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📄 a2disconf(15.86 KB)
📄 a2dismod(15.86 KB)
📄 a2dissite(15.86 KB)
📄 a2enconf(15.86 KB)
📄 a2enmod(15.86 KB)
📄 a2ensite(15.86 KB)
📄 a2query(9.6 KB)
📄 add-shell(1.03 KB)
📄 addgroup(47.25 KB)
📄 adduser(47.25 KB)
📄 agetty(67.49 KB)
📄 apache2(712.5 KB)
📄 apache2ctl(7.19 KB)
📄 apachectl(7.19 KB)
📄 arp(66.13 KB)
📄 arpd(104.48 KB)
📄 badblocks(34.25 KB)
📄 blkdeactivate(15.96 KB)
📄 blkdiscard(34.31 KB)
📄 blkid(122.34 KB)
📄 blkzone(78.31 KB)
📄 blockdev(78.31 KB)
📄 bridge(152.54 KB)
📄 capsh(53.29 KB)
📄 chcpu(46.3 KB)
📄 check_forensic(952 B)
📄 chgpasswd(66.29 KB)
📄 chmem(66.31 KB)
📄 chpasswd(62.36 KB)
📄 chroot(46.98 KB)
📄 cpgr(60.43 KB)
📄 cppw(60.43 KB)
📄 ctrlaltdel(38.3 KB)
📄 dcb(144.6 KB)
📄 debugfs(233.83 KB)
📄 delgroup(16.33 KB)
📄 deluser(16.33 KB)
📄 devlink(220.98 KB)
📄 dhclient(2.63 MB)
📄 dhclient-script(14.21 KB)
📄 dmsetup(166.98 KB)
📄 dmstats(166.98 KB)
📄 dpkg-fsys-usrunmess(16.99 KB)
📄 dpkg-preconfigure(3.83 KB)
📄 dpkg-reconfigure(4.38 KB)
📄 dumpe2fs(30.31 KB)
📄 e2freefrag(14.3 KB)
📄 e2fsck(348.27 KB)
📄 e2image(54.45 KB)
📄 e2label(114.52 KB)
📄 e2mmpstatus(30.31 KB)
📄 e2scrub(7.12 KB)
📄 e2scrub_all(5.27 KB)
📄 e2undo(22.3 KB)
📄 e4crypt(26.3 KB)
📄 e4defrag(30.23 KB)
📄 faillock(14.24 KB)
📄 filefrag(18.26 KB)
📄 findfs(14.3 KB)
📄 fsck(54.36 KB)
📄 fsck.cramfs(42.37 KB)
📄 fsck.ext2(348.27 KB)
📄 fsck.ext3(348.27 KB)
📄 fsck.ext4(348.27 KB)
📄 fsck.minix(122.34 KB)
📄 fsfreeze(14.3 KB)
📄 fstab-decode(14.23 KB)
📄 fstrim(74.31 KB)
📄 genl(116.51 KB)
📄 getcap(14.23 KB)
📄 getpcaps(14.23 KB)
📄 getty(67.49 KB)
📄 groupadd(99.04 KB)
📄 groupdel(90.85 KB)
📄 groupmems(66.33 KB)
📄 groupmod(99.01 KB)
📄 grpck(66.3 KB)
📄 grpconv(58.14 KB)
📄 grpunconv(58.14 KB)
📄 halt(1.29 MB)
📄 httxt2dbm(14.23 KB)
📄 hwclock(86.44 KB)
📄 iconvconfig(30.84 KB)
📄 ifconfig(82.01 KB)
📄 ifdown(86.16 KB)
📄 ifquery(86.16 KB)
📄 ifup(86.16 KB)
📄 init(90.38 KB)
📄 installkernel(2.6 KB)
📄 invoke-rc.d(16.13 KB)
📄 ip(674.82 KB)
📄 ipmaddr(18.56 KB)
📄 iptunnel(26.55 KB)
📄 isosize(30.31 KB)
📄 killall5(26.31 KB)
📄 ldattach(34.31 KB)
📄 ldconfig(959.84 KB)
📄 locale-gen(1.38 KB)
📄 logsave(14.09 KB)
📄 losetup(114.42 KB)
📄 make-ssl-cert(6.65 KB)
📄 mii-tool(27.08 KB)
📄 mke2fs(138.58 KB)
📄 mkfs(14.3 KB)
📄 mkfs.bfs(34.31 KB)
📄 mkfs.cramfs(42.24 KB)
📄 mkfs.ext2(138.58 KB)
📄 mkfs.ext3(138.58 KB)
📄 mkfs.ext4(138.58 KB)
📄 mkfs.minix(110.32 KB)
📄 mkhomedir_helper(22.27 KB)
📄 mklost+found(14.23 KB)
📄 mkswap(114.31 KB)
📄 nameif(14.65 KB)
📄 newusers(102.92 KB)
📄 nologin(14.23 KB)
📄 pam-auth-update(20.79 KB)
📄 pam_getenv(2.82 KB)
📄 pam_namespace_helper(467 B)
📄 pam_timestamp_check(14.24 KB)
📄 paperconfig(4.07 KB)
📄 phpdismod(7.11 KB)
📄 phpenmod(7.11 KB)
📄 phpquery(6.24 KB)
📄 pivot_root(14.3 KB)
📄 plipconfig(14.48 KB)
📄 poweroff(1.29 MB)
📄 pwck(58.26 KB)
📄 pwconv(54.13 KB)
📄 pwhistory_helper(18.24 KB)
📄 pwunconv(54.17 KB)
📄 rarp(37.13 KB)
📄 readprofile(34.34 KB)
📄 reboot(1.29 MB)
📄 remove-shell(1.08 KB)
📄 resize2fs(62.3 KB)
📄 rmt(59.02 KB)
📄 rmt-tar(59.02 KB)
📄 route(69.17 KB)
📄 rtacct(44.37 KB)
📄 rtcwake(46.31 KB)
📄 rtmon(112.45 KB)
📄 runlevel(1.29 MB)
📄 runuser(70.31 KB)
📄 service(8.89 KB)
📄 setcap(14.23 KB)
📄 shadowconfig(2.22 KB)
📄 shutdown(1.29 MB)
📄 slattach(41.2 KB)
📄 split-logfile(2.36 KB)
📄 sshd(1.21 MB)
📄 start-stop-daemon(43.42 KB)
📄 sulogin(54.31 KB)
📄 swaplabel(18.3 KB)
📄 swapoff(22.3 KB)
📄 swapon(50.3 KB)
📄 switch_root(18.3 KB)
📄 sysctl(30.31 KB)
📄 tarcat(936 B)
📄 tc(574 KB)
📄 telinit(1.29 MB)
📄 tipc(152.6 KB)
📄 tune2fs(114.52 KB)
📄 unix_chkpwd(38.24 KB)
📄 unix_update(38.24 KB)
📄 update-ca-certificates(5.29 KB)
📄 update-fonts-alias(5.71 KB)
📄 update-fonts-dir(3.98 KB)
📄 update-fonts-scale(6.1 KB)
📄 update-gsfontmap(470 B)
📄 update-locale(2.99 KB)
📄 update-passwd(38.49 KB)
📄 update-rc.d(17.33 KB)
📄 update-shells(3.89 KB)
📄 useradd(155.8 KB)
📄 userdel(110.95 KB)
📄 usermod(143.61 KB)
📄 validlocale(1.73 KB)
📄 vdpa(116.66 KB)
📄 vigr(72.64 KB)
📄 vipw(72.64 KB)
📄 wipefs(46.31 KB)
📄 zic(58.73 KB)
📄 zramctl(114.42 KB)

Editing: update-shells

#!/bin/sh
# SPDX-License-Identifier: GPL-2.0-or-later
# Copyright 2021 Helmut Grohne <helmut@subdivi.de>

# A "hashset" is a shell variable containing a sequence of elements separated
# and surrounded by hash (#) characters. None of the elements may contain a
# hash character. The character is thus chosen, because it initiates a comment
# in /etc/shells. All variables ending in _SHELLS in this file are hashsets.

set -e

# Check whether hashset $1 contains element $2.
hashset_contains() {
	case "$1" in
		*"#$2#"*) return 0 ;;
		*) return 1 ;;
	esac
}

log() {
	if [ "$VERBOSE" = 1 ]; then
		echo "$*"
	fi
}

ROOT=${DPKG_ROOT:-}
VERBOSE=0
NOACT=0

while [ $# -gt 0 ]; do
	case "$1" in
		--help)
			cat <<EOF
usage: $0 [options]

--no-act    Do not move the actual update into place
 --verbose   Be more verbose
 --root DIR  Operate on the given chroot, defaults to /
EOF
			exit 0
		;;
		--no-act)
			NOACT=1
		;;
		--root)
			shift
			if [ "$#" -lt 1 ]; then
				echo "missing argument to --root" 1>&2
				exit 1
			fi
			ROOT=$1
		;;
		--verbose)
			VERBOSE=1
		;;
		*)
			echo "unrecognized option $1" 1>&2
			exit 1
		;;
	esac
	shift
done

PKG_DIR="$ROOT/usr/share/debianutils/shells.d"
STATE_FILE="$ROOT/var/lib/shells.state"
TEMPLATE_ETC_FILE="$ROOT/usr/share/debianutils/shells"
TARGET_ETC_FILE="$ROOT/etc/shells"
SOURCE_ETC_FILE="$TARGET_ETC_FILE"
NEW_ETC_FILE="$TARGET_ETC_FILE.tmp"
NEW_STATE_FILE="$STATE_FILE.tmp"

if ! test -e "$SOURCE_ETC_FILE"; then
	SOURCE_ETC_FILE="$TEMPLATE_ETC_FILE"
fi

PKG_SHELLS='#'
LC_COLLATE=C.UTF-8  # glob in reproducible order
for f in "$TEMPLATE_ETC_FILE" "$PKG_DIR/"*; do
	test -f "$f" || continue
	while IFS='#' read -r line _; do
		[ -n "$line" ] || continue
		PKG_SHELLS="$PKG_SHELLS$line#"
		realshell=$(dpkg-realpath --root "$ROOT" "$(dirname "$line")")/$(basename "$line")
		if [ "$line" != "$realshell" ]; then
			PKG_SHELLS="$PKG_SHELLS$realshell#"
		fi
	done < "$f"
done

STATE_SHELLS='#'
if [ -e "$STATE_FILE" ] ; then
	while IFS='#' read -r line _; do
		[ -n "$line" ] && STATE_SHELLS="$STATE_SHELLS$line#"
	done < "$STATE_FILE"
fi

cleanup() {
	rm -f "$NEW_ETC_FILE" "$NEW_STATE_FILE"
}
trap cleanup EXIT

: > "$NEW_ETC_FILE"
ETC_SHELLS='#'
while IFS= read -r line; do
	shell=${line%%#*}
	# copy all comment lines, packaged shells and local additions
	if [ -z "$shell" ] ||
			hashset_contains "$PKG_SHELLS" "$shell" ||
			! hashset_contains "$STATE_SHELLS" "$shell"; then
		if [ -z "$shell" ] || ! hashset_contains "$ETC_SHELLS" "$shell"; then
			echo "$line" >> "$NEW_ETC_FILE"
			ETC_SHELLS="$ETC_SHELLS$shell#"
		fi
	else
		log "removing shell $shell"
	fi
done < "$SOURCE_ETC_FILE"

: > "$NEW_STATE_FILE"
saved_IFS=$IFS
IFS='#'
set -f
# shellcheck disable=SC2086 # word splitting intended, globbing disabled
set -- ${PKG_SHELLS###}
set +f
IFS=$saved_IFS
for shell; do
	echo "$shell" >> "$NEW_STATE_FILE"
	# add shells that are neither already present nor locally removed
	if ! hashset_contains "$ETC_SHELLS" "$shell" &&
			! hashset_contains "$STATE_SHELLS" "$shell"; then
		echo "$shell" >> "$NEW_ETC_FILE"
		log "adding shell $shell"
	fi
done

if [ "$NOACT" = 0 ]; then
	if [ -e "$STATE_FILE" ]; then
		chmod --reference="${STATE_FILE}" "${NEW_STATE_FILE}" || chmod $(stat -c %a "${STATE_FILE}") "${NEW_STATE_FILE}"
		chown --reference="${STATE_FILE}" "${NEW_STATE_FILE}" || chown $(stat -c %U "${STATE_FILE}") "${NEW_STATE_FILE}"
	else
		chmod 0644 "$NEW_STATE_FILE"
	fi
	chmod --reference="${SOURCE_ETC_FILE}" "${NEW_ETC_FILE}" || chmod $(stat -c %a "${SOURCE_ETC_FILE}") "${NEW_ETC_FILE}"
	chown --reference="${SOURCE_ETC_FILE}" "${NEW_ETC_FILE}" || chown $(stat -c %U "${SOURCE_ETC_FILE}") "${NEW_ETC_FILE}"
	sync -d "$NEW_ETC_FILE" "$NEW_STATE_FILE"
	mv -Z "${NEW_ETC_FILE}" "${TARGET_ETC_FILE}" || mv "${NEW_ETC_FILE}" "${TARGET_ETC_FILE}"
	sync "$TARGET_ETC_FILE"
	sync "$(dirname "$TARGET_ETC_FILE")"
	mv "$NEW_STATE_FILE" "$STATE_FILE"
	sync "$STATE_FILE"
	sync "$(dirname "$STATE_FILE")"
	trap "" EXIT
fi

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Editing: update-shells

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