tlviewer@jam22:~/.local/share/nvim$ lua -e "for i, s in pairs(require'posix') do print(i,s) end" | grep func | sort
LOG_MASK	function: 0x55f445c07b90
S_ISBLK	function: 0x55f445c08340
S_ISCHR	function: 0x55f445bf6aa0
S_ISDIR	function: 0x55f445bf1050
S_ISFIFO	function: 0x55f445c0ba20
S_ISLNK	function: 0x55f445bfa000
S_ISREG	function: 0x55f445c066d0
S_ISSOCK	function: 0x55f445bfda30
_exit	function: 0x55f445c2f600
abort	function: 0x55f445bf4e90
accept	function: 0x55f445c1ef40
access	function: 0x55f445c2f630
alarm	function: 0x55f445c2f660
argerror	function: 0x55f445c4efd0
argtypeerror	function: 0x55f445c4d470
badoption	function: 0x55f445c496e0
basename	function: 0x55f445bfa030
bind	function: 0x55f445bf5b20
chdir	function: 0x55f445c2f6c0
checkstring	function: 0x55f445c22380
checktable	function: 0x55f445bf8150
chmod	function: 0x55f445c52040
chown	function: 0x55f445c2f720
clock_getres	function: 0x55f445c24670
clock_gettime	function: 0x55f445c247f0
close	function: 0x55f445c2f780
closelog	function: 0x55f445c22110
connect	function: 0x55f445c24870
creat	function: 0x55f445c52240
crypt	function: 0x55f445c2f7b0
ctermid	function: 0x55f445c0f830
dir	function: 0x55f445c063c0
dirname	function: 0x55f445bfa090
dup	function: 0x55f445c2f810
dup2	function: 0x55f445c2f870
endgrent	function: 0x55f445c102d0
endpwent	function: 0x55f445c03180
errno	function: 0x55f445bf6b40
euidaccess	function: 0x55f445c60b80
exec	function: 0x55f445c24950
execp	function: 0x55f445c24aa0
execx	function: 0x55f445c61010
fadvise	function: 0x55f445c24bc0
fcntl	function: 0x55f445c10470
fdatasync	function: 0x55f445c2f930
fdopen	function: 0x55f445bff200
fileno	function: 0x55f445c0f890
files	function: 0x55f445c07910
fnmatch	function: 0x55f445c24c70
fork	function: 0x55f445c2f990
fsync	function: 0x55f445c2f9c0
getaddrinfo	function: 0x55f445c1edc0
getcwd	function: 0x55f445c2fa20
getegid	function: 0x55f445c2fab0
getenv	function: 0x55f445bf4ef0
geteuid	function: 0x55f445c2fae0
getgid	function: 0x55f445c2fb10
getgrent	function: 0x55f445bf5b60
getgrgid	function: 0x55f445c00ff0
getgrnam	function: 0x55f445bf6b10
getgroup	function: 0x55f445c24dc0
getgroups	function: 0x55f445c2fa80
gethostid	function: 0x55f445c2fcf0
getlogin	function: 0x55f445c2fb40
getopt	function: 0x55f445c14f20
getpasswd	function: 0x55f445c25180
getpgrp	function: 0x55f445c2fba0
getpid	function: 0x55f445c4f9f0
getppid	function: 0x55f445c2fc60
getpwent	function: 0x55f445c06be0
getpwnam	function: 0x55f445c0df30
getpwuid	function: 0x55f445bfe310
getrlimit	function: 0x55f445c4fb60
getsockname	function: 0x55f445c1f1e0
gettimeofday	function: 0x55f445c4fbe0
getuid	function: 0x55f445c2fcc0
glob	function: 0x55f445bf21d0
gmtime	function: 0x55f445c4fd30
grantpt	function: 0x55f445bf4f20
hostid	function: 0x55f445c2fcf0
isatty	function: 0x55f445c2fd50
isgraph	function: 0x55f445c4fde0
isprint	function: 0x55f445c4fe50
kill	function: 0x55f445c14460
killpg	function: 0x55f445c144c0
link	function: 0x55f445c2fdb0
listen	function: 0x55f445c1eee0
localtime	function: 0x55f445c503d0
lseek	function: 0x55f445c2fe10
lstat	function: 0x55f445c09b70
mkdir	function: 0x55f445c525b0
mkdtemp	function: 0x55f445bf4f50
mkfifo	function: 0x55f445c52690
mkstemp	function: 0x55f445bf4fb0
mktime	function: 0x55f445c50560
msgget	function: 0x55f445c52830
msgrcv	function: 0x55f445c08680
msgsnd	function: 0x55f445c08620
nanosleep	function: 0x55f445c50680
nice	function: 0x55f445c2fe70
open	function: 0x55f445c605e0
openlog	function: 0x55f445c50860
openpt	function: 0x55f445bf5010
openpty	function: 0x55f445c60e90
optstring	function: 0x55f445c2b590
pathconf	function: 0x55f445c50a20
pclose	function: 0x55f445c61270
pipe	function: 0x55f445c2ff30
poll	function: 0x55f445bfdbc0
popen	function: 0x55f445c614b0
popen_pipeline	function: 0x55f445c615f0
posix_fadvise	function: 0x55f445c104d0
ptsname	function: 0x55f445bf5040
raise	function: 0x55f445c14520
read	function: 0x55f445c2ff60
readlink	function: 0x55f445c2ff90
realpath	function: 0x55f445bf5070
recv	function: 0x55f445c1efa0
recvfrom	function: 0x55f445c1f000
rename	function: 0x55f445bff260
rmdir	function: 0x55f445c2fff0
rpoll	function: 0x55f445bfdbf0
sched_setscheduler	function: 0x55f445c0fe20
send	function: 0x55f445c1f060
sendto	function: 0x55f445c1f0c0
set_errno	function: 0x55f445c0a110
setenv	function: 0x55f445bf50d0
setgrent	function: 0x55f445c06340
setlogmask	function: 0x55f445c60750
setpid	function: 0x55f445c30050
setpwent	function: 0x55f445c03d70
setrlimit	function: 0x55f445c50ba0
setsockopt	function: 0x55f445c1f180
shutdown	function: 0x55f445c1f120
signal	function: 0x55f445c146c0
sleep	function: 0x55f445c300b0
socket	function: 0x55f445c1ed30
socketpair	function: 0x55f445c1ed60
spawn	function: 0x55f445c61160
stat	function: 0x55f445c50e50
statvfs	function: 0x55f445c50f40
strftime	function: 0x55f445c510a0
strptime	function: 0x55f445c51190
sync	function: 0x55f445c30110
sysconf	function: 0x55f445c512c0
syslog	function: 0x55f445c220e0
tcdrain	function: 0x55f445bf4a40
tcflow	function: 0x55f445bf4aa0
tcflush	function: 0x55f445bf4b00
tcgetattr	function: 0x55f445bf4b60
tcgetpgrp	function: 0x55f445c30230
tcsendbreak	function: 0x55f445c1e390
tcsetattr	function: 0x55f445c1e3f0
tcsetpgrp	function: 0x55f445c30290
time	function: 0x55f445c2da90
timeradd	function: 0x55f445c616b0
timercmp	function: 0x55f445c61760
timersub	function: 0x55f445c61810
times	function: 0x55f445c513a0
toomanyargerror	function: 0x55f445c4d580
ttyname	function: 0x55f445c301d0
umask	function: 0x55f445c60880
uname	function: 0x55f445c51490
unlink	function: 0x55f445c302f0
unlockpt	function: 0x55f445bf5130
utime	function: 0x55f445c23970
wait	function: 0x55f445c18180
write	function: 0x55f445c30350