1; echo "$arg: .dsc file not found" >&2
	    fi
	    if [ "$TARBALL" = "1" ] && [ "$SEEN_TARBALL" = "0" ]; then
		MISSING=1; echo "$arg: upstream tar not found" >&2
	    fi
	    if [ "$DIFF" = "1" ] && [ "$SEEN_DIFF" = "0" ]; then
		MISSING=1; echo "$arg: Debian debian.tar/diff not found" >&2
	    fi
	    [ "$MISSING" = "0" ] || exit 1
	fi
	args="$args
$newarg"
	[ "$INCLUDEARG" = "0" ] || args="$args
$arg"
    fi
done
IFS='
'
if [ "$EXTRACT_PACKAGE_NAME" = "1" ]; then
    packages=""
    for arg in $args; do
        packages="$packages
$(echo "$arg" |sed s/_.*//)"
    done
    args="$packages"
fi
if [ "$SORT" = "1" ]; then
    args="$(echo "$args"| sort -)"
fi
if [ "$TAC" = "1" ]; then
    args="$(echo "$args"| tac -)"
fi
if [ -z "$cmd" ]; then
    for arg in $args; do
	echo $arg
    done
    exit 0
fi
exec $cmd $args
 |