Gecko [ demo-moodle.acesy.nl ]

Name	Size	Permission
2to3-2.7	96 B	-rwxr-xr-x
[	58.34 KB	-rwxr-xr-x
ab	58.34 KB	-rwxr-xr-x
addpart	30.23 KB	-rwxr-xr-x
apt	18.38 KB	-rwxr-xr-x
apt-cache	86.46 KB	-rwxr-xr-x
apt-cdrom	30.46 KB	-rwxr-xr-x
apt-config	26.38 KB	-rwxr-xr-x
apt-get	46.46 KB	-rwxr-xr-x
apt-key	27.28 KB	-rwxr-xr-x
apt-mark	62.46 KB	-rwxr-xr-x
arch	38.37 KB	-rwxr-xr-x
awk	158.74 KB	-rwxr-xr-x
b2sum	58.37 KB	-rwxr-xr-x
base32	42.34 KB	-rwxr-xr-x
base64	42.34 KB	-rwxr-xr-x
basename	38.34 KB	-rwxr-xr-x
bash	1.13 MB	-rwxr-xr-x
bashbug	6.63 KB	-rwxr-xr-x
bunzip2	38.23 KB	-rwxr-xr-x
bzcat	38.23 KB	-rwxr-xr-x
bzcmp	2.17 KB	-rwxr-xr-x
bzdiff	2.17 KB	-rwxr-xr-x
bzegrep	3.69 KB	-rwxr-xr-x
bzexe	4.76 KB	-rwxr-xr-x
bzfgrep	3.69 KB	-rwxr-xr-x
bzgrep	3.69 KB	-rwxr-xr-x
bzip2	38.23 KB	-rwxr-xr-x
bzip2recover	18.15 KB	-rwxr-xr-x
bzless	1.27 KB	-rwxr-xr-x
bzmore	1.27 KB	-rwxr-xr-x
c_rehash	6.18 KB	-rwxr-xr-x
captoinfo	90.41 KB	-rwxr-xr-x
cat	42.4 KB	-rwxr-xr-x
catchsegv	3.25 KB	-rwxr-xr-x
cautious-launcher	853 B	-rwxr-xr-x
chage	82.53 KB	-rwxr-sr-x
chattr	14.31 KB	-rwxr-xr-x
chcon	70.34 KB	-rwxr-xr-x
checkgid	14.15 KB	-rwxr-xr-x
chfn	83.07 KB	-rwsr-xr-x
chgrp	70.34 KB	-rwxr-xr-x
chmod	62.37 KB	-rwxr-xr-x
choom	50.23 KB	-rwxr-xr-x
chown	70.34 KB	-rwxr-xr-x
chrt	38.23 KB	-rwxr-xr-x
chsh	51.8 KB	-rwsr-xr-x
cksum	38.34 KB	-rwxr-xr-x
clear	14.31 KB	-rwxr-xr-x
clear_console	14.23 KB	-rwxr-xr-x
cmp	50.09 KB	-rwxr-xr-x
comm	42.37 KB	-rwxr-xr-x
compose	18.05 KB	-rwxr-xr-x
corelist	14.73 KB	-rwxr-xr-x
cp	150.37 KB	-rwxr-xr-x
cpan	7.96 KB	-rwxr-xr-x
cpan5.30-x86_64-linux-gnu	7.98 KB	-rwxr-xr-x
cpio	161.63 KB	-rwxr-xr-x
crontab	42.7 KB	-rwxr-sr-x
csplit	54.37 KB	-rwxr-xr-x
curl	234.23 KB	-rwxr-xr-x
curl-config	6.29 KB	-rwxr-xr-x
cut	46.37 KB	-rwxr-xr-x
dash	126.77 KB	-rwxr-xr-x
date	106.37 KB	-rwxr-xr-x
dd	78.38 KB	-rwxr-xr-x
deb-systemd-helper	20.83 KB	-rwxr-xr-x
deb-systemd-invoke	4.33 KB	-rwxr-xr-x
debconf	2.79 KB	-rwxr-xr-x
debconf-apt-progress	11.27 KB	-rwxr-xr-x
debconf-communicate	608 B	-rwxr-xr-x
debconf-copydb	1.68 KB	-rwxr-xr-x
debconf-escape	647 B	-rwxr-xr-x
debconf-set-selections	2.87 KB	-rwxr-xr-x
debconf-show	1.78 KB	-rwxr-xr-x
delpart	30.23 KB	-rwxr-xr-x
df	90.95 KB	-rwxr-xr-x
dh_python2	1.03 KB	-rwxr-xr-x
diff	214.34 KB	-rwxr-xr-x
diff3	66.21 KB	-rwxr-xr-x
dir	138.81 KB	-rwxr-xr-x
dircolors	46.34 KB	-rwxr-xr-x
dirname	38.34 KB	-rwxr-xr-x
dmesg	82.46 KB	-rwxr-xr-x
dnsdomainname	26.23 KB	-rwxr-xr-x
domainname	26.23 KB	-rwxr-xr-x
dpkg	302.68 KB	-rwxr-xr-x
dpkg-deb	174.54 KB	-rwxr-xr-x
dpkg-divert	150.59 KB	-rwxr-xr-x
dpkg-maintscript-helper	20.03 KB	-rwxr-xr-x
dpkg-query	162.59 KB	-rwxr-xr-x
dpkg-split	122.48 KB	-rwxr-xr-x
dpkg-statoverride	62.27 KB	-rwxr-xr-x
dpkg-trigger	82.49 KB	-rwxr-xr-x
du	106.37 KB	-rwxr-xr-x
echo	38.34 KB	-rwxr-xr-x
echo_supervisord_conf	419 B	-rwxr-xr-x
edit	18.05 KB	-rwxr-xr-x
egrep	28 B	-rwxr-xr-x
enc2xs	41.12 KB	-rwxr-xr-x
encguess	2.99 KB	-rwxr-xr-x
env	42.34 KB	-rwxr-xr-x
expand	42.37 KB	-rwxr-xr-x
expiry	30.58 KB	-rwxr-sr-x
expr	54.34 KB	-rwxr-xr-x
factor	78.37 KB	-rwxr-xr-x
faillog	22.59 KB	-rwxr-xr-x
fallocate	34.23 KB	-rwxr-xr-x
false	38.34 KB	-rwxr-xr-x
fcgistarter	14.15 KB	-rwxr-xr-x
fgrep	28 B	-rwxr-xr-x
file	26.47 KB	-rwxr-xr-x
fincore	34.27 KB	-rwxr-xr-x
find	312.66 KB	-rwxr-xr-x
findmnt	71.41 KB	-rwxr-xr-x
flock	34.3 KB	-rwxr-xr-x
fmt	46.34 KB	-rwxr-xr-x
fold	42.34 KB	-rwxr-xr-x
free	26.23 KB	-rwxr-xr-x
funzip	26.15 KB	-rwxr-xr-x
fuser	39.24 KB	-rwxr-xr-x
getconf	34.29 KB	-rwxr-xr-x
getent	38.65 KB	-rwxr-xr-x
getopt	22.23 KB	-rwxr-xr-x
git	2.95 MB	-rwxr-xr-x
git-receive-pack	2.95 MB	-rwxr-xr-x
git-shell	1.69 MB	-rwxr-xr-x
git-upload-archive	2.95 MB	-rwxr-xr-x
git-upload-pack	2.95 MB	-rwxr-xr-x
gpasswd	86.39 KB	-rwsr-xr-x
gpgv	447.15 KB	-rwxr-xr-x
grep	194.47 KB	-rwxr-xr-x
groups	38.34 KB	-rwxr-xr-x
gunzip	2.29 KB	-rwxr-xr-x
gzexe	6.23 KB	-rwxr-xr-x
gzip	95.21 KB	-rwxr-xr-x
h2ph	28.54 KB	-rwxr-xr-x
h2xs	59.44 KB	-rwxr-xr-x
head	46.37 KB	-rwxr-xr-x
hostid	38.34 KB	-rwxr-xr-x
hostname	26.23 KB	-rwxr-xr-x
htcacheclean	38.16 KB	-rwxr-xr-x
htdbm	26.15 KB	-rwxr-xr-x
htdigest	14.15 KB	-rwxr-xr-x
htpasswd	26.15 KB	-rwxr-xr-x
i386	26.5 KB	-rwxr-xr-x
iconv	66.41 KB	-rwxr-xr-x
id	46.37 KB	-rwxr-xr-x
infocmp	62.38 KB	-rwxr-xr-x
infotocap	90.41 KB	-rwxr-xr-x
install	154.41 KB	-rwxr-xr-x
instmodsh	4.27 KB	-rwxr-xr-x
ionice	30.23 KB	-rwxr-xr-x
ipcmk	34.3 KB	-rwxr-xr-x
ipcrm	34.23 KB	-rwxr-xr-x
ipcs	66.23 KB	-rwxr-xr-x
ischroot	14.2 KB	-rwxr-xr-x
join	54.37 KB	-rwxr-xr-x
json_pp	4.56 KB	-rwxr-xr-x
kill	30.23 KB	-rwxr-xr-x
killall	31.27 KB	-rwxr-xr-x
last	46.23 KB	-rwxr-xr-x
lastb	46.23 KB	-rwxr-xr-x
lastlog	31.66 KB	-rwxr-xr-x
lcf	7.6 KB	-rwxr-xr-x
ldd	5.3 KB	-rwxr-xr-x
less	175.84 KB	-rwxr-xr-x
lessecho	14.31 KB	-rwxr-xr-x
lessfile	8.36 KB	-rwxr-xr-x
lesskey	23.72 KB	-rwxr-xr-x
lesspipe	8.36 KB	-rwxr-xr-x
libnetcfg	15.41 KB	-rwxr-xr-x
link	38.34 KB	-rwxr-xr-x
linux32	26.5 KB	-rwxr-xr-x
linux64	26.5 KB	-rwxr-xr-x
ln	74.38 KB	-rwxr-xr-x
locale	57.56 KB	-rwxr-xr-x
locale-check	14.16 KB	-rwxr-xr-x
localedef	326.96 KB	-rwxr-xr-x
logger	50.82 KB	-rwxr-xr-x
login	55.77 KB	-rwxr-xr-x
logname	38.34 KB	-rwxr-xr-x
logresolve	14.16 KB	-rwxr-xr-x
ls	138.81 KB	-rwxr-xr-x
lsattr	14.31 KB	-rwxr-xr-x
lsblk	130.23 KB	-rwxr-xr-x
lscpu	98.23 KB	-rwxr-xr-x
lsipc	94.23 KB	-rwxr-xr-x
lslocks	38.55 KB	-rwxr-xr-x
lslogins	66.23 KB	-rwxr-xr-x
lsmem	66.23 KB	-rwxr-xr-x
lsns	50.23 KB	-rwxr-xr-x
lzcat	78.5 KB	-rwxr-xr-x
lzcmp	6.48 KB	-rwxr-xr-x
lzdiff	6.48 KB	-rwxr-xr-x
lzegrep	5.5 KB	-rwxr-xr-x
lzfgrep	5.5 KB	-rwxr-xr-x
lzgrep	5.5 KB	-rwxr-xr-x
lzless	1.76 KB	-rwxr-xr-x
lzma	78.5 KB	-rwxr-xr-x
lzmainfo	14.23 KB	-rwxr-xr-x
lzmore	2.11 KB	-rwxr-xr-x
mailq	34.3 KB	-rwxr-xr-x
man	320 B	-rwxr-xr-x
mawk	158.74 KB	-rwxr-xr-x
mcookie	34.3 KB	-rwxr-xr-x
md5sum	46.37 KB	-rwxr-xr-x
md5sum.textutils	46.37 KB	-rwxr-xr-x
mesg	14.23 KB	-rwxr-xr-x
mkdir	86.34 KB	-rwxr-xr-x
mkfifo	66.34 KB	-rwxr-xr-x
mknod	70.34 KB	-rwxr-xr-x
mktemp	46.34 KB	-rwxr-xr-x
more	42.15 KB	-rwxr-xr-x
mount	54.23 KB	-rwsr-xr-x
mountpoint	14.23 KB	-rwxr-xr-x
mt	86.78 KB	-rwxr-xr-x
mt-gnu	86.78 KB	-rwxr-xr-x
mv	146.38 KB	-rwxr-xr-x
myisam_ftdump	6.34 MB	-rwxr-xr-x
mysql	6.95 MB	-rwxr-xr-x
mysql_config_editor	166.16 KB	-rwxr-xr-x
mysqladmin	6.81 MB	-rwxr-xr-x
mysqlanalyze	6.81 MB	-rwxr-xr-x
mysqlcheck	6.81 MB	-rwxr-xr-x
mysqldump	6.88 MB	-rwxr-xr-x
mysqldumpslow	7.51 KB	-rwxr-xr-x
mysqlimport	6.8 MB	-rwxr-xr-x
mysqloptimize	6.81 MB	-rwxr-xr-x
mysqlpump	7.18 MB	-rwxr-xr-x
mysqlrepair	6.81 MB	-rwxr-xr-x
mysqlreport	38.1 KB	-rwxr-xr-x
mysqlshow	6.8 MB	-rwxr-xr-x
mysqlslap	6.81 MB	-rwxr-xr-x
namei	34.23 KB	-rwxr-xr-x
nawk	158.74 KB	-rwxr-xr-x
nc	42.64 KB	-rwxr-xr-x
nc.openbsd	42.64 KB	-rwxr-xr-x
netcat	42.64 KB	-rwxr-xr-x
newaliases	34.3 KB	-rwxr-xr-x
newgrp	43.73 KB	-rwsr-xr-x
nice	42.34 KB	-rwxr-xr-x
nisdomainname	26.23 KB	-rwxr-xr-x
nl	42.43 KB	-rwxr-xr-x
nohup	42.34 KB	-rwxr-xr-x
nproc	42.34 KB	-rwxr-xr-x
nsenter	34.43 KB	-rwxr-xr-x
numfmt	66.4 KB	-rwxr-xr-x
od	70.37 KB	-rwxr-xr-x
openssl	735.68 KB	-rwxr-xr-x
pager	175.84 KB	-rwxr-xr-x
partx	118.23 KB	-rwxr-xr-x
passwd	66.61 KB	-rwsr-xr-x
paste	42.37 KB	-rwxr-xr-x
patch	190.52 KB	-rwxr-xr-x
pathchk	38.34 KB	-rwxr-xr-x
pdb2	45.02 KB	-rwxr-xr-x
pdb2.7	45.02 KB	-rwxr-xr-x
pdb3	61.21 KB	-rwxr-xr-x
pdb3.8	61.21 KB	-rwxr-xr-x
peekfd	14.15 KB	-rwxr-xr-x
perl	3.32 MB	-rwxr-xr-x
perl5.30-x86_64-linux-gnu	14.3 KB	-rwxr-xr-x
perl5.30.0	3.32 MB	-rwxr-xr-x
perlbug	45.28 KB	-rwxr-xr-x
perldoc	125 B	-rwxr-xr-x
perlivp	10.61 KB	-rwxr-xr-x
perlthanks	45.28 KB	-rwxr-xr-x
pgrep	30.24 KB	-rwxr-xr-x
phar	14.54 KB	-rwxr-xr-x
phar.phar	14.54 KB	-rwxr-xr-x
phar.phar7.4	14.54 KB	-rwxr-xr-x
phar7.4	14.54 KB	-rwxr-xr-x
php	4.55 MB	-rwxr-xr-x
php7.4	4.55 MB	-rwxr-xr-x
piconv	8.16 KB	-rwxr-xr-x
pidof	26.38 KB	-rwxr-xr-x
pidproxy	393 B	-rwxr-xr-x
pinky	42.37 KB	-rwxr-xr-x
pkill	30.24 KB	-rwxr-xr-x
pl2pm	4.43 KB	-rwxr-xr-x
pldd	22.37 KB	-rwxr-xr-x
pmap	34.24 KB	-rwxr-xr-x
pod2html	4.04 KB	-rwxr-xr-x
pod2man	14.68 KB	-rwxr-xr-x
pod2text	10.55 KB	-rwxr-xr-x
pod2usage	3.86 KB	-rwxr-xr-x
podchecker	3.57 KB	-rwxr-xr-x
podselect	2.47 KB	-rwxr-xr-x
pr	74.43 KB	-rwxr-xr-x
print	18.05 KB	-rwxr-xr-x
printenv	38.34 KB	-rwxr-xr-x
printf	58.34 KB	-rwxr-xr-x
prlimit	38.74 KB	-rwxr-xr-x
prove	13.33 KB	-rwxr-xr-x
prtstat	22.23 KB	-rwxr-xr-x
ps	134.46 KB	-rwxr-xr-x
pslog	14.15 KB	-rwxr-xr-x
pstree	35.16 KB	-rwxr-xr-x
pstree.x11	35.16 KB	-rwxr-xr-x
ptar	3.47 KB	-rwxr-xr-x
ptardiff	2.57 KB	-rwxr-xr-x
ptargrep	4.29 KB	-rwxr-xr-x
ptx	78.4 KB	-rwxr-xr-x
pwd	42.34 KB	-rwxr-xr-x
pwdx	14.23 KB	-rwxr-xr-x
pwgen	31.4 KB	-rwxr-xr-x
py3clean	7.63 KB	-rwxr-xr-x
py3compile	11.84 KB	-rwxr-xr-x
py3versions	11.44 KB	-rwxr-xr-x
pyclean	4.03 KB	-rwxr-xr-x
pycompile	11.62 KB	-rwxr-xr-x
pydoc2	79 B	-rwxr-xr-x
pydoc2.7	79 B	-rwxr-xr-x
pydoc3	79 B	-rwxr-xr-x
pydoc3.8	79 B	-rwxr-xr-x
pygettext2	21.56 KB	-rwxr-xr-x
pygettext2.7	21.56 KB	-rwxr-xr-x
pygettext3	21.03 KB	-rwxr-xr-x
pygettext3.8	21.03 KB	-rwxr-xr-x
python2	3.46 MB	-rwxr-xr-x
python2.7	3.46 MB	-rwxr-xr-x
python3	5.23 MB	-rwxr-xr-x
python3.8	5.23 MB	-rwxr-xr-x
pyversions	14.76 KB	-rwxr-xr-x
rbash	1.13 MB	-rwxr-xr-x
rcp	114.3 KB	-rwxr-xr-x
readlink	50.34 KB	-rwxr-xr-x
realpath	50.37 KB	-rwxr-xr-x
rename.ul	22.23 KB	-rwxr-xr-x
renice	14.23 KB	-rwxr-xr-x
reset	30.31 KB	-rwxr-xr-x
resizepart	62.23 KB	-rwxr-xr-x
rev	14.23 KB	-rwxr-xr-x
rgrep	30 B	-rwxr-xr-x
rlogin	770.95 KB	-rwxr-xr-x
rm	70.37 KB	-rwxr-xr-x
rmail	18.15 KB	-rwxr-xr-x
rmdir	46.34 KB	-rwxr-xr-x
rotatelogs	26.23 KB	-rwxr-xr-x
rsh	770.95 KB	-rwxr-xr-x
run-mailcap	18.05 KB	-rwxr-xr-x
run-parts	26.51 KB	-rwxr-xr-x
runcon	38.34 KB	-rwxr-xr-x
savelog	10.24 KB	-rwxr-xr-x
scp	114.3 KB	-rwxr-xr-x
script	54.23 KB	-rwxr-xr-x
scriptreplay	30.23 KB	-rwxr-xr-x
sdiff	50.09 KB	-rwxr-xr-x
sed	118.45 KB	-rwxr-xr-x
see	18.05 KB	-rwxr-xr-x
select-editor	2.38 KB	-rwxr-xr-x
sensible-browser	1.2 KB	-rwxr-xr-x
sensible-editor	1.14 KB	-rwxr-xr-x
sensible-pager	452 B	-rwxr-xr-x
seq	50.34 KB	-rwxr-xr-x
setarch	26.5 KB	-rwxr-xr-x
setpriv	46.23 KB	-rwxr-xr-x
setsid	14.23 KB	-rwxr-xr-x
setterm	46.23 KB	-rwxr-xr-x
sftp	166.51 KB	-rwxr-xr-x
sg	43.73 KB	-rwsr-xr-x
sh	126.77 KB	-rwxr-xr-x
sha1sum	50.37 KB	-rwxr-xr-x
sha224sum	58.37 KB	-rwxr-xr-x
sha256sum	58.37 KB	-rwxr-xr-x
sha384sum	66.37 KB	-rwxr-xr-x
sha512sum	66.37 KB	-rwxr-xr-x
shasum	9.74 KB	-rwxr-xr-x
shred	62.37 KB	-rwxr-xr-x
shuf	58.34 KB	-rwxr-xr-x
skill	30.23 KB	-rwxr-xr-x
slabtop	22.23 KB	-rwxr-xr-x
sleep	38.34 KB	-rwxr-xr-x
slogin	770.95 KB	-rwxr-xr-x
snice	30.23 KB	-rwxr-xr-x
sort	114.63 KB	-rwxr-xr-x
splain	18.7 KB	-rwxr-xr-x
split	58.77 KB	-rwxr-xr-x
ssh	770.95 KB	-rwxr-xr-x
ssh-add	362.28 KB	-rwxr-xr-x
ssh-agent	342.29 KB	-rwxr-sr-x
ssh-argv0	1.42 KB	-rwxr-xr-x
ssh-copy-id	10.41 KB	-rwxr-xr-x
ssh-keygen	466.3 KB	-rwxr-xr-x
ssh-keyscan	454.3 KB	-rwxr-xr-x
stat	86.37 KB	-rwxr-xr-x
stdbuf	50.34 KB	-rwxr-xr-x
stty	82.37 KB	-rwxr-xr-x
su	66.23 KB	-rwsr-xr-x
sum	46.34 KB	-rwxr-xr-x
supervisorctl	403 B	-rwxr-xr-x
supervisord	399 B	-rwxr-xr-x
sync	38.34 KB	-rwxr-xr-x
tabs	18.3 KB	-rwxr-xr-x
tac	42.34 KB	-rwxr-xr-x
tail	70.4 KB	-rwxr-xr-x
tar	437.61 KB	-rwxr-xr-x
taskset	34.23 KB	-rwxr-xr-x
tee	42.37 KB	-rwxr-xr-x
tempfile	14.02 KB	-rwxr-xr-x
test	54.34 KB	-rwxr-xr-x
tic	90.41 KB	-rwxr-xr-x
timeout	42.77 KB	-rwxr-xr-x
tload	22.24 KB	-rwxr-xr-x
toe	22.3 KB	-rwxr-xr-x
top	126.05 KB	-rwxr-xr-x
touch	98.37 KB	-rwxr-xr-x
tput	26.34 KB	-rwxr-xr-x
tr	50.34 KB	-rwxr-xr-x
true	38.34 KB	-rwxr-xr-x
truncate	42.34 KB	-rwxr-xr-x
tset	30.31 KB	-rwxr-xr-x
tsort	42.34 KB	-rwxr-xr-x
tty	38.34 KB	-rwxr-xr-x
tzselect	15.02 KB	-rwxr-xr-x
ucf	39.73 KB	-rwxr-xr-x
ucfq	18.91 KB	-rwxr-xr-x
ucfr	10.47 KB	-rwxr-xr-x
umount	38.23 KB	-rwsr-xr-x
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Code Editor : apt-key

#!/bin/sh

set -e
unset GREP_OPTIONS GPGHOMEDIR CURRENTTRAP
export IFS="$(printf "\n\b")"

MASTER_KEYRING='/usr/share/keyrings/ubuntu-master-keyring.gpg'
eval "$(apt-config shell MASTER_KEYRING APT::Key::MasterKeyring)"
ARCHIVE_KEYRING='/usr/share/keyrings/ubuntu-archive-keyring.gpg'
eval "$(apt-config shell ARCHIVE_KEYRING APT::Key::ArchiveKeyring)"
REMOVED_KEYS='/usr/share/keyrings/ubuntu-archive-removed-keys.gpg'
eval "$(apt-config shell REMOVED_KEYS APT::Key::RemovedKeys)"
ARCHIVE_KEYRING_URI='http://archive.ubuntu.com/ubuntu/project/ubuntu-archive-keyring.gpg'
eval "$(apt-config shell ARCHIVE_KEYRING_URI APT::Key::ArchiveKeyringURI)"

aptkey_echo() { echo "$@"; }

find_gpgv_status_fd() {
   while [ -n "$1" ]; do
	if [ "$1" = '--status-fd' ]; then
		shift
		echo "$1"
		break
	fi
	shift
   done
}
GPGSTATUSFD="$(find_gpgv_status_fd "$@")"

apt_warn() {
    if [ -z "$GPGHOMEDIR" ]; then
	echo >&2 'W:' "$@"
    else
	echo 'W:' "$@" > "${GPGHOMEDIR}/aptwarnings.log"
    fi
    if [ -n "$GPGSTATUSFD" ]; then
	echo >&${GPGSTATUSFD} '[APTKEY:] WARNING' "$@"
    fi
}
apt_error() {
    if [ -z "$GPGHOMEDIR" ]; then
	echo >&2 'E:' "$@"
    else
	echo 'E:' "$@" > "${GPGHOMEDIR}/aptwarnings.log"
    fi
    if [ -n "$GPGSTATUSFD" ]; then
	echo >&${GPGSTATUSFD} '[APTKEY:] ERROR' "$@"
    fi
}

cleanup_gpg_home() {
    if [ -z "$GPGHOMEDIR" ]; then return; fi
    if [ -s "$GPGHOMEDIR/aptwarnings.log" ]; then
	cat >&2 "$GPGHOMEDIR/aptwarnings.log"
    fi
    if command_available 'gpgconf'; then
	GNUPGHOME="${GPGHOMEDIR}" gpgconf --kill all >/dev/null 2>&1 || true
    fi
    rm -rf "$GPGHOMEDIR"
}

# gpg needs (in different versions more or less) files to function correctly,
# so we give it its own homedir and generate some valid content for it later on
create_gpg_home() {
    # for cases in which we want to cache a homedir due to expensive setup
    if [ -n "$GPGHOMEDIR" ]; then
	return
    fi
    if [ -n "$TMPDIR" ]; then
	# tmpdir is a directory and current user has rwx access to it
	# same tests as in apt-pkg/contrib/fileutl.cc GetTempDir()
	if [ ! -d "$TMPDIR" ] || [ ! -r "$TMPDIR" ] || [ ! -w "$TMPDIR" ] || [ ! -x "$TMPDIR" ]; then
	    unset TMPDIR
	fi
    fi
    GPGHOMEDIR="$(mktemp --directory --tmpdir 'apt-key-gpghome.XXXXXXXXXX')"
    CURRENTTRAP="${CURRENTTRAP} cleanup_gpg_home;"
    trap "${CURRENTTRAP}" 0 HUP INT QUIT ILL ABRT FPE SEGV PIPE TERM
    if [ -z "$GPGHOMEDIR" ]; then
	apt_error "Could not create temporary gpg home directory in $TMPDIR (wrong permissions?)"
	exit 28
    fi
    chmod 700 "$GPGHOMEDIR"
}

requires_root() {
	if [ "$(id -u)" -ne 0 ]; then
		apt_error "This command can only be used by root."
		exit 1
	fi
}

command_available() {
    if [ -x "$1" ]; then return 0; fi
    # command -v "$1" >/dev/null 2>&1 # not required by policy, see #747320
    # which "$1" >/dev/null 2>&1 # is in debianutils (essential) but not on non-debian systems
    local OLDIFS="$IFS"
    IFS=:
    for p in $PATH; do
	if [ -x "${p}/${1}" ]; then
	    IFS="$OLDIFS"
	    return 0
	fi
    done
    IFS="$OLDIFS"
    return 1
}

escape_shell() {
    echo "$@" | sed -e "s#'#'\"'\"'#g"
}

get_fingerprints_of_keyring() {
    aptkey_execute "$GPG_SH" --keyring "$1" --with-colons --fingerprint | while read publine; do
	# search for a public key
	if [ "${publine%%:*}" != 'pub' ]; then continue; fi
	# search for the associated fingerprint (should be the very next line)
	while read fprline; do
	   if [ "${fprline%%:*}" = 'sub' ]; then break; # should never happen
	   elif [ "${fprline%%:*}" != 'fpr' ]; then continue; fi
	   echo "$fprline" | cut -d':' -f 10
	done
	# order in the keyring shouldn't be important
    done | sort
}

add_keys_with_verify_against_master_keyring() {
    ADD_KEYRING="$1"
    MASTER="$2"

if [ ! -f "$ADD_KEYRING" ]; then
	apt_error "Keyring '$ADD_KEYRING' to be added not found"
	return
    fi
    if [ ! -f "$MASTER" ]; then
	apt_error "Master-Keyring '$MASTER' not found"
	return
    fi

# when adding new keys, make sure that the archive-master-keyring
    # is honored. so:
    #   all keys that are exported must have a valid signature
    #   from a key in the $distro-master-keyring
    add_keys="$(get_fingerprints_of_keyring "$ADD_KEYRING")"
    all_add_keys="$(aptkey_execute "$GPG_SH" --keyring "$ADD_KEYRING" --with-colons --list-keys | grep ^[ps]ub | cut -d: -f5)"
    master_keys="$(aptkey_execute "$GPG_SH" --keyring "$MASTER" --with-colons --list-keys | grep ^pub | cut -d: -f5)"

# ensure there are no colisions LP: #857472
    for all_add_key in $all_add_keys; do
	for master_key in $master_keys; do
            if [ "$all_add_key" = "$master_key" ]; then
                echo >&2 "Keyid collision for '$all_add_key' detected, operation aborted"
                return 1
            fi
        done
    done

for add_key in $add_keys; do
        # export the add keyring one-by-one
	local TMP_KEYRING="${GPGHOMEDIR}/tmp-keyring.gpg"
	aptkey_execute "$GPG_SH" --batch --yes --keyring "$ADD_KEYRING" --output "$TMP_KEYRING" --export "$add_key"
	if ! aptkey_execute "$GPG_SH" --batch --yes --keyring "$TMP_KEYRING" --import "$MASTER" > "${GPGHOMEDIR}/gpgoutput.log" 2>&1; then
	    cat >&2 "${GPGHOMEDIR}/gpgoutput.log"
	    false
	fi
	# check if signed with the master key and only add in this case
	ADDED=0
	for master_key in $master_keys; do
	    if aptkey_execute "$GPG_SH" --keyring "$TMP_KEYRING" --check-sigs --with-colons "$add_key" \
	       | grep '^sig:!:' | cut -d: -f5 | grep -q "$master_key"; then
		aptkey_execute "$GPG_SH" --batch --yes --keyring "$ADD_KEYRING" --export "$add_key" \
		   | aptkey_execute "$GPG" --batch --yes --import
		ADDED=1
	    fi
	done
	if [ $ADDED = 0 ]; then
	    echo >&2 "Key '$add_key' not added. It is not signed with a master key"
	fi
	rm -f "${TMP_KEYRING}"
    done
}

# update the current archive signing keyring from a network URI
# the archive-keyring keys needs to be signed with the master key
# (otherwise it does not make sense from a security POV)
net_update() {
    local APT_DIR='/'
    eval $(apt-config shell APT_DIR Dir)

# Disabled for now as code is insecure (LP: #1013639 (and 857472, 1013128))
    APT_KEY_NET_UPDATE_ENABLED=""
    eval $(apt-config shell APT_KEY_NET_UPDATE_ENABLED APT::Key::Net-Update-Enabled)
    if [ -z "$APT_KEY_NET_UPDATE_ENABLED" ]; then
        exit 1
    fi

if [ -z "$ARCHIVE_KEYRING_URI" ]; then
	apt_error 'Your distribution is not supported in net-update as no uri for the archive-keyring is set'
	exit 1
    fi
    # in theory we would need to depend on wget for this, but this feature
    # isn't usable in debian anyway as we have no keyring uri nor a master key
    if ! command_available 'wget'; then
	apt_error 'wget is required for a network-based update, but it is not installed'
	exit 1
    fi
    if [ ! -d "${APT_DIR}/var/lib/apt/keyrings" ]; then
	mkdir -p "${APT_DIR}/var/lib/apt/keyrings"
    fi
    keyring="${APT_DIR}/var/lib/apt/keyrings/$(basename "$ARCHIVE_KEYRING_URI")"
    old_mtime=0
    if [ -e $keyring ]; then
	old_mtime=$(stat -c %Y "$keyring")
    fi
    (cd  "${APT_DIR}/var/lib/apt/keyrings"; wget --timeout=90 -q -N "$ARCHIVE_KEYRING_URI")
    if [ ! -e "$keyring" ]; then
	return
    fi
    new_mtime=$(stat -c %Y "$keyring")
    if [ $new_mtime -ne $old_mtime ]; then
	aptkey_echo "Checking for new archive signing keys now"
	add_keys_with_verify_against_master_keyring "$keyring" "$MASTER_KEYRING"
    fi
}

update() {
    if [ -z "$APT_KEY_DONT_WARN_ON_DANGEROUS_USAGE" ]; then
	echo >&2 "Warning: 'apt-key update' is deprecated and should not be used anymore!"
	if [ -z "$ARCHIVE_KEYRING" ]; then
	    echo >&2 "Note: In your distribution this command is a no-op and can therefore be removed safely."
	    exit 0
	fi
    fi
    if [ ! -f "$ARCHIVE_KEYRING" ]; then
	apt_error "Can't find the archive-keyring (Is the ubuntu-keyring package installed?)"
	exit 1
    fi

# add new keys from the package;

# we do not use add_keys_with_verify_against_master_keyring here,
    # because "update" is run on regular package updates.  A
    # attacker might as well replace the master-archive-keyring file
    # in the package and add his own keys. so this check wouldn't
    # add any security. we *need* this check on net-update though
    import_keyring_into_keyring "$ARCHIVE_KEYRING" '' && cat "${GPGHOMEDIR}/gpgoutput.log"

if [ -r "$REMOVED_KEYS" ]; then
	# remove no-longer supported/used keys
	get_fingerprints_of_keyring "$(dearmor_filename "$REMOVED_KEYS")" | while read key; do
	    foreach_keyring_do 'remove_key_from_keyring' "$key"
	done
    else
	apt_warn "Removed keys keyring '$REMOVED_KEYS' missing or not readable"
    fi
}

remove_key_from_keyring() {
    local KEYRINGFILE="$1"
    shift
    # non-existent keyrings have by definition no keys
    if [ ! -e "$KEYRINGFILE" ]; then
       return
    fi

local FINGERPRINTS="${GPGHOMEDIR}/keyringfile.keylst"
    local DEARMOR="$(dearmor_filename "$KEYRINGFILE")"
    get_fingerprints_of_keyring "$DEARMOR" > "$FINGERPRINTS"

for KEY in "$@"; do
	# strip leading 0x, if present:
	KEY="$(echo "${KEY#0x}" | tr -d ' ')"

# check if the key is in this keyring
	if ! grep -iq "^[0-9A-F]*${KEY}$" "$FINGERPRINTS"; then
	    continue
	fi
	if [ ! -w "$KEYRINGFILE" ]; then
	    apt_warn "Key ${KEY} is in keyring ${KEYRINGFILE}, but can't be removed as it is read only."
	    continue
	fi
	# check if it is the only key in the keyring and if so remove the keyring altogether
	if [ '1' = "$(uniq "$FINGERPRINTS" | wc -l)" ]; then
	    mv -f "$KEYRINGFILE" "${KEYRINGFILE}~" # behave like gpg
	    return
	fi
	# we can't just modify pointed to files as these might be in /usr or something
	local REALTARGET
	if [ -L "$DEARMOR" ]; then
	    REALTARGET="$(readlink -f "$DEARMOR")"
	    mv -f "$DEARMOR" "${DEARMOR}.dpkg-tmp"
	    cp -a "$REALTARGET" "$DEARMOR"
	fi
	# delete the key from the keyring
	aptkey_execute "$GPG_SH" --keyring "$DEARMOR" --batch --delete-keys --yes "$KEY"
	if [ -n "$REALTARGET" ]; then
	    # the real backup is the old link, not the copy we made
	    mv -f "${DEARMOR}.dpkg-tmp" "${DEARMOR}~"
	fi
	if [ "$DEARMOR" != "$KEYRINGFILE" ]; then
	    mv -f "$KEYRINGFILE" "${KEYRINGFILE}~"
	    create_new_keyring "$KEYRINGFILE"
	    aptkey_execute "$GPG_SH" --keyring "$DEARMOR" --armor --export > "$KEYRINGFILE"
	fi
	get_fingerprints_of_keyring "$DEARMOR" > "$FINGERPRINTS"
    done
}

accessible_file_exists() {
   if ! test -s "$1"; then
      return 1
   fi
   if test -r "$1"; then
      return 0
   fi
   apt_warn "The key(s) in the keyring $1 are ignored as the file is not readable by user '$USER' executing apt-key."
   return 1
}

is_supported_keyring() {
    # empty files are always supported
    if ! test -s "$1"; then
	return 0
    fi
    local FILEEXT="${1##*.}"
    if [ "$FILEEXT" = 'gpg' ]; then
	# 0x98, 0x99 and 0xC6 via octal as hex isn't supported by dashs printf
	if printf '\231' | cmp --silent --bytes=1 - "$1"; then
	    true
	elif printf '\230' | cmp --silent --bytes=1 - "$1"; then
	    true
	elif printf '\306' | cmp --silent --bytes=1 - "$1"; then
	    true
	else
	    apt_warn "The key(s) in the keyring $1 are ignored as the file has an unsupported filetype."
	    return 1
	fi
    elif [ "$FILEEXT" = 'asc' ]; then
	true #dearmor_filename will deal with them
    else
	# most callers ignore unsupported extensions silently
	apt_warn "The key(s) in the keyring $1 are ignored as the file has an unsupported filename extension."
	return 1
    fi
    return 0
}

foreach_keyring_do() {
   local ACTION="$1"
   shift
   # if a --keyring was given, just work on this one
   if [ -n "$FORCED_KEYRING" ]; then
	$ACTION "$FORCED_KEYRING" "$@"
   else
	# otherwise all known keyrings are up for inspection
	if accessible_file_exists "$TRUSTEDFILE" && is_supported_keyring "$TRUSTEDFILE"; then
	    $ACTION "$TRUSTEDFILE" "$@"
	fi
	local TRUSTEDPARTS="/etc/apt/trusted.gpg.d"
	eval "$(apt-config shell TRUSTEDPARTS Dir::Etc::TrustedParts/d)"
	if [ -d "$TRUSTEDPARTS" ]; then
	    TRUSTEDPARTS="$(readlink -f "$TRUSTEDPARTS")"
	    local TRUSTEDPARTSLIST="$(cd /; find "$TRUSTEDPARTS" -mindepth 1 -maxdepth 1 $ -name '*.gpg' -o -name '*.asc' $)"
	    for trusted in $(echo "$TRUSTEDPARTSLIST" | sort); do
		if accessible_file_exists "$trusted" && is_supported_keyring "$trusted"; then
		    $ACTION "$trusted" "$@"
		fi
	    done
	fi
   fi
}

list_keys_in_keyring() {
    local KEYRINGFILE="$1"
    shift
    # fingerprint and co will fail if key isn't in this keyring
    aptkey_execute "$GPG_SH" --keyring "$(dearmor_filename "$KEYRINGFILE")" "$@" > "${GPGHOMEDIR}/gpgoutput.log" 2> "${GPGHOMEDIR}/gpgoutput.err" || true
    if [ ! -s "${GPGHOMEDIR}/gpgoutput.log" ]; then
	return
    fi
    # we fake gpg header here to refer to the real asc file rather than a temp file
    if [ "${KEYRINGFILE##*.}" = 'asc' ]; then
	if expr match "$(sed -n '2p' "${GPGHOMEDIR}/gpgoutput.log")" '^-\+$' >/dev/null 2>&1; then
	    echo "$KEYRINGFILE"
	    echo "$KEYRINGFILE" | sed 's#[^-]#-#g'
	    sed '1,2d' "${GPGHOMEDIR}/gpgoutput.log" || true
	else
	    cat "${GPGHOMEDIR}/gpgoutput.log"
	fi
    else
	cat "${GPGHOMEDIR}/gpgoutput.log"
    fi
    if [ -s "${GPGHOMEDIR}/gpgoutput.err" ]; then
	cat >&2 "${GPGHOMEDIR}/gpgoutput.err"
    fi
}

export_key_from_to() {
    local FROM="$1"
    local TO="$2"
    shift 2
    if ! aptkey_execute "$GPG_SH" --keyring "$(dearmor_filename "$FROM")" --export "$@" > "$TO" 2> "${GPGHOMEDIR}/gpgoutput.log"; then
	cat >&2 "${GPGHOMEDIR}/gpgoutput.log"
	false
    else
	chmod 0644 -- "$TO"
    fi
}

import_keyring_into_keyring() {
    local FROM="${1:-${GPGHOMEDIR}/pubring.gpg}"
    local TO="${2:-${GPGHOMEDIR}/pubring.gpg}"
    shift 2
    rm -f "${GPGHOMEDIR}/gpgoutput.log"
    # the idea is simple: We take keys from one keyring and copy it to another
    # we do this with so many checks in between to ensure that WE control the
    # creation, so we know that the (potentially) created $TO keyring is a
    # simple keyring rather than a keybox as gpg2 would create it which in turn
    # can't be read by gpgv.
    # BEWARE: This is designed more in the way to work with the current
    # callers, than to have a well defined it would be easy to add new callers to.
    if [ ! -s "$TO" ]; then
	if [ -s "$FROM" ]; then
	    if [ -z "$2" ]; then
		local OPTS
		if [ "${TO##*.}" = 'asc' ]; then
		    OPTS='--armor'
		fi
		export_key_from_to "$(dearmor_filename "$FROM")" "$TO" $OPTS ${1:+"$1"}
	    else
		create_new_keyring "$TO"
	    fi
	else
	    create_new_keyring "$TO"
	fi
    elif [ -s "$FROM" ]; then
	local EXPORTLIMIT="$1"
	if [ -n "$1$2" ]; then shift; fi
	local DEARMORTO="$(dearmor_filename "$TO")"
	if ! aptkey_execute "$GPG_SH" --keyring "$(dearmor_filename "$FROM")" --export ${EXPORTLIMIT:+"$EXPORTLIMIT"} \
	   | aptkey_execute "$GPG_SH" --keyring "$DEARMORTO" --batch --import "$@" > "${GPGHOMEDIR}/gpgoutput.log" 2>&1; then
	    cat >&2 "${GPGHOMEDIR}/gpgoutput.log"
	    false
	fi
	if [ "$DEARMORTO" != "$TO" ]; then
	    export_key_from_to "$DEARMORTO" "${DEARMORTO}.asc" --armor
	    if ! cmp -s "$TO" "${DEARMORTO}.asc" 2>/dev/null; then
		cp -a "$TO" "${TO}~"
		mv -f "${DEARMORTO}.asc" "$TO"
	    fi
	fi
    fi
}

dearmor_keyring() {
    # https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=831409#67
    # The awk script is more complex through to skip surrounding garbage and
    # to support multiple keys in one file (old gpgs generate version headers
    # which get printed with the original and hence result in garbage input for base64
    awk '/^-----BEGIN/{ x = 1; }
/^$/{ if (x == 1) { x = 2; }; }
/^[^=-]/{ if (x == 2) { print $0; }; }
/^-----END/{ x = 0; }' | base64 -d
}
dearmor_filename() {
    if [ "${1##*.}" = 'asc' ]; then
	local trusted="${GPGHOMEDIR}/${1##*/}.gpg"
	if [ -s "$1" ]; then
	    dearmor_keyring < "$1" > "$trusted"
	fi
	echo "$trusted"
    elif [ "${1##*.}" = 'gpg' ]; then
	echo "$1"
    elif [ "$(head -n 1 "$1" 2>/dev/null)" = '-----BEGIN PGP PUBLIC KEY BLOCK-----' ]; then
	local trusted="${GPGHOMEDIR}/${1##*/}.gpg"
	dearmor_keyring < "$1" > "$trusted"
	echo "$trusted"
    else
	echo "$1"
    fi
}
catfile() {
    cat "$(dearmor_filename "$1")" >> "$2"
}

merge_all_trusted_keyrings_into_pubring() {
    # does the same as:
    # foreach_keyring_do 'import_keys_from_keyring' "${GPGHOMEDIR}/pubring.gpg"
    # but without using gpg, just cat and find
    local PUBRING="$(readlink -f "${GPGHOMEDIR}")/pubring.gpg"
    rm -f "$PUBRING"
    touch "$PUBRING"
    foreach_keyring_do 'catfile' "$PUBRING"
}

import_keys_from_keyring() {
    import_keyring_into_keyring "$1" "$2"
}

merge_keys_into_keyrings() {
    import_keyring_into_keyring "$2" "$1" '' --import-options 'merge-only'
}

merge_back_changes() {
    if [ -n "$FORCED_KEYRING" ]; then
	# if the keyring was forced merge is already done
	if [ "$FORCED_KEYRING" != "$TRUSTEDFILE" ]; then
	    mv -f "$FORCED_KEYRING" "${FORCED_KEYRING}~"
	    export_key_from_to "$TRUSTEDFILE" "$FORCED_KEYRING" --armor
	fi
	return
    fi
    if [ -s "${GPGHOMEDIR}/pubring.gpg" ]; then
	# merge all updated keys
	foreach_keyring_do 'merge_keys_into_keyrings' "${GPGHOMEDIR}/pubring.gpg"
    fi
    # look for keys which were added or removed
    get_fingerprints_of_keyring "${GPGHOMEDIR}/pubring.orig.gpg" > "${GPGHOMEDIR}/pubring.orig.keylst"
    get_fingerprints_of_keyring "${GPGHOMEDIR}/pubring.gpg" > "${GPGHOMEDIR}/pubring.keylst"
    comm -3 "${GPGHOMEDIR}/pubring.keylst" "${GPGHOMEDIR}/pubring.orig.keylst" > "${GPGHOMEDIR}/pubring.diff"
    # key isn't part of new keyring, so remove
    cut -f 2 "${GPGHOMEDIR}/pubring.diff" | while read key; do
	if [ -z "$key" ]; then continue; fi
	foreach_keyring_do 'remove_key_from_keyring' "$key"
    done
    # key is only part of new keyring, so we need to import it
    cut -f 1 "${GPGHOMEDIR}/pubring.diff" | while read key; do
	if [ -z "$key" ]; then continue; fi
	import_keyring_into_keyring '' "$TRUSTEDFILE" "$key"
    done
}

setup_merged_keyring() {
    if [ -n "$FORCED_KEYID" ]; then
	merge_all_trusted_keyrings_into_pubring
	FORCED_KEYRING="${GPGHOMEDIR}/forcedkeyid.gpg"
	TRUSTEDFILE="${FORCED_KEYRING}"
	echo "#!/bin/sh
exec sh '($(escape_shell "${GPG}")' --keyring '$(escape_shell "${TRUSTEDFILE}")' \"\$@\"" > "${GPGHOMEDIR}/gpg.1.sh"
	GPG="${GPGHOMEDIR}/gpg.1.sh"
	# ignore error as this "just" means we haven't found the forced keyid and the keyring will be empty
	import_keyring_into_keyring '' "$TRUSTEDFILE" "$FORCED_KEYID" || true
    elif [ -z "$FORCED_KEYRING" ]; then
	merge_all_trusted_keyrings_into_pubring
	if [ -r "${GPGHOMEDIR}/pubring.gpg" ]; then
	    cp -a "${GPGHOMEDIR}/pubring.gpg" "${GPGHOMEDIR}/pubring.orig.gpg"
	else
	   touch "${GPGHOMEDIR}/pubring.gpg" "${GPGHOMEDIR}/pubring.orig.gpg"
	fi
	echo "#!/bin/sh
exec sh '$(escape_shell "${GPG}")' --keyring '$(escape_shell "${GPGHOMEDIR}/pubring.gpg")' \"\$@\"" > "${GPGHOMEDIR}/gpg.1.sh"
	GPG="${GPGHOMEDIR}/gpg.1.sh"
    else
	TRUSTEDFILE="$(dearmor_filename "$FORCED_KEYRING")"
	create_new_keyring "$TRUSTEDFILE"
	echo "#!/bin/sh
exec sh '$(escape_shell "${GPG}")' --keyring '$(escape_shell "${TRUSTEDFILE}")' \"\$@\"" > "${GPGHOMEDIR}/gpg.1.sh"
	GPG="${GPGHOMEDIR}/gpg.1.sh"
    fi
}

create_new_keyring() {
    # gpg defaults to mode 0600 for new keyrings. Create one with 0644 instead.
    if ! [ -e "$1" ]; then
	if [ -w "$(dirname "$1")" ]; then
	    touch -- "$1"
	    chmod 0644 -- "$1"
	fi
    fi
}

aptkey_execute() { sh "$@"; }

usage() {
    echo "Usage: apt-key [--keyring file] [command] [arguments]"
    echo
    echo "Manage apt's list of trusted keys"
    echo
    echo "  apt-key add <file>          - add the key contained in <file> ('-' for stdin)"
    echo "  apt-key del <keyid>         - remove the key <keyid>"
    echo "  apt-key export <keyid>      - output the key <keyid>"
    echo "  apt-key exportall           - output all trusted keys"
    echo "  apt-key update              - update keys using the keyring package"
    echo "  apt-key net-update          - update keys using the network"
    echo "  apt-key list                - list keys"
    echo "  apt-key finger              - list fingerprints"
    echo "  apt-key adv                 - pass advanced options to gpg (download key)"
    echo
    echo "If no specific keyring file is given the command applies to all keyring files."
}

while [ -n "$1" ]; do
   case "$1" in
      --keyring)
	 shift
	 if [ -z "$FORCED_KEYRING" -o "$FORCED_KEYRING" = '/dev/null' ]; then
	     TRUSTEDFILE="$1"
	     FORCED_KEYRING="$1"
	 elif [ "$TRUSTEDFILE" = "$FORCED_KEYRING" ]; then
	     create_gpg_home
	     FORCED_KEYRING="${GPGHOMEDIR}/mergedkeyrings.gpg"
	     echo -n '' > "$FORCED_KEYRING"
	     chmod 0644 -- "$FORCED_KEYRING"
	     catfile "$TRUSTEDFILE" "$FORCED_KEYRING"
	     catfile "$1" "$FORCED_KEYRING"
	 else
	     catfile "$1" "$FORCED_KEYRING"
	 fi
	 ;;
      --keyid)
	 shift
	 if [ -n "$FORCED_KEYID" ]; then
	     apt_error 'Specifying --keyid multiple times is not supported'
	     exit 1
	 fi
	 FORCED_KEYID="$1"
	 ;;
      --secret-keyring)
	 shift
	 FORCED_SECRET_KEYRING="$1"
	 ;;
      --readonly)
	 merge_back_changes() { true; }
	 create_new_keyring() { if [ ! -r "$FORCED_KEYRING" ]; then TRUSTEDFILE='/dev/null'; FORCED_KEYRING="$TRUSTEDFILE"; fi; }
	 ;;
      --fakeroot)
	 requires_root() { true; }
	 ;;
      --quiet)
	 aptkey_echo() { true; }
	 ;;
      --debug1)
	 # some cmds like finger redirect stderr to /dev/null …
	aptkey_execute() { echo 'EXEC:' "$@"; sh "$@"; }
	;;
      --debug2)
	 # … other more complicated ones pipe gpg into gpg.
	aptkey_execute() { echo >&2 'EXEC:' "$@"; sh "$@"; }
	;;
      --homedir)
	 # force usage of a specific homedir instead of creating a temporary
	 shift
	 GPGHOMEDIR="$1"
	;;
      --*)
	 echo >&2 "Unknown option: $1"
	 usage
	 exit 1;;
      *)
	 break;;
   esac
   shift
done

if [ -z "$TRUSTEDFILE" ]; then
   TRUSTEDFILE="/etc/apt/trusted.gpg"
   eval $(apt-config shell TRUSTEDFILE Apt::GPGV::TrustedKeyring)
   eval $(apt-config shell TRUSTEDFILE Dir::Etc::Trusted/f)
fi

command="$1"
if [ -z "$command" ]; then
    usage
    exit 1
fi
shift

prepare_gpg_home() {
    # crude detection if we are called from a maintainerscript where the
    # package depends on gnupg or not. We accept recommends here as
    # well as the script hopefully uses apt-key optionally then like e.g.
    # debian-archive-keyring for (upgrade) cleanup did
    if [ -n "$DPKG_MAINTSCRIPT_PACKAGE" ] && [ -z "$APT_KEY_DONT_WARN_ON_DANGEROUS_USAGE" ]; then
	if ! dpkg-query --show --showformat '${Pre-Depends}${Depends}${Recommends}\n' "$DPKG_MAINTSCRIPT_PACKAGE" 2>/dev/null | grep -q gnupg; then
	    cat >&2 <<EOF
Warning: The $DPKG_MAINTSCRIPT_NAME maintainerscript of the package $DPKG_MAINTSCRIPT_PACKAGE
Warning: seems to use apt-key (provided by apt) without depending on gnupg or gnupg2.
Warning: This will BREAK in the future and should be fixed by the package maintainer(s).
Note: Check first if apt-key functionality is needed at all - it probably isn't!
EOF
	fi
    fi
    eval "$(apt-config shell GPG_EXE Apt::Key::gpgcommand)"
    if [ -n "$GPG_EXE" ] && command_available "$GPG_EXE"; then
	true
    elif command_available 'gpg'; then
	GPG_EXE="gpg"
    elif command_available 'gpg2'; then
	GPG_EXE="gpg2"
    elif command_available 'gpg1'; then
	GPG_EXE="gpg1"
    else
	apt_error 'gnupg, gnupg2 and gnupg1 do not seem to be installed, but one of them is required for this operation'
	exit 255
    fi

create_gpg_home

# now tell gpg that it shouldn't try to maintain this trustdb file
    echo "#!/bin/sh
exec '$(escape_shell "${GPG_EXE}")' --ignore-time-conflict --no-options --no-default-keyring \\
--homedir '$(escape_shell "${GPGHOMEDIR}")' --no-auto-check-trustdb --trust-model always \"\$@\"" > "${GPGHOMEDIR}/gpg.0.sh"
    GPG_SH="${GPGHOMEDIR}/gpg.0.sh"
    GPG="$GPG_SH"

# create the trustdb with an (empty) dummy keyring
    # older gpgs required it, newer gpgs even warn that it isn't needed,
    # but require it nonetheless for some commands, so we just play safe
    # here for the foreseeable future and create a dummy one
    touch "${GPGHOMEDIR}/empty.gpg"
    if ! "$GPG_EXE" --ignore-time-conflict --no-options --no-default-keyring \
       --homedir "$GPGHOMEDIR" --quiet --check-trustdb --keyring "${GPGHOMEDIR}/empty.gpg" >"${GPGHOMEDIR}/gpgoutput.log" 2>&1; then
       cat >&2 "${GPGHOMEDIR}/gpgoutput.log"
       false
    fi

# We don't usually need a secret keyring, of course, but
    # for advanced operations, we might really need a secret keyring after all
    if [ -n "$FORCED_SECRET_KEYRING" ] && [ -r "$FORCED_SECRET_KEYRING" ]; then
	if ! aptkey_execute "$GPG" -v --batch --import "$FORCED_SECRET_KEYRING" >"${GPGHOMEDIR}/gpgoutput.log" 2>&1; then
	    # already imported keys cause gpg1 to fail for some reason… ignore this error
	    if ! grep -q 'already in secret keyring' "${GPGHOMEDIR}/gpgoutput.log"; then
		cat >&2 "${GPGHOMEDIR}/gpgoutput.log"
		false
	    fi
	fi
    else
       # and then, there are older versions of gpg which panic and implode
       # if there isn't one available - and writeable for imports
       # and even if not output is littered with the creation of a secring,
       # so lets call import once to have it create what it wants in silence
       echo -n | aptkey_execute "$GPG" --batch --import >/dev/null 2>&1 || true
    fi
}

warn_on_script_usage() {
    if [ -n "$APT_KEY_DONT_WARN_ON_DANGEROUS_USAGE" ]; then
	return
    fi
    # (Maintainer) scripts should not be using apt-key
    if [ -n "$DPKG_MAINTSCRIPT_PACKAGE" ]; then
	echo >&2 "Warning: apt-key should not be used in scripts (called from $DPKG_MAINTSCRIPT_NAME maintainerscript of the package ${DPKG_MAINTSCRIPT_PACKAGE})"
    elif [ ! -t 1 ]; then
	echo >&2 "Warning: apt-key output should not be parsed (stdout is not a terminal)"
    fi
}

if [ "$command" != 'help' ] && [ "$command" != 'verify' ]; then
    prepare_gpg_home
fi

case "$command" in
    add)
	warn_on_script_usage
	requires_root
	setup_merged_keyring
	aptkey_execute "$GPG" --quiet --batch --import "$@"
	merge_back_changes
	aptkey_echo "OK"
        ;;
    del|rm|remove)
	# no script warning here as removing 'add' usage needs 'del' for cleanup
	requires_root
	foreach_keyring_do 'remove_key_from_keyring' "$@"
	aptkey_echo "OK"
        ;;
    update)
	warn_on_script_usage
	requires_root
	setup_merged_keyring
	update
	merge_back_changes
	;;
    net-update)
	requires_root
	setup_merged_keyring
	net_update
	merge_back_changes
	;;
    list|finger*)
	warn_on_script_usage
	foreach_keyring_do 'list_keys_in_keyring' --fingerprint "$@"
	;;
    export|exportall)
	warn_on_script_usage
	merge_all_trusted_keyrings_into_pubring
	aptkey_execute "$GPG_SH" --keyring "${GPGHOMEDIR}/pubring.gpg" --armor --export "$@"
	;;
    adv*)
	warn_on_script_usage
	setup_merged_keyring
	aptkey_echo "Executing: $GPG" "$@"
	aptkey_execute "$GPG" "$@"
	merge_back_changes
	;;
    verify)
	GPGV=''
	eval $(apt-config shell GPGV Apt::Key::gpgvcommand)
	if [ -n "$GPGV" ] && command_available "$GPGV"; then true;
	elif command_available 'gpgv'; then GPGV='gpgv';
	elif command_available 'gpgv2'; then GPGV='gpgv2';
	elif command_available 'gpgv1'; then GPGV='gpgv1';
	else
	   apt_error 'gpgv, gpgv2 or gpgv1 required for verification, but neither seems installed'
	   exit 29
	fi
	# for a forced keyid we need gpg --export, so full wrapping required
	if [ -n "$FORCED_KEYID" ]; then
	    prepare_gpg_home
	else
	    create_gpg_home
	fi
	setup_merged_keyring
	if [ -n "$FORCED_KEYRING" ]; then
	    "$GPGV" --homedir "${GPGHOMEDIR}" --keyring "$(dearmor_filename "${FORCED_KEYRING}")" --ignore-time-conflict "$@"
	else
	    "$GPGV" --homedir "${GPGHOMEDIR}" --keyring "${GPGHOMEDIR}/pubring.gpg" --ignore-time-conflict "$@"
	fi
	;;
    help)
        usage
        ;;
    *)
        usage
        exit 1
        ;;
esac

${this.title}

Code Editor : apt-key