/etc/hosts.equiv (5) - list of hosts and users that are granted "trusted" r command access to your system
/etc/nscd.conf (5)   - name service cache daemon configuration file
/usr/sbin/nscd (8)   - name service cache daemon
CMSG_ALIGN, CMSG_SPACE, CMSG_NXTHDR, CMSG_FIRSTHDR (3) - Access ancillary data.
LDP (7)              - Intro to the Linux Documentation Project, with help, guides and documents
MB_CUR_MAX (3)       - maximum length of a multibyte character in the current locale
MB_LEN_MAX (3)       - maximum multibyte length of a character across all locales
UTF-8 (7)            - an ASCII compatible multi-byte Unicode encoding
Unicode (7)          - the Universal Character Set
__clone (2)          - create a child process
__setfpucw (3)       - set fpu control word on i386 architecture (obsolete)
_exit (2)            - terminate the current process
_llseek (2)          - reposition read/write file offset
abort (3)            - cause abnormal program termination
abs, labs, llabs, imaxabs (3) - compute the absolute value of an integer.
accept (2)           - accept a connection on a socket
access (2)           - check user's permissions for a file
acct (2)             - switch process accounting on or off
acct (5)             - execution accounting file
acos (3)             - arc cosine function
acosh (3)            - inverse hyperbolic cosine function
adjtimex (2)         - tune kernel clock
afs_syscall, break, ftime, gtty, lock, mpx, phys, prof, profil, stty, ulimit (2) - unimplemented system calls
alarm (2)            - set an alarm clock for delivery of a signal
alloca (3)           - memory allocator
arp (7)              - Linux ARP kernel module.
ascii (7)            - the ASCII character set encoded in octal, decimal, and hexadecimal
asctime, ctime, gmtime, localtime, mktime (3) - transform binary date and time to ASCII
asin (3)             - arc sine function
asinh (3)            - inverse hyperbolic sine function
assert (3)           - Abort the program if assertion is false.
atan (3)             - arc tangent function
atan2 (3)            - arc tangent function of two variables
atanh (3)            - inverse hyperbolic tangent function
atexit (3)           - register a function to be called at normal program termination.
atof (3)             - convert a string to a double.
atoi, atol, atoll, atoq (3) - convert a string to an integer.
bcmp (3)             - compare byte strings
bcmp, bcopy, bzero, memccpy, memchr, memcmp, memcpy, memfrob, memmem, memmove, memset (3) - byte string operations
bcopy (3)            - copy byte strings
bdflush (2)          - start, flush, or tune buffer-dirty-flush daemon
bind (2)             - bind a name to a socket
bindresvport (3)     - bind a socket to a privileged IP port
bootparam (7)        - Introduction to boot time parameters of the Linux kernel
brk, sbrk (2)        - change data segment size
bsearch (3)          - binary search of a sorted array.
btowc (3)            - convert single byte to wide character
btree (3)            - btree database access method
bzero (3)            - write zeros to a byte string
cacheflush (2)       - flush contents of instruction and/or data cache
calloc, malloc, free, realloc (3) - Allocate and free dynamic memory
capget, capset (2)   - set/get process capabilities
catgets (3)          - get message from a message catalog
catopen, catclose (3) - open/close a message catalog
cbrt (3)             - cube root function
ceil (3)             - smallest integral value not less than x
charmap (5)          - character symbols to define character encodings
charsets (7)         - programmer's view of character sets and internationalization
chdir, fchdir (2)    - change working directory
chgrp (1)            - change group ownership of files
chmod (1)            - change access permissions of files
chmod, fchmod (2)    - change permissions of a file
chown (1)            - change file owner and group
chown, fchown, lchown (2) - change ownership of a file
chroot (2)           - change root directory
clearerr, feof, ferror, fileno (3) - check and reset stream status
clock (3)            - Determine processor time
close (2)            - close a file descriptor
closedir (3)         - close a directory
closelog, openlog, syslog (3) - send messages to the system logger
confstr (3)          - get configuration dependent string variables
connect (2)          - initiate a connection on a socket
console (4)          - console terminal and virtual consoles
console ioctl (4)    - ioctl's for console terminal and virtual consoles
console_codes (4)    - Linux console escape and control sequences
copysign (3)         - copy sign of a number
cos (3)              - cosine function
cosh (3)             - hyperbolic cosine function
cp (1)               - copy files and directories
crypt (3)            - password and data encryption
ctermid (3)          - get controlling terminal name
daemon (3)           - run in the background
dbopen (3)           - database access methods
dd (1)               - convert and copy a file
ddp (7)              - Linux AppleTalk protocol implementation
df (1)               - report filesystem disk space usage
diff (1)             - find differences between two files
difftime (3)         - calculate time difference
dir_colors (5)       - configuration file for dircolors(1)
dircolors (1)        - color setup for `ls'
dirname, basename (3) - Parse pathname components
div (3)              - computes the quotient and remainder of integer division
dlclose, dlerror, dlopen, dlsym (3) - Programming interface to dynamic linking loader.
drand48, erand48, lrand48, nrand48, mrand48, jrand48, srand48, seed48, lcong48 (3) - generate uniformly distributed pseudo-random numbers
drem (3)             - floating-point remainder function
dsp56k (4)           - DSP56001 interface device
du (1)               - estimate file space usage
dup, dup2 (2)        - duplicate a file descriptor
ecvt, fcvt (3)       - convert a floating-point number to a string.
encrypt (3)          - Encrypt 64 bits messages
environ (5)          - user environment
erf, erfc (3)        - error function and complementary error function
errno (3)            - number of last error
execl, execlp, execle, execv, execvp (3) - execute a file
execve (2)           - execute program
exit (3)             - cause normal program termination
exp, log, log10, pow (3) - exponential, logarithmic and power functions
expm1, log1p (3)     - exponential minus 1, logarithm of 1 plus argument
fabs (3)             - absolute value of floating-point number
fclose (3)           - close a stream
fcloseall (3)        - close all open streams
fcntl (2)            - manipulate file descriptor
fd (4)               - floppy disk device
fdatasync (2)        - synchronize a file's in-core data with that on disk
feclearexcept, fegetexceptflag, feraiseexcept, fesetexceptflag, fetestexcept, fegetenv, fegetround, feholdexcept, fesetround, fesetenv, feupdateenv (3) - C99 floating point rounding and exception handling
fflush (3)           - flush a stream
ffs (3)              - find first bit set in a word
fgetc, fgets, getc, getchar, gets, ungetc (3) - input of characters and strings
fgetgrent (3)        - get group file entry
fgetpos, fseek, fsetpos, ftell, rewind (3) - reposition a stream
fgetpwent (3)        - get password file entry
fgetwc (3)           - read a wide character from a FILE stream
fgetws (3)           - read a wide character string from a FILE stream
fifo (4)             - first-in first-out special file, named pipe
filesystems (5)      - Linux filesystem types: minix, ext, ext2, xia, msdos, umsdos, vfat, proc, nfs, iso9660, hpfs, sysv, smb, ncpfs
flock (2)            - apply or remove an advisory lock on an open file
floor (3)            - largest integral value not greater than x
fmod (3)             - floating-point remainder function
fnmatch (3)          - match filename or pathname
fopen, fdopen, freopen (3) - stream open functions
fork (2)             - create a child process
fpathconf, pathconf (3) - get configuration values for files
fputc, fputs, putc, putchar, puts (3) - output of characters and strings
fputwc (3)           - write a wide character to a FILE stream
fputws (3)           - write a wide character string to a FILE stream
fread, fwrite (3)    - binary stream input/output
frexp (3)            - convert floating-point number to fractional and integral components
fsync, fdatasync (2) - synchronize a file's complete in-core state with that on disk
ftime (3)            - return date and time
ftok (3)             - convert a pathname and a project identifier to a System V IPC key
ftpusers (5)         - list of users that may not log in via the FTP daemon
fts, (3)             - fts_open, - fts_read, - fts_children, - fts_set, - fts_close - traverse a file hierarchy
ftw, nftw (3)        - file tree walk
full (4)             - always full device
fwide (3)            - set and determine the orientation of a FILE stream
gcvt (3)             - convert a floating-point number to a string.
getaddrinfo (3)      - network address and service translation
getcwd, get_current_dir_name, getwd (3) - Get current working directory
getdents (2)         - get directory entries
getdirentries (3)    - get directory entries in a filesystem independent format
getdomainname, setdomainname (2) - get/set domain name
getdtablesize (2)    - get descriptor table size
getenv (3)           - get an environment variable
getgid, getegid (2)  - get group identity
getgrent, setgrent, endgrent (3) - get group file entry
getgrnam, getgrgid (3) - get group file entry
getgroups, setgroups (2) - get/set list of supplementary group IDs
gethostbyname, gethostbyaddr, sethostent, endhostent, herror, hstrerror (3) - get network host entry
gethostid, sethostid (2) - get or set the unique identifier of the current host
gethostname, sethostname (2) - get/set host name
getipnodebyname, getipnodebyaddr, freehostent (3) - get network host names and addresses
getitimer, setitimer (2) - get or set value of an interval timer
getlogin, cuserid (3) - get user name
getmntent, setmntent, addmntent, endmntent, hasmntopt (3) - get file system descriptor file entry
getnameinfo (3)      - address-to-name translation in protocol-independent manner
getnetent, getnetbyname, getnetbyaddr, setnetent, endnetent (3) - get network entry
getopt (3)           - Parse command line options
getpagesize (2)      - get system page size
getpass (3)          - get a password
getpeername (2)      - get name of connected peer
getpid, getppid (2)  - get process identification
getpriority, setpriority (2) - get/set program scheduling priority
getprotoent, getprotobyname, getprotobynumber, setprotoent, endprotoent (3) - get protocol entry
getpw (3)            - Re-construct password line entry
getpwent, setpwent, endpwent (3) - get password file entry
getpwnam, getpwuid (3) - get password file entry
getresuid, getresgid (2) - get real, effective and saved user or group ID
getrlimit, getrusage, setrlimit (2) - get/set resource limits and usage
getrpcent, getrpcbyname, getrpcbynumber (3) - get RPC entry
getrpcport (3)       - get RPC port number
getservent, getservbyname, getservbyport, setservent, endservent (3) - get service entry
getsid (2)           - get session ID
getsockname (2)      - get socket name
getsockopt, setsockopt (2) - get and set options on sockets
gettimeofday, settimeofday (2) - get / set time
getuid, geteuid (2)  - get user identity
getusershell, setusershell, endusershell (3) - get legal user shells
getutent, getutid, getutline, pututline, setutent, endutent, utmpname (3) - access utmp file entries
getw, putw (3)       - input and output of words (ints)
getwchar (3)         - read a wide character from standard input
glob (7)             - Globbing pathnames
glob, globfree (3)   - find pathnames matching a pattern, free memory from glob()
group (5)            - user group file
hash (3)             - hash database access method
hcreate, hdestroy, hsearch (3) - hash table management
hd (4)               - MFM/IDE hard disk devices
hier (7)             - Description of the file system hierarchy
host.conf (5)        - resolver configuration file
hosts (5)            - The static table lookup for host names
htonl, htons, ntohl, ntohs (3) - convert values between host and network byte order
hypot (3)            - Euclidean distance function
icmp, IPPROTO_ICMP (7) - Linux IPv4 ICMP kernel module.
iconv (3)            - perform character set conversion
iconv_close (3)      - deallocate descriptor for character set conversion
iconv_open (3)       - allocate descriptor for character set conversion
idle (2)             - make process 0 idle
index, rindex (3)    - locate character in string
inet_aton, inet_addr, inet_network, inet_ntoa, inet_makeaddr, inet_lnaof, inet_netof (3) - Internet address manipulation routines
inet_ntop (3)        - Parse network address structures
inet_pton (3)        - Create a network address structure
infnan (3)           - deal with infinite or not-a-number (NaN) result
initgroups (3)       - initialize the supplementary group access list
initrd (4)           - boot loader initialized RAM disk
insque, remque (3)   - insert/remove an item from a queue
install (1)          - copy files and set attributes
intro (1)            - Introduction to user commands
intro (2)            - Introduction to system calls
intro (3)            - Introduction to library functions
intro (4)            - Introduction to special files
intro (5)            - Introduction to file formats
intro (6)            - Introduction to games
intro (7)            - Introduction to conventions and miscellany section
intro (8)            - Introduction to administration and privileged commands
ioctl (2)            - control device
ioctl_list (2)       - list of ioctl calls in Linux/i386 kernel
ioperm (2)           - set port input/output permissions
iopl (2)             - change I/O privilege level
ip (7)               - Linux IPv4 protocol implementation
ipc (2)              - System V IPC system calls
ipc (5)              - System V interprocess communication mechanisms
ipv6, PF_INET6 (7)   - Linux IPv6 protocol implementation
isalnum, isalpha, isascii, isblank, iscntrl, isdigit, isgraph, islower, isprint, ispunct, isspace, isupper, isxdigit (3) - character classification routines
isatty (3)           - does this descriptor refer to a terminal
isinf, isnan, finite (3) - test for infinity or not-a-number (NaN)
iso_8859-1 (7)       - the ISO 8859-1 character set encoded in octal, decimal, and hexadecimal
iso_8859-15 (7)      - the ISO 8859-15 character set encoded in octal, decimal, and hexadecimal
iso_8859-2 (7)       - the ISO 8859-2 character set encoded in octal, decimal, and hexadecimal
iso_8859-7 (7)       - the ISO 8859-7 character set encoded in octal, decimal, and hexadecimal
issue (5)            - pre-login message and identification file
iswalnum (3)         - test for alphanumeric wide character
iswalpha (3)         - test for alphabetic wide character
iswblank (3)         - test for whitespace wide character
iswcntrl (3)         - test for control wide character
iswctype (3)         - wide character classification
iswdigit (3)         - test for decimal digit wide character
iswgraph (3)         - test for graphic wide character
iswlower (3)         - test for lowercase wide character
iswprint (3)         - test for printing wide character
iswpunct (3)         - test for punctuation or symbolic wide character
iswspace (3)         - test for whitespace wide character
iswupper (3)         - test for uppercase wide character
iswxdigit (3)        - test for hexadecimal digit wide character
j0, j1, jn, y0, y1, yn (3) - Bessel functions
kill (2)             - send signal to a process
killpg (2)           - send signal to a process group
killpg (3)           - send signal to all members of a process group.
ldexp (3)            - multiply floating-point number by integral power of 2
ldiv (3)             - computes the quotient and remainder of long integer division.
lfind, lsearch (3)   - linear search of an array.
lgamma (3)           - log gamma function
link (2)             - make a new name for a file
listen (2)           - listen for connections on a socket
ln (1)               - make links between files
locale (5)           - Describes a locale definition file
locale (7)           - Description of multi-language support
localeconv (3)       - get numeric formatting information
lockf (3)            - apply, test or remove a POSIX lock on an open file
longjmp, siglongjmp (3) - non-local jump to a saved stack context
lp (4)               - line printer devices
ls, dir, vdir (1)    - list directory contents
lseek (2)            - reposition read/write file offset
mailaddr (7)         - mail addressing description
man (7)              - macros to format man pages
mblen (3)            - determine number of bytes in next multibyte character
mbrlen (3)           - determine number of bytes in next multibyte character
mbrtowc (3)          - convert a multibyte sequence to a wide character
mbsinit (3)          - test for initial shift state
mbsnrtowcs (3)       - convert a multibyte string to a wide character string
mbsrtowcs (3)        - convert a multibyte string to a wide character string
mbstowcs (3)         - convert a multibyte string to a wide character string
mbtowc (3)           - convert a multibyte sequence to a wide character
mdoc (7)             - quick reference guide for the -mdoc - macro package
mdoc.samples (7)     - tutorial sampler for writing manuals with -mdoc -
mem, kmem, port (4)  - system memory, kernel memory and system ports
memccpy (3)          - copy memory area
memchr (3)           - scan memory for a character
memcmp (3)           - compare memory areas
memcpy (3)           - copy memory area
memfrob (3)          - frobnicate (encrypt) a memory area
memmem (3)           - locate a substring
memmove (3)          - copy memory area
memset (3)           - fill memory with a constant byte
mkdir (1)            - make directories
mkdir (2)            - create a directory
mkfifo (1)           - make FIFOs (named pipes)
mkfifo (3)           - make a FIFO special file (a named pipe)
mknod (1)            - make block or character special files
mknod (2)            - create a special or ordinary file
mkstemp (3)          - create a unique temporary file
mktemp (3)           - make a unique temporary file name
mlock (2)            - disable paging for some parts of memory
mlockall (2)         - disable paging for calling process
mmap, munmap (2)     - map or unmap files or devices into memory
modf (3)             - extract signed integral and fractional values from floating-point number
modify_ldt (2)       - get or set ldt
motd (5)             - message of the day
mount, umount (2)    - mount and unmount filesystems.
mouse (4)            - serial mouse interface
mpool (3)            - shared memory buffer pool
mprotect (2)         - control allowable accesses to a region of memory
mremap (2)           - re-map a virtual memory address
msgctl (2)           - message control operations
msgget (2)           - get a message queue identifier
msgop (2)            - message operations
msync (2)            - synchronize a file with a memory map
munlock (2)          - reenable paging for some parts of memory
munlockall (2)       - reenable paging for calling process
mv (1)               - move (rename) files
nanosleep (2)        - pause execution for a specified time
netdevice (7)        - Low level access to Linux network devices.
netlink (3)          - Netlink macros
netlink, PF_NETLINK (7) - Communication between kernel and user.
nfsservctl (2)       - syscall interface to kernel nfs daemon
nice (2)             - change process priority
nl_langinfo (3)      - query language and locale information
nologin (5)          - prevent non-root users from logging into the system
none (2)             - list of all system calls
none (2)             - undocumented system calls
none (3)             - undocumented library functions
nsswitch.conf (5)    - System Databases and Name Service Switch configuration file
null, zero (4)       - data sink
oldfstat, oldlstat, oldstat, oldolduname, olduname (2) - obsolete system calls
on_exit (3)          - register a function to be called at normal program termination.
open, creat (2)      - open and possibly create a file or device
opendir (3)          - open a directory
outb, outw, outl, outsb, outsw, outsl (2) - port output inb, inw, inl, insb, insw, insl - port input outb_p, outw_p, outl_p, inb_p, inw_p, inl_p - paused I/O
packet, PF_PACKET (7) - packet interface on device level.
passwd (5)           - password file
pause (2)            - wait for signal
perror (3)           - print a system error message
personality (2)      - set the process execution domain
pipe (2)             - create pipe
pivot_root (2)       - change the root file system
poll (2)             - wait for some event on a file descriptor
popen, pclose (3)    - process I/O
prctl (2)            - operations on a process
pread, pwrite (2)    - read from or write to a file descriptor at a given offset
printf, fprintf, sprintf, snprintf, vprintf, vfprintf, vsprintf, vsnprintf (3) - formatted output conversion
proc (5)             - process information pseudo-filesystem
profil (3)           - execution time profile
protocols (5)        - the protocols definition file
psignal (3)          - print signal message
ptrace (2)           - process trace
putenv (3)           - change or add an environment variable
putpwent (3)         - write a password file entry
putwchar (3)         - write a wide character to standard output
qsort (3)            - sorts an array
quotactl (2)         - manipulate disk quotas
raise (3)            - send a signal to the current process
ram (4)              - ram disk device
rand, srand (3)      - random number generator.
random, srandom, initstate, setstate (3) - random number generator.
random, urandom (4)  - kernel random number source devices
raw, SOCK_RAW (7)    - Linux IPv4 raw sockets
rcmd, (3)            - rresvport, - iruserok, - ruserok - routines for returning a stream to a remote command
re_comp, re_exec (3) - BSD regex functions
read (2)             - read from a file descriptor
readdir (2)          - read directory entry
readdir (3)          - read a directory
readlink (2)         - read value of a symbolic link
readv, writev (2)    - read or write a vector
readv, writev (3)    - read or write data into multiple buffers
realpath (3)         - return the canonicalized absolute pathname
reboot (2)           - reboot or enable/disable Ctrl-Alt-Del
recno (3)            - record number database access method
recv, recvfrom, recvmsg (2) - receive a message from a socket
regcomp, regexec, regerror, regfree (3) - POSIX regex functions
regex (7)            - POSIX 1003.2 regular expressions
remove (3)           - delete a name and possibly the file it refers to
rename (2)           - change the name or location of a file
res_init, res_query, res_search, res_querydomain, res_mkquery, res_send, dn_comp, dn_expand (3) - resolver routines
resolver (5)         - resolver configuration file
rewinddir (3)        - reset directory stream
rint (3)             - round to closest integer
rm (1)               - remove files or directories
rmdir (1)            - remove empty directories
rmdir (2)            - delete a directory
rpc (3)              - library routines for remote procedure calls
rpc (5)              - rpc program number data base
rtnetlink (3)        - Macros to manipuate rtnetlink messages
rtnetlink, NETLINK_ROUTE (7) - Linux IPv4 routing socket.
scandir, alphasort (3) - scan a directory for matching entries
scanf, fscanf, sscanf, vscanf, vsscanf, vfscanf (3) - input format conversion
sched_get_priority_max, sched_get_priority_min (2) - get static priority range
sched_rr_get_interval (2) - get the SCHED_RR interval for the named process
sched_setparam, sched_getparam (2) - set and get scheduling parameters
sched_setscheduler, sched_getscheduler (2) - set and get scheduling algorithm/parameters
sched_yield (2)      - yield the processor
sd (4)               - Driver for SCSI Disk Drives
securetty (5)        - file which lists ttys from which root can log in
seekdir (3)          - set the position of the next readdir() call in the directory stream.
select, pselect, FD_CLR, FD_ISSET, FD_SET, FD_ZERO (2) - synchronous I/O multiplexing
semctl (2)           - semaphore control operations
semget (2)           - get a semaphore set identifier
semop (2)            - semaphore operations
send, sendto, sendmsg (2) - send a message from a socket
sendfile (2)         - transfer data between file descriptors
services (5)         - Internet network services list
setbuf, setbuffer, setlinebuf, setvbuf (3) - stream buffering operations
setenv (3)           - change or add an environment variable
seteuid, setegid (2) - set effective user or group ID
setfsgid (2)         - set group identity used for file system checks
setfsuid (2)         - set user identity used for file system checks
setgid (2)           - set group identity
setjmp, sigsetjmp (3) - save stack context for non-local goto
setlocale (3)        - set the current locale.
setpgid, getpgid, setpgrp, getpgrp (2) - set/get process group
setresuid, setresgid (2) - set real, effective and saved user or group ID
setreuid, setregid (2) - set real and/or effective user or group ID
setsid (2)           - creates a session and sets the process group ID
setuid (2)           - set user identity
setup (2)            - setup devices and file systems, mount root file system
shells (5)           - pathnames of valid login shells
shmctl (2)           - shared memory control
shmget (2)           - allocates a shared memory segment
shmop (2)            - shared memory operations
shutdown (2)         - shut down part of a full-duplex connection
sigaction, sigprocmask, sigpending, sigsuspend (2) - POSIX signal handling functions.
sigblock, siggetmask, sigsetmask, sigmask (2) - manipulate the signal mask
sigemptyset, sigfillset, sigaddset, sigdelset, sigismember (3) - POSIX signal set operations.
siginterrupt (3)     - allow signals to interrupt system calls
signal (2)           - ANSI C signal handling
signal (7)           - list of available signals
sigpause (2)         - atomically release blocked signals and wait for interrupt
sigreturn (2)        - return from signal handler and cleanup stack frame
sigvec (2)           - BSD software signal facilities
sin (3)              - sine function
sinh (3)             - hyperbolic sine function
sleep (3)            - Sleep for the specified number of seconds
socket (2)           - create an endpoint for communication
socket (7)           - Linux socket interface
socketcall (2)       - socket system calls
socketpair (2)       - create a pair of connected sockets
sqrt (3)             - square root function
st (4)               - SCSI tape device
stat, fstat, lstat (2) - get file status
statfs, fstatfs (2)  - get file system statistics
stdarg (3)           - variable argument lists
stdin, (3)           - stdout, - stderr - standard I/O streams
stdio (3)            - standard input/output library functions
stime (2)            - set time
stpcpy (3)           - copy a string returning a pointer to its end
stpncpy (3)          - copy a fixed-size string, returning a pointer to its end
strcasecmp, strcat, strchr, strcmp, strcoll, strcpy, strcspn, strdup, strfry, strlen, strncat, strncmp, strncpy, strncasecmp, strpbrk, strrchr, strsep, strspn, strstr, strtok, strxfrm, index, rindex (3) - string operations
strcasecmp, strncasecmp (3) - compare two strings ignoring case
strcat, strncat (3)  - concatenate two strings
strchr, strrchr (3)  - locate character in string
strcmp, strncmp (3)  - compare two strings
strcoll (3)          - compare two strings using the current locale
strcpy, strncpy (3)  - copy a string
strdup (3)           - duplicate a string
strerror (3)         - return string describing error code
strfmon (3)          - convert monetary value to a string
strfry (3)           - randomize a string
strftime (3)         - format date and time
strlen (3)           - calculate the length of a string
strnlen (3)          - determine the length of a fixed-size string
strpbrk (3)          - search a string for any of a set of characters
strptime (3)         - convert a string representation of time to a time tm structure
strsep (3)           - extract token from string
strsignal (3)        - return string describing signal
strspn, strcspn (3)  - search a string for a set of characters
strstr (3)           - locate a substring
strtod (3)           - convert ASCII string to double
strtok, strtok_r (3) - extract tokens from strings
strtol (3)           - convert a string to a long integer.
strtoul (3)          - convert a string to an unsigned long integer.
strxfrm (3)          - string transformation
suffixes (7)         - list of file suffixes
swab (3)             - swap adjacent bytes
swapon, swapoff (2)  - start/stop swapping to file/device
symlink (2)          - make a new name for a file
sync (2)             - commit buffer cache to disk.
sync (8)             - synchronize data on disk with memory
sysconf (3)          - Get configuration information at runtime
sysctl (2)           - read/write system parameters
sysfs (2)            - get file system type information
sysinfo (2)          - returns information on overall system statistics
syslog (2)           - read and/or clear kernel message ring buffer; set console_loglevel
system (3)           - execute a shell command
tan (3)              - tangent function
tanh (3)             - hyperbolic tangent function
tcp (7)              - TCP protocol.
telldir (3)          - return current location in directory stream.
tempnam (3)          - create a name for a temporary file
termcap (5)          - terminal capability database
termios, tcgetattr, tcsetattr, tcsendbreak, tcdrain, tcflush, tcflow, cfmakeraw, cfgetospeed, cfgetispeed, cfsetispeed, cfsetospeed, tcgetpgrp, tcsetpgrp (3) - get and set terminal attributes, line control, get and set baud rate, get and set terminal foreground process group ID
time (1)             - time a simple command or give resource usage
time (2)             - get time in seconds
times (2)            - get process times
tmpfile (3)          - create a temporary file
tmpnam (3)           - create a name for a temporary file
toascii (3)          - convert character to ASCII
touch (1)            - change file timestamps
toupper, tolower (3) - convert letter to upper or lower case
towctrans (3)        - wide-character transliteration
towlower (3)         - convert a wide character to lowercase
towupper (3)         - convert a wide character to uppercase
truncate, ftruncate (2) - truncate a file to a specified length
tsearch, tfind, tdelete, twalk (3) - manage a binary tree
tty (4)              - controlling terminal
ttyname (3)          - return name of a terminal
ttys (4)             - serial terminal lines
ttytype (5)          - terminal device to default terminal type mapping
tzfile (5)           - time zone information
tzselect (8)         - select a time zone
tzset (3)            - initialize time conversion information
udp (7)              - User Datagram Protocol for IPv4
ulimit (3)           - get and set user limits
umask (2)            - set file creation mask
uname (2)            - get name and information about current kernel
ungetwc (3)          - push back a wide character onto a FILE stream
unix, PF_UNIX, AF_UNIX, PF_LOCAL, AF_LOCAL (7) - Sockets for local interprocess communication.
unlink (2)           - delete a name and possibly the file it refers to
updwtmp, logwtmp (3) - append an entry to the wtmp file
uri, url, urn (7)    - uniform resource identifier (URI), including a URL or URN
uselib (2)           - select shared library
usleep (3)           - suspend execution for microsecond intervals
ustat (2)            - get file system statistics
utime, utimes (2)    - change access and/or modification times of an inode
utmp, wtmp (5)       - login records
vcs, vcsa (4)        - virtual console memory
vfork (2)            - create a child process and block parent
vhangup (2)          - virtually hangup the current tty
vm86old, vm86 (2)    - enter virtual 8086 mode
wait, waitpid (2)    - wait for process termination
wait3, wait4 (2)     - wait for process termination, BSD style
wavelan (4)          - AT&T GIS WaveLAN ISA device driver
wcpcpy (3)           - copy a wide character string, returning a pointer to its end
wcpncpy (3)          - copy a fixed-size string of wide characters, returning a pointer to its end
wcrtomb (3)          - convert a wide character to a multibyte sequence
wcscasecmp (3)       - compare two wide-character strings, ignoring case
wcscat (3)           - concatenate two wide-character strings
wcschr (3)           - search a wide character in a wide-character string
wcscmp (3)           - compare two wide-character strings
wcscpy (3)           - copy a wide character string
wcscspn (3)          - search a wide-character string for any of a set of wide characters
wcsdup (3)           - duplicate a wide-character string
wcslen (3)           - determine the length of a wide-character string
wcsncasecmp (3)      - compare two fixed-size wide-character strings, ignoring case
wcsncat (3)          - concatenate two wide-character strings
wcsncmp (3)          - compare two fixed-size wide-character strings
wcsncpy (3)          - copy a fixed-size string of wide characters
wcsnlen (3)          - determine the length of a fixed-size wide-character string
wcsnrtombs (3)       - convert a wide character string to a multibyte string
wcspbrk (3)          - search a wide-character string for any of a set of wide characters
wcsrchr (3)          - search a wide character in a wide-character string
wcsrtombs (3)        - convert a wide character string to a multibyte string
wcsspn (3)           - advance in a wide-character string, skipping any of a set of wide characters
wcsstr (3)           - locate a substring in a wide-character string
wcstok (3)           - split wide-character string into tokens
wcstombs (3)         - convert a wide character string to a multibyte string
wcswidth (3)         - determine columns needed for a fixed-size wide character string
wctob (3)            - try to represent a wide character as a single byte
wctomb (3)           - convert a wide character to a multibyte sequence
wctrans (3)          - wide character translation mapping
wctype (3)           - wide character classification
wcwidth (3)          - determine columns needed for a wide character
wmemchr (3)          - search a wide character in a wide-character array
wmemcmp (3)          - compare two arrays of wide-characters
wmemcpy (3)          - copy an array of wide-characters
wmemmove (3)         - copy an array of wide-characters
wmemset (3)          - fill an array of wide-characters with a constant wide character
wprintf, fwprintf, swprintf, vwprintf, vfwprintf, vswprintf (3) - formatted wide character output conversion
write (2)            - write to a file descriptor
x25, PF_X25 (7)      - ITU-T X.25 / ISO-8208 protocol interface.
xdr (3)              - library routines for external data representation
zdump (8)            - time zone dumper
zic (8)              - time zone compiler
