abort
alarm
assert
atoi
bcopy
chdir
close
closedir
closelog
connect
endutent
execve
execvp
fclose
fflush
fgets
flock
fopen
fork
fputc
fputs
free
fstat
ftruncate
getenv
gethostbyaddr
gethostbyname
getopt
getopt_long
getpid
getpwnam
getpwuid
getsockname
getuid
herror
htons
inet_addr
inet_ntop
ioctl
loadavg
localtime
lseek
malloc
memcpy
memset
mmap
munmap
ntohl
open
opendir
openlog
perror
putc
putchar
qsort
rand
read
readdir
select
setsid
setutent
sigaction
sigaddset
sigemptyset
signal
sigprocmask
sleep
socket
srand
sscanf
stat
strcasecmp
strcat
strchr
strcmp
strcpy
strerror
strlen
strncmp
strncpy
strrchr
strtok
strtol
syslog
system
tcgetattr
tcsetattr
tgetnum
time
umask
uname
unlink
uptime
wait 
write