Gecko [ nrupathungauniversityblr.ac.in ]

Name	Size	Permission
2to3-3.5	96 B	-rwxr-xr-x
[	50.7 KB	-rwxr-xr-x
aa-enabled	22.16 KB	-rwxr-xr-x
abootimg	18.27 KB	-rwxr-xr-x
abootimg-pack-initrd	362 B	-rwxr-xr-x
abootimg-unpack-initrd	272 B	-rwxr-xr-x
addpart	18.45 KB	-rwxr-xr-x
arch	30.7 KB	-rwxr-xr-x
awk	642.72 KB	-rwxr-xr-x
base32	38.73 KB	-rwxr-xr-x
base64	38.73 KB	-rwxr-xr-x
basename	30.67 KB	-rwxr-xr-x
bashbug	6.79 KB	-rwxr-xr-x
bootctl	74.44 KB	-rwxr-xr-x
busctl	363.21 KB	-rwxr-xr-x
c_rehash	6.05 KB	-rwxr-xr-x
captoinfo	70.71 KB	-rwxr-xr-x
catchsegv	3.26 KB	-rwxr-xr-x
cautious-launcher	853 B	-rwxr-xr-x
cgm	17.99 KB	-rwxr-xr-x
chacl	13.99 KB	-rwxr-xr-x
chage	60.88 KB	-rwxr-sr-x
chardet3	309 B	-rwxr-xr-x
chardetect3	309 B	-rwxr-xr-x
chattr	10.34 KB	-rwxr-xr-x
chcon	62.92 KB	-rwxr-xr-x
chfn	70.14 KB	-rwsr-xr-x
chrt	26.67 KB	-rwxr-xr-x
chsh	39.48 KB	-rwsr-xr-x
ckbcomp	144.19 KB	-rwxr-xr-x
cksum	30.67 KB	-rwxr-xr-x
clear	6.08 KB	-rwxr-xr-x
clear_console	10.27 KB	-rwxr-xr-x
cloud-id	310 B	-rwxr-xr-x
cloud-init	314 B	-rwxr-xr-x
cloud-init-per	2.06 KB	-rwxr-xr-x
cmp	42.67 KB	-rwxr-xr-x
codepage	10.29 KB	-rwxr-xr-x
comm	34.7 KB	-rwxr-xr-x
compose	17.55 KB	-rwxr-xr-x
console-conf	2.86 KB	-rwxr-xr-x
crontab	35.23 KB	-rwxr-sr-x
csplit	46.86 KB	-rwxr-xr-x
ctstat	18.68 KB	-rwxr-xr-x
cut	38.8 KB	-rwxr-xr-x
dbus-cleanup-sockets	9.98 KB	-rwxr-xr-x
dbus-daemon	218.95 KB	-rwxr-xr-x
dbus-monitor	21.99 KB	-rwxr-xr-x
dbus-run-session	9.98 KB	-rwxr-xr-x
dbus-send	21.98 KB	-rwxr-xr-x
dbus-update-activation-environ...	13.98 KB	-rwxr-xr-x
dbus-uuidgen	9.98 KB	-rwxr-xr-x
deallocvt	10.3 KB	-rwxr-xr-x
deb-systemd-helper	17.99 KB	-rwxr-xr-x
deb-systemd-invoke	4.37 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	18.45 KB	-rwxr-xr-x
dh_bash-completion	2.49 KB	-rwxr-xr-x
dh_pypy	11.71 KB	-rwxr-xr-x
dh_python3	11.91 KB	-rwxr-xr-x
diff	123.08 KB	-rwxr-xr-x
diff3	54.86 KB	-rwxr-xr-x
dircolors	38.71 KB	-rwxr-xr-x
dirname	30.67 KB	-rwxr-xr-x
dotlockfile	14.51 KB	-rwxr-sr-x
dpkg-deb	131.43 KB	-rwxr-xr-x
du	119.17 KB	-rwxr-xr-x
dumpimage	139.06 KB	-rwxr-xr-x
dumpkeys	166.52 KB	-rwxr-xr-x
ec2metadata	7.12 KB	-rwxr-xr-x
edit	17.55 KB	-rwxr-xr-x
editor	1.02 MB	-rwxr-xr-x
env	30.67 KB	-rwxr-xr-x
envsubst	34.51 KB	-rwxr-xr-x
ex	1.02 MB	-rwxr-xr-x
expand	30.73 KB	-rwxr-xr-x
expiry	22.23 KB	-rwxr-sr-x
expr	38.73 KB	-rwxr-xr-x
factor	70.77 KB	-rwxr-xr-x
faillog	18.25 KB	-rwxr-xr-x
fallocate	22.56 KB	-rwxr-xr-x
finalrd	2.1 KB	-rwxr-xr-x
find	216.57 KB	-rwxr-xr-x
flock	26.71 KB	-rwxr-xr-x
fmt	38.7 KB	-rwxr-xr-x
fold	34.7 KB	-rwxr-xr-x
free	18.37 KB	-rwxr-xr-x
fw_printenv	36.29 KB	-rwxr-xr-x
fw_setenv	36.29 KB	-rwxr-xr-x
fwupdate	13.99 KB	-rwxr-xr-x
gawk	642.72 KB	-rwxr-xr-x
gdbserver	408.53 KB	-rwxr-xr-x
getconf	22.41 KB	-rwxr-xr-x
getent	27.3 KB	-rwxr-xr-x
getfacl	22.62 KB	-rwxr-xr-x
getkeycodes	10.3 KB	-rwxr-xr-x
getopt	14.43 KB	-rwxr-xr-x
gettext	34.48 KB	-rwxr-xr-x
gettext.sh	4.52 KB	-rwxr-xr-x
gpasswd	73.54 KB	-rwsr-xr-x
gpg	984.87 KB	-rwxr-xr-x
gpg-zip	3.23 KB	-rwxr-xr-x
gpgsplit	58.76 KB	-rwxr-xr-x
gpgv	363.63 KB	-rwxr-xr-x
groups	30.7 KB	-rwxr-xr-x
growpart	20.99 KB	-rwxr-xr-x
grub-editenv	228.78 KB	-rwxr-xr-x
head	38.73 KB	-rwxr-xr-x
helpztags	2.46 KB	-rwxr-xr-x
hostid	26.64 KB	-rwxr-xr-x
hostnamectl	287.2 KB	-rwxr-xr-x
i386	14.38 KB	-rwxr-xr-x
iconv	59 KB	-rwxr-xr-x
id	38.83 KB	-rwxr-xr-x
igawk	3.11 KB	-rwxr-xr-x
infocmp	54.57 KB	-rwxr-xr-x
infotocap	70.71 KB	-rwxr-xr-x
install	135.59 KB	-rwxr-xr-x
ionice	22.59 KB	-rwxr-xr-x
ipcmk	22.69 KB	-rwxr-xr-x
ipcrm	26.54 KB	-rwxr-xr-x
ipcs	46.71 KB	-rwxr-xr-x
iptables-xml	92.74 KB	-rwxr-xr-x
ischroot	10.34 KB	-rwxr-xr-x
join	46.77 KB	-rwxr-xr-x
jsondiff	976 B	-rwxr-xr-x
jsonpatch	3.58 KB	-rwxr-xr-x
jsonpointer	1.31 KB	-rwxr-xr-x
jwt3	288 B	-rwxr-xr-x
kbdinfo	10.31 KB	-rwxr-xr-x
kwboot	14.33 KB	-rwxr-xr-x
last	38.84 KB	-rwxr-xr-x
lastb	38.84 KB	-rwxr-xr-x
lastlog	14.03 KB	-rwxr-xr-x
lcf	7.6 KB	-rwxr-xr-x
ldd	5.3 KB	-rwxr-xr-x
less	166.76 KB	-rwxr-xr-x
lessecho	10.02 KB	-rwxr-xr-x
lessfile	8.36 KB	-rwxr-xr-x
lesskey	19.39 KB	-rwxr-xr-x
lesspipe	8.36 KB	-rwxr-xr-x
line	10.32 KB	-rwxr-xr-x
link	26.64 KB	-rwxr-xr-x
linux-check-removal	3.99 KB	-rwxr-xr-x
linux-update-symlinks	6.17 KB	-rwxr-xr-x
linux-version	2.63 KB	-rwxr-xr-x
linux32	14.38 KB	-rwxr-xr-x
linux64	14.38 KB	-rwxr-xr-x
lnstat	18.68 KB	-rwxr-xr-x
loadkeys	206.57 KB	-rwxr-xr-x
loadunimap	26.66 KB	-rwxr-xr-x
locale	37.91 KB	-rwxr-xr-x
localectl	295.22 KB	-rwxr-xr-x
localedef	315.71 KB	-rwxr-xr-x
lockfile-check	14.25 KB	-rwxr-xr-x
lockfile-create	14.25 KB	-rwxr-xr-x
lockfile-remove	14.25 KB	-rwxr-xr-x
lockfile-touch	14.25 KB	-rwxr-xr-x
logger	35.35 KB	-rwxr-xr-x
logname	26.67 KB	-rwxr-xr-x
lsattr	10.33 KB	-rwxr-xr-x
lscpu	55.12 KB	-rwxr-xr-x
lsinitramfs	2.43 KB	-rwxr-xr-x
lsipc	59 KB	-rwxr-xr-x
lslocks	31.09 KB	-rwxr-xr-x
lslogins	51.15 KB	-rwxr-xr-x
lspgpot	1.06 KB	-rwxr-xr-x
lzcat	67.11 KB	-rwxr-xr-x
lzcmp	5.39 KB	-rwxr-xr-x
lzdiff	5.39 KB	-rwxr-xr-x
lzegrep	5.56 KB	-rwxr-xr-x
lzfgrep	5.56 KB	-rwxr-xr-x
lzgrep	5.56 KB	-rwxr-xr-x
lzless	1.78 KB	-rwxr-xr-x
lzma	67.11 KB	-rwxr-xr-x
lzmainfo	10.31 KB	-rwxr-xr-x
lzmore	2.12 KB	-rwxr-xr-x
mail-lock	14.25 KB	-rwxr-sr-x
mail-touchlock	14.25 KB	-rwxr-sr-x
mail-unlock	14.25 KB	-rwxr-sr-x
mapscrn	18.66 KB	-rwxr-xr-x
mawk	115.01 KB	-rwxr-xr-x
mcookie	26.71 KB	-rwxr-xr-x
md5sum	42.77 KB	-rwxr-xr-x
md5sum.textutils	42.77 KB	-rwxr-xr-x
mesg	10.37 KB	-rwxr-xr-x
mk_modmap	15.78 KB	-rwxr-xr-x
mkenvimage	14.2 KB	-rwxr-xr-x
mkfifo	58.95 KB	-rwxr-xr-x
mkimage	143.06 KB	-rwxr-xr-x
mkknlimg	5.87 KB	-rwxr-xr-x
mksquashfs	174.12 KB	-rwxr-xr-x
mksunxiboot	6.12 KB	-rwxr-xr-x
mkswapfile	865 B	-rwxr-xr-x
namei	26.58 KB	-rwxr-xr-x
nawk	642.72 KB	-rwxr-xr-x
newgrp	38.97 KB	-rwsr-xr-x
ngettext	34.5 KB	-rwxr-xr-x
nice	34.7 KB	-rwxr-xr-x
nl	38.83 KB	-rwxr-xr-x
nohup	30.7 KB	-rwxr-xr-x
nproc	30.7 KB	-rwxr-xr-x
nsenter	26.88 KB	-rwxr-xr-x
nstat	22.47 KB	-rwxr-xr-x
numfmt	58.86 KB	-rwxr-xr-x
od	66.83 KB	-rwxr-xr-x
openssl	545.97 KB	-rwxr-xr-x
pager	166.73 KB	-rwxr-xr-x
partx	75.63 KB	-rwxr-xr-x
passwd	52.98 KB	-rwsr-xr-x
paste	30.7 KB	-rwxr-xr-x
pathchk	30.67 KB	-rwxr-xr-x
pdb3	59.56 KB	-rwxr-xr-x
pdb3.5	59.56 KB	-rwxr-xr-x
perl	1.82 MB	-rwxr-xr-x
perl5.22.1	1.82 MB	-rwxr-xr-x
pg	38.91 KB	-rwxr-xr-x
pgrep	26.63 KB	-rwxr-xr-x
pinky	34.86 KB	-rwxr-xr-x
pkill	26.63 KB	-rwxr-xr-x
pldd	14.59 KB	-rwxr-xr-x
plog	146 B	-rwxr-xr-x
pmap	30.61 KB	-rwxr-xr-x
poff	2.77 KB	-rwxr-xr-x
pon	1.33 KB	-rwxr-xr-x
pr	74.95 KB	-rwxr-xr-x
print	17.55 KB	-rwxr-xr-x
printenv	30.64 KB	-rwxr-xr-x
printf	46.73 KB	-rwxr-xr-x
prlimit	31.3 KB	-rwxr-xr-x
probert	2.09 KB	-rwxr-xr-x
psfaddtable	18.42 KB	-rwxr-xr-x
psfgettable	18.42 KB	-rwxr-xr-x
psfstriptable	18.42 KB	-rwxr-xr-x
psfxtable	18.42 KB	-rwxr-xr-x
ptx	66.95 KB	-rwxr-xr-x
pwdx	10.36 KB	-rwxr-xr-x
py3clean	7.62 KB	-rwxr-xr-x
py3compile	11.83 KB	-rwxr-xr-x
py3versions	11.44 KB	-rwxr-xr-x
pybuild	21.33 KB	-rwxr-xr-x
pydoc3	79 B	-rwxr-xr-x
pydoc3.5	79 B	-rwxr-xr-x
pygettext3	21.73 KB	-rwxr-xr-x
pygettext3.5	21.73 KB	-rwxr-xr-x
python3	4.25 MB	-rwxr-xr-x
python3-jsondiff	976 B	-rwxr-xr-x
python3-jsonpatch	3.58 KB	-rwxr-xr-x
python3-jsonpointer	1.31 KB	-rwxr-xr-x
python3.5	4.25 MB	-rwxr-xr-x
python3.5m	4.25 MB	-rwxr-xr-x
python3m	4.25 MB	-rwxr-xr-x
rcp	86.14 KB	-rwxr-xr-x
realpath	58.83 KB	-rwxr-xr-x
rename.ul	14.41 KB	-rwxr-xr-x
renice	10.38 KB	-rwxr-xr-x
reset	18.42 KB	-rwxr-xr-x
resizecons	18.6 KB	-rwxr-xr-x
resizepart	34.86 KB	-rwxr-xr-x
rev	10.38 KB	-rwxr-xr-x
rgrep	30 B	-rwxr-xr-x
rlogin	690.67 KB	-rwxr-xr-x
routef	173 B	-rwxr-xr-x
routel	1.23 KB	-rwxr-xr-x
rsh	690.67 KB	-rwxr-xr-x
rtstat	18.68 KB	-rwxr-xr-x
run-mailcap	17.55 KB	-rwxr-xr-x
runcon	34.8 KB	-rwxr-xr-x
rview	1.02 MB	-rwxr-xr-x
savelog	10.22 KB	-rwxr-xr-x
sc-logresolve	816 B	-rwxr-xr-x
scmp_sys_resolver	10.26 KB	-rwxr-xr-x
scp	86.14 KB	-rwxr-xr-x
screendump	10.33 KB	-rwxr-xr-x
script	22.66 KB	-rwxr-xr-x
scriptreplay	14.4 KB	-rwxr-xr-x
sdiff	46.78 KB	-rwxr-xr-x
see	17.55 KB	-rwxr-xr-x
select-editor	1.19 KB	-rwxr-xr-x
sensible-browser	1.11 KB	-rwxr-xr-x
sensible-editor	1.08 KB	-rwxr-xr-x
sensible-pager	288 B	-rwxr-xr-x
seq	46.73 KB	-rwxr-xr-x
setarch	14.38 KB	-rwxr-xr-x
setfacl	34.68 KB	-rwxr-xr-x
setkeycodes	10.29 KB	-rwxr-xr-x
setleds	10.32 KB	-rwxr-xr-x
setlogcons	10.27 KB	-rwxr-xr-x
setmetamode	10.37 KB	-rwxr-xr-x
setsid	10.38 KB	-rwxr-xr-x
setterm	34.61 KB	-rwxr-xr-x
sftp	134.36 KB	-rwxr-xr-x
sg	38.97 KB	-rwsr-xr-x
sha1sum	42.77 KB	-rwxr-xr-x
sha224sum	50.77 KB	-rwxr-xr-x
sha256sum	50.77 KB	-rwxr-xr-x
sha384sum	54.77 KB	-rwxr-xr-x
sha512sum	54.77 KB	-rwxr-xr-x
showconsolefont	18.4 KB	-rwxr-xr-x
showkey	14.34 KB	-rwxr-xr-x
shred	54.92 KB	-rwxr-xr-x
shuf	54.83 KB	-rwxr-xr-x
skill	22.61 KB	-rwxr-xr-x
slabtop	18.47 KB	-rwxr-xr-x
slogin	690.67 KB	-rwxr-xr-x
snap	15.85 MB	-rwxr-xr-x
snapctl	6.13 MB	-rwxr-xr-x
snapfuse	38.61 KB	-rwxr-xr-x
snice	22.61 KB	-rwxr-xr-x
sort	107.46 KB	-rwxr-xr-x
split	67.41 KB	-rwxr-xr-x
splitfont	10.27 KB	-rwxr-xr-x
ssh	690.67 KB	-rwxr-xr-x
ssh-add	330.21 KB	-rwxr-xr-x
ssh-agent	350.22 KB	-rwxr-sr-x
ssh-argv0	1.42 KB	-rwxr-xr-x
ssh-copy-id	10.12 KB	-rwxr-xr-x
ssh-keygen	390.23 KB	-rwxr-xr-x
ssh-keyscan	406.23 KB	-rwxr-xr-x
stat	79.05 KB	-rwxr-xr-x
stdbuf	62.83 KB	-rwxr-xr-x
sudo	133.6 KB	-rwsr-xr-x
sudoedit	133.6 KB	-rwsr-xr-x
sudoreplay	46.56 KB	-rwxr-xr-x
sum	38.74 KB	-rwxr-xr-x
systemd-analyze	1.43 MB	-rwxr-xr-x
systemd-cat	34.43 KB	-rwxr-xr-x
systemd-cgls	291.22 KB	-rwxr-xr-x
systemd-cgtop	303.3 KB	-rwxr-xr-x
systemd-delta	62.59 KB	-rwxr-xr-x
systemd-detect-virt	34.42 KB	-rwxr-xr-x
systemd-path	42.42 KB	-rwxr-xr-x
systemd-resolve	327.21 KB	-rwxr-xr-x
systemd-run	367.52 KB	-rwxr-xr-x
systemd-stdio-bridge	343.2 KB	-rwxr-xr-x
tabs	14.23 KB	-rwxr-xr-x
tac	34.73 KB	-rwxr-xr-x
tail	62.92 KB	-rwxr-xr-x
taskset	30.68 KB	-rwxr-xr-x
tee	34.73 KB	-rwxr-xr-x
test	46.7 KB	-rwxr-xr-x
tic	70.71 KB	-rwxr-xr-x
timedatectl	813 B	-rwxr-xr-x
timedatectl.real	295.22 KB	-rwxr-xr-x
timeout	55.38 KB	-rwxr-xr-x
tload	14.44 KB	-rwxr-xr-x
toe	14.34 KB	-rwxr-xr-x
top	106.51 KB	-rwxr-xr-x
touch	86.21 KB	-rwxr-xr-x
tput	14.3 KB	-rwxr-xr-x
tr	46.73 KB	-rwxr-xr-x
truncate	50.8 KB	-rwxr-xr-x
tset	18.42 KB	-rwxr-xr-x
tsort	34.67 KB	-rwxr-xr-x
tty	26.67 KB	-rwxr-xr-x
tzselect	14.86 KB	-rwxr-xr-x
ubuntu-core-launcher	124.53 KB	-rwsr-xr-x
ucf	39.68 KB	-rwxr-xr-x
ucfq	18.91 KB	-rwxr-xr-x
ucfr	10.47 KB	-rwxr-xr-x
unexpand	30.73 KB	-rwxr-xr-x
unicode_stop	530 B	-rwxr-xr-x
uniq	42.77 KB	-rwxr-xr-x
unlink	26.64 KB	-rwxr-xr-x
unlzma	67.11 KB	-rwxr-xr-x
unshare	18.72 KB	-rwxr-xr-x
unsquashfs	92.65 KB	-rwxr-xr-x
unxz	67.11 KB	-rwxr-xr-x
update-alternatives	46.61 KB	-rwxr-xr-x
uptime	10.33 KB	-rwxr-xr-x
users	30.7 KB	-rwxr-xr-x
utmpdump	14.52 KB	-rwxr-xr-x
vcs-run	6.75 KB	-rwxr-xr-x
vi	1.02 MB	-rwxr-xr-x
view	1.02 MB	-rwxr-xr-x
vim.tiny	1.02 MB	-rwxr-xr-x
vmstat	30.48 KB	-rwxr-xr-x
w	18.48 KB	-rwxr-xr-x
w.procps	18.48 KB	-rwxr-xr-x
wall	26.73 KB	-rwxr-sr-x
watch	23.14 KB	-rwxr-xr-x
wc	42.8 KB	-rwxr-xr-x
whereis	23.09 KB	-rwxr-xr-x
which	946 B	-rwxr-xr-x
who	46.86 KB	-rwxr-xr-x
whoami	26.67 KB	-rwxr-xr-x
wpa_passphrase	58 KB	-rwxr-xr-x
x86_64	14.38 KB	-rwxr-xr-x
xargs	66.21 KB	-rwxr-xr-x
xdelta3	150.84 KB	-rwxr-xr-x
xdg-open	38 B	-rwxr-xr-x
xdg-settings	886 B	-rwxr-xr-x
xxd	18.12 KB	-rwxr-xr-x
xz	67.11 KB	-rwxr-xr-x
xzcat	67.11 KB	-rwxr-xr-x
xzcmp	5.39 KB	-rwxr-xr-x
xzdiff	5.39 KB	-rwxr-xr-x
xzegrep	5.56 KB	-rwxr-xr-x
xzfgrep	5.56 KB	-rwxr-xr-x
xzgrep	5.56 KB	-rwxr-xr-x
xzless	1.78 KB	-rwxr-xr-x
xzmore	2.12 KB	-rwxr-xr-x
yes	30.67 KB	-rwxr-xr-x
zdump	14.42 KB	-rwxr-xr-x

Code Editor : tzselect

#!/bin/bash

PKGVERSION="(Ubuntu GLIBC 2.23-0ubuntu11.3+esm5) "
TZVERSION="2.23"
REPORT_BUGS_TO="<https://bugs.launchpad.net/ubuntu/+source/glibc/+bugs>"

# Ask the user about the time zone, and output the resulting TZ value to stdout.
# Interact with the user via stderr and stdin.

# Contributed by Paul Eggert.

# Porting notes:
#
# This script requires a Posix-like shell and prefers the extension of a
# 'select' statement.  The 'select' statement was introduced in the
# Korn shell and is available in Bash and other shell implementations.
# If your host lacks both Bash and the Korn shell, you can get their
# source from one of these locations:
#
#	Bash <http://www.gnu.org/software/bash/bash.html>
#	Korn Shell <http://www.kornshell.com/>
#	Public Domain Korn Shell <http://www.cs.mun.ca/~michael/pdksh/>
#
# For portability to Solaris 9 /bin/sh this script avoids some POSIX
# features and common extensions, such as $(...) (which works sometimes
# but not others), $((...)), and $10.
#
# This script also uses several features of modern awk programs.
# If your host lacks awk, or has an old awk that does not conform to Posix,
# you can use either of the following free programs instead:
#
#	Gawk (GNU awk) <http://www.gnu.org/software/gawk/>
#	mawk <http://invisible-island.net/mawk/>

# Specify default values for environment variables if they are unset.
: ${AWK=awk}
: ${TZDIR=/usr/share/zoneinfo}

# Output one argument as-is to standard output.
# Safer than 'echo', which can mishandle '\' or leading '-'.
say() {
    printf '%s\n' "$1"
}

# Check for awk Posix compliance.
($AWK -v x=y 'BEGIN { exit 123 }') </dev/null >/dev/null 2>&1
[ $? = 123 ] || {
	say >&2 "$0: Sorry, your '$AWK' program is not Posix compatible."
	exit 1
}

coord=
location_limit=10
zonetabtype=zone1970

usage="Usage: tzselect [--version] [--help] [-c COORD] [-n LIMIT]
Select a time zone interactively.

Options:

-c COORD
    Instead of asking for continent and then country and then city,
    ask for selection from time zones whose largest cities
    are closest to the location with geographical coordinates COORD.
    COORD should use ISO 6709 notation, for example, '-c +4852+00220'
    for Paris (in degrees and minutes, North and East), or
    '-c -35-058' for Buenos Aires (in degrees, South and West).

-n LIMIT
    Display at most LIMIT locations when -c is used (default $location_limit).

--version
    Output version information.

--help
    Output this help.

Report bugs to $REPORT_BUGS_TO."

# Ask the user to select from the function's arguments,
# and assign the selected argument to the variable 'select_result'.
# Exit on EOF or I/O error.  Use the shell's 'select' builtin if available,
# falling back on a less-nice but portable substitute otherwise.
if
  case $BASH_VERSION in
  ?*) : ;;
  '')
    # '; exit' should be redundant, but Dash doesn't properly fail without it.
    (eval 'set --; select x; do break; done; exit') </dev/null 2>/dev/null
  esac
then
  # Do this inside 'eval', as otherwise the shell might exit when parsing it
  # even though it is never executed.
  eval '
    doselect() {
      select select_result
      do
	case $select_result in
	"") echo >&2 "Please enter a number in range." ;;
	?*) break
	esac
      done || exit
    }

# Work around a bug in bash 1.14.7 and earlier, where $PS3 is sent to stdout.
    case $BASH_VERSION in
    [01].*)
      case `echo 1 | (select x in x; do break; done) 2>/dev/null` in
      ?*) PS3=
      esac
    esac
  '
else
  doselect() {
    # Field width of the prompt numbers.
    select_width=`expr $# : '.*'`

select_i=

while :
    do
      case $select_i in
      '')
	select_i=0
	for select_word
	do
	  select_i=`expr $select_i + 1`
	  printf >&2 "%${select_width}d) %s\\n" $select_i "$select_word"
	done ;;
      *[!0-9]*)
	echo >&2 'Please enter a number in range.' ;;
      *)
	if test 1 -le $select_i && test $select_i -le $#; then
	  shift `expr $select_i - 1`
	  select_result=$1
	  break
	fi
	echo >&2 'Please enter a number in range.'
      esac

# Prompt and read input.
      printf >&2 %s "${PS3-#? }"
      read select_i || exit
    done
  }
fi

while getopts c:n:t:-: opt
do
    case $opt$OPTARG in
    c*)
	coord=$OPTARG ;;
    n*)
	location_limit=$OPTARG ;;
    t*) # Undocumented option, used for developer testing.
	zonetabtype=$OPTARG ;;
    -help)
	exec echo "$usage" ;;
    -version)
	exec echo "tzselect $PKGVERSION$TZVERSION" ;;
    -*)
	say >&2 "$0: -$opt$OPTARG: unknown option; try '$0 --help'"; exit 1 ;;
    *)
	say >&2 "$0: try '$0 --help'"; exit 1 ;;
    esac
done

shift `expr $OPTIND - 1`
case $# in
0) ;;
*) say >&2 "$0: $1: unknown argument"; exit 1 ;;
esac

# Make sure the tables are readable.
TZ_COUNTRY_TABLE=$TZDIR/iso3166.tab
TZ_ZONE_TABLE=$TZDIR/$zonetabtype.tab
for f in $TZ_COUNTRY_TABLE $TZ_ZONE_TABLE
do
	<"$f" || {
		say >&2 "$0: time zone files are not set up correctly"
		exit 1
	}
done

# If the current locale does not support UTF-8, convert data to current
# locale's format if possible, as the shell aligns columns better that way.
# Check the UTF-8 of U+12345 CUNEIFORM SIGN URU TIMES KI.
! $AWK 'BEGIN { u12345 = "\360\222\215\205"; exit length(u12345) != 1 }' &&
    { tmp=`(mktemp -d) 2>/dev/null` || {
	tmp=${TMPDIR-/tmp}/tzselect.$$ &&
	(umask 77 && mkdir -- "$tmp")
    };} &&
    trap 'status=$?; rm -fr -- "$tmp"; exit $status' 0 HUP INT PIPE TERM &&
    (iconv -f UTF-8 -t //TRANSLIT <"$TZ_COUNTRY_TABLE" >$tmp/iso3166.tab) \
        2>/dev/null &&
    TZ_COUNTRY_TABLE=$tmp/iso3166.tab &&
    iconv -f UTF-8 -t //TRANSLIT <"$TZ_ZONE_TABLE" >$tmp/$zonetabtype.tab &&
    TZ_ZONE_TABLE=$tmp/$zonetabtype.tab

newline='
'
IFS=$newline

# Awk script to read a time zone table and output the same table,
# with each column preceded by its distance from 'here'.
output_distances='
  BEGIN {
    FS = "\t"
    while (getline <TZ_COUNTRY_TABLE)
      if ($0 ~ /^[^#]/)
        country[$1] = $2
    country["US"] = "US" # Otherwise the strings get too long.
  }
  function abs(x) {
    return x < 0 ? -x : x;
  }
  function min(x, y) {
    return x < y ? x : y;
  }
  function convert_coord(coord, deg, minute, ilen, sign, sec) {
    if (coord ~ /^[-+]?[0-9]?[0-9][0-9][0-9][0-9][0-9][0-9]([^0-9]|$)/) {
      degminsec = coord
      intdeg = degminsec < 0 ? -int(-degminsec / 10000) : int(degminsec / 10000)
      minsec = degminsec - intdeg * 10000
      intmin = minsec < 0 ? -int(-minsec / 100) : int(minsec / 100)
      sec = minsec - intmin * 100
      deg = (intdeg * 3600 + intmin * 60 + sec) / 3600
    } else if (coord ~ /^[-+]?[0-9]?[0-9][0-9][0-9][0-9]([^0-9]|$)/) {
      degmin = coord
      intdeg = degmin < 0 ? -int(-degmin / 100) : int(degmin / 100)
      minute = degmin - intdeg * 100
      deg = (intdeg * 60 + minute) / 60
    } else
      deg = coord
    return deg * 0.017453292519943296
  }
  function convert_latitude(coord) {
    match(coord, /..*[-+]/)
    return convert_coord(substr(coord, 1, RLENGTH - 1))
  }
  function convert_longitude(coord) {
    match(coord, /..*[-+]/)
    return convert_coord(substr(coord, RLENGTH))
  }
  # Great-circle distance between points with given latitude and longitude.
  # Inputs and output are in radians.  This uses the great-circle special
  # case of the Vicenty formula for distances on ellipsoids.
  function gcdist(lat1, long1, lat2, long2, dlong, x, y, num, denom) {
    dlong = long2 - long1
    x = cos(lat2) * sin(dlong)
    y = cos(lat1) * sin(lat2) - sin(lat1) * cos(lat2) * cos(dlong)
    num = sqrt(x * x + y * y)
    denom = sin(lat1) * sin(lat2) + cos(lat1) * cos(lat2) * cos(dlong)
    return atan2(num, denom)
  }
  # Parallel distance between points with given latitude and longitude.
  # This is the product of the longitude difference and the cosine
  # of the latitude of the point that is further from the equator.
  # I.e., it considers longitudes to be further apart if they are
  # nearer the equator.
  function pardist(lat1, long1, lat2, long2) {
    return abs(long1 - long2) * min(cos(lat1), cos(lat2))
  }
  # The distance function is the sum of the great-circle distance and
  # the parallel distance.  It could be weighted.
  function dist(lat1, long1, lat2, long2) {
    return gcdist(lat1, long1, lat2, long2) + pardist(lat1, long1, lat2, long2)
  }
  BEGIN {
    coord_lat = convert_latitude(coord)
    coord_long = convert_longitude(coord)
  }
  /^[^#]/ {
    here_lat = convert_latitude($2)
    here_long = convert_longitude($2)
    line = $1 "\t" $2 "\t" $3
    sep = "\t"
    ncc = split($1, cc, /,/)
    for (i = 1; i <= ncc; i++) {
      line = line sep country[cc[i]]
      sep = ", "
    }
    if (NF == 4)
      line = line " - " $4
    printf "%g\t%s\n", dist(coord_lat, coord_long, here_lat, here_long), line
  }
'

# Begin the main loop.  We come back here if the user wants to retry.
while

echo >&2 'Please identify a location' \
		'so that time zone rules can be set correctly.'

continent=
	country=
	region=

case $coord in
	?*)
		continent=coord;;
	'')

# Ask the user for continent or ocean.

echo >&2 'Please select a continent, ocean, "coord", or "TZ".'

quoted_continents=`
	  $AWK '
	    BEGIN { FS = "\t" }
	    /^[^#]/ {
              entry = substr($3, 1, index($3, "/") - 1)
              if (entry == "America")
		entry = entry "s"
              if (entry ~ /^(Arctic|Atlantic|Indian|Pacific)$/)
		entry = entry " Ocean"
              printf "'\''%s'\''\n", entry
            }
          ' <"$TZ_ZONE_TABLE" |
	  sort -u |
	  tr '\n' ' '
	  echo ''
	`

eval '
	    doselect '"$quoted_continents"' \
		"coord - I want to use geographical coordinates." \
		"TZ - I want to specify the time zone using the Posix TZ format."
	    continent=$select_result
	    case $continent in
	    Americas) continent=America;;
	    *" "*) continent=`expr "$continent" : '\''$[^ ]*$'\''`
	    esac
	'
	esac

case $continent in
	TZ)
		# Ask the user for a Posix TZ string.  Check that it conforms.
		while
			echo >&2 'Please enter the desired value' \
				'of the TZ environment variable.'
			echo >&2 'For example, GST-10 is a zone named GST' \
				'that is 10 hours ahead (east) of UTC.'
			read TZ
			$AWK -v TZ="$TZ" 'BEGIN {
				tzname = "[^-+,0-9][^-+,0-9][^-+,0-9]+"
				time = "[0-2]?[0-9](:[0-5][0-9](:[0-5][0-9])?)?"
				offset = "[-+]?" time
				date = "(J?[0-9]+|M[0-9]+\\.[0-9]+\\.[0-9]+)"
				datetime = "," date "(/" time ")?"
				tzpattern = "^(:.*|" tzname offset "(" tzname \
				  "(" offset ")?(" datetime datetime ")?)?)$"
				if (TZ ~ tzpattern) exit 1
				exit 0
			}'
		do
		    say >&2 "'$TZ' is not a conforming Posix time zone string."
		done
		TZ_for_date=$TZ;;
	*)
		case $continent in
		coord)
		    case $coord in
		    '')
			echo >&2 'Please enter coordinates' \
				'in ISO 6709 notation.'
			echo >&2 'For example, +4042-07403 stands for'
			echo >&2 '40 degrees 42 minutes north,' \
				'74 degrees 3 minutes west.'
			read coord;;
		    esac
		    distance_table=`$AWK \
			    -v coord="$coord" \
			    -v TZ_COUNTRY_TABLE="$TZ_COUNTRY_TABLE" \
			    "$output_distances" <"$TZ_ZONE_TABLE" |
		      sort -n |
		      sed "${location_limit}q"
		    `
		    regions=`say "$distance_table" | $AWK '
		      BEGIN { FS = "\t" }
		      { print $NF }
		    '`
		    echo >&2 'Please select one of the following' \
			    'time zone regions,'
		    echo >&2 'listed roughly in increasing order' \
			    "of distance from $coord".
		    doselect $regions
		    region=$select_result
		    TZ=`say "$distance_table" | $AWK -v region="$region" '
		      BEGIN { FS="\t" }
		      $NF == region { print $4 }
		    '`
		    ;;
		*)
		# Get list of names of countries in the continent or ocean.
		countries=`$AWK \
			-v continent="$continent" \
			-v TZ_COUNTRY_TABLE="$TZ_COUNTRY_TABLE" \
		'
			BEGIN { FS = "\t" }
			/^#/ { next }
			$3 ~ ("^" continent "/") {
			    ncc = split($1, cc, /,/)
			    for (i = 1; i <= ncc; i++)
				if (!cc_seen[cc[i]]++) cc_list[++ccs] = cc[i]
			}
			END {
				while (getline <TZ_COUNTRY_TABLE) {
					if ($0 !~ /^#/) cc_name[$1] = $2
				}
				for (i = 1; i <= ccs; i++) {
					country = cc_list[i]
					if (cc_name[country]) {
					  country = cc_name[country]
					}
					print country
				}
			}
		' <"$TZ_ZONE_TABLE" | sort -f`

# If there's more than one country, ask the user which one.
		case $countries in
		*"$newline"*)
			echo >&2 'Please select a country' \
				'whose clocks agree with yours.'
			doselect $countries
			country=$select_result;;
		*)
			country=$countries
		esac

# Get list of names of time zone rule regions in the country.
		regions=`$AWK \
			-v country="$country" \
			-v TZ_COUNTRY_TABLE="$TZ_COUNTRY_TABLE" \
		'
			BEGIN {
				FS = "\t"
				cc = country
				while (getline <TZ_COUNTRY_TABLE) {
					if ($0 !~ /^#/  &&  country == $2) {
						cc = $1
						break
					}
				}
			}
			/^#/ { next }
			$1 ~ cc { print $4 }
		' <"$TZ_ZONE_TABLE"`

# If there's more than one region, ask the user which one.
		case $regions in
		*"$newline"*)
			echo >&2 'Please select one of the following' \
				'time zone regions.'
			doselect $regions
			region=$select_result;;
		*)
			region=$regions
		esac

# Determine TZ from country and region.
		TZ=`$AWK \
			-v country="$country" \
			-v region="$region" \
			-v TZ_COUNTRY_TABLE="$TZ_COUNTRY_TABLE" \
		'
			BEGIN {
				FS = "\t"
				cc = country
				while (getline <TZ_COUNTRY_TABLE) {
					if ($0 !~ /^#/  &&  country == $2) {
						cc = $1
						break
					}
				}
			}
			/^#/ { next }
			$1 ~ cc && $4 == region { print $3 }
		' <"$TZ_ZONE_TABLE"`
		esac

# Make sure the corresponding zoneinfo file exists.
		TZ_for_date=$TZDIR/$TZ
		<"$TZ_for_date" || {
			say >&2 "$0: time zone files are not set up correctly"
			exit 1
		}
	esac

# Use the proposed TZ to output the current date relative to UTC.
	# Loop until they agree in seconds.
	# Give up after 8 unsuccessful tries.

extra_info=
	for i in 1 2 3 4 5 6 7 8
	do
		TZdate=`LANG=C TZ="$TZ_for_date" date`
		UTdate=`LANG=C TZ=UTC0 date`
		TZsec=`expr "$TZdate" : '.*:$[0-5][0-9]$'`
		UTsec=`expr "$UTdate" : '.*:$[0-5][0-9]$'`
		case $TZsec in
		$UTsec)
			extra_info="
Local time is now:	$TZdate.
Universal Time is now:	$UTdate."
			break
		esac
	done

# Output TZ info and ask the user to confirm.

echo >&2 ""
	echo >&2 "The following information has been given:"
	echo >&2 ""
	case $country%$region%$coord in
	?*%?*%)	say >&2 "	$country$newline	$region";;
	?*%%)	say >&2 "	$country";;
	%?*%?*) say >&2 "	coord $coord$newline	$region";;
	%%?*)	say >&2 "	coord $coord";;
	*)	say >&2 "	TZ='$TZ'"
	esac
	say >&2 ""
	say >&2 "Therefore TZ='$TZ' will be used.$extra_info"
	say >&2 "Is the above information OK?"

doselect Yes No
	ok=$select_result
	case $ok in
	Yes) break
	esac
do coord=
done

case $SHELL in
*csh) file=.login line="setenv TZ '$TZ'";;
*) file=.profile line="TZ='$TZ'; export TZ"
esac

say >&2 "
You can make this change permanent for yourself by appending the line
	$line
to the file '$file' in your home directory; then log out and log in again.

Here is that TZ value again, this time on standard output so that you
can use the $0 command in shell scripts:"

say "$TZ"

${this.title}

Code Editor : tzselect