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S

• _setjmp(), _longjmp - non-local goto
• sact - print current SCCS file-editing activity (DEVELOPMENT)
• scalbln(), scalblnf, scalblnl, scalbn, scalbnf, scalbnl - compute exponent using FLT_RADIX
• scalblnf(), scalbln, scalblnl, scalbn, scalbnf, scalbnl - compute exponent using FLT_RADIX
• scalblnl(), scalbln, scalblnf, scalbn, scalbnf, scalbnl - compute exponent using FLT_RADIX
• scalbn(), scalbln, scalblnf, scalblnl, scalbnf, scalbnl - compute exponent using FLT_RADIX
• scalbnf(), scalbln, scalblnf, scalblnl, scalbn, scalbnl - compute exponent using FLT_RADIX
• scalbnl(), scalbln, scalblnf, scalblnl, scalbn, scalbnf - compute exponent using FLT_RADIX
• scandir(), alphasort - scan a directory
• scanf(), fscanf, sscanf - convert formatted input
• sccs - front end for the SCCS subsystem (DEVELOPMENT)
• sched.h - execution scheduling
• sched_getparam() - get scheduling parameters (REALTIME)
• sched_getscheduler() - get scheduling policy (REALTIME)
• sched_get_priority_max(), sched_get_priority_min - get priority limits (REALTIME)
• sched_get_priority_min(), sched_get_priority_max - get priority limits (REALTIME)
• sched_rr_get_interval() - get execution time limits (REALTIME)
• sched_setparam() - set scheduling parameters (REALTIME)
• sched_setscheduler() - set scheduling policy and parameters (REALTIME)
• sched_yield() - yield the processor
• search.h - search tables
• sed - stream editor
• seed48(), drand48, erand48, jrand48, lcong48, lrand48, mrand48, nrand48, srand48 - generate uniformly distributed pseudo-random numbers
• seekdir() - set the position of a directory stream
• select(), pselect - synchronous I/O multiplexing
• semaphore.h - semaphores
• semctl() - XSI semaphore control operations
• semget() - get set of XSI semaphores
• semop() - XSI semaphore operations
• sem_close() - close a named semaphore
• sem_destroy() - destroy an unnamed semaphore
• sem_getvalue() - get the value of a semaphore
• sem_init() - initialize an unnamed semaphore
• sem_open() - initialize and open a named semaphore
• sem_post() - unlock a semaphore
• sem_timedwait() - lock a semaphore
• sem_trywait(), sem_wait - lock a semaphore
• sem_unlink() - remove a named semaphore
• sem_wait(), sem_trywait - lock a semaphore
• send() - send a message on a socket
• sendmsg() - send a message on a socket using a message structure
• sendto() - send a message on a socket
• set - set or unset options and positional parameters
• setbuf() - assign buffering to a stream
• setegid() - set the effective group ID
• setenv() - add or change environment variable
• seteuid() - set effective user ID
• setgid() - set-group-ID
• setgrent(), endgrent, getgrent - group database entry functions
• sethostent(), endhostent, gethostent - network host database functions
• setitimer(), getitimer - get and set value of interval timer
• setjmp() - set jump point for a non-local goto
• setjmp.h - stack environment declarations
• setkey() - set encoding key (CRYPT)
• setlocale() - set program locale
• setlogmask(), closelog, openlog, syslog - control system log
• setnetent(), endnetent, getnetbyaddr, getnetbyname, getnetent - network database functions
• setpgid() - set process group ID for job control
• setpgrp() - set the process group ID
• setpriority(), getpriority - get and set the nice value
• setprotoent(), endprotoent, getprotobyname, getprotobynumber, getprotoent - network protocol database functions
• setpwent(), endpwent, getpwent - user database functions
• setregid() - set real and effective group IDs
• setreuid() - set real and effective user IDs
• setrlimit(), getrlimit - control maximum resource consumption
• setservent(), endservent, getservbyname, getservbyport, getservent - network services database functions
• setsid() - create session and set process group ID
• setsockopt() - set the socket options
• setstate(), initstate, random, srandom - pseudo-random number functions
• setuid() - set user ID
• setutxent(), endutxent, getutxent, getutxid, getutxline, pututxline - user accounting database functions
• setvbuf() - assign buffering to a stream
• sh - shell, the standard command language interpreter
• shift - shift positional parameters
• shmat() - XSI shared memory attach operation
• shmctl() - XSI shared memory control operations
• shmdt() - XSI shared memory detach operation
• shmget() - get an XSI shared memory segment
• shm_open() - open a shared memory object (REALTIME)
• shm_unlink() - remove a shared memory object (REALTIME)
• shutdown() - shut down socket send and receive operations
• sigaction() - examine and change a signal action
• sigaddset() - add a signal to a signal set
• sigaltstack() - set and get signal alternate stack context
• sigdelset() - delete a signal from a signal set
• sigemptyset() - initialize and empty a signal set
• sigfillset() - initialize and fill a signal set
• sighold(), sigignore, sigpause, sigrelse, sigset - signal management
• sigignore(), sighold, sigpause, sigrelse, sigset - signal management
• siginterrupt() - allow signals to interrupt functions
• sigismember() - test for a signal in a signal set
• siglongjmp() - non-local goto with signal handling
• signal() - signal management
• signal.h - signals
• signbit() - test sign
• signgam, lgamma, lgammaf, lgammal - log gamma function
• sigpause(), sighold, sigignore, sigrelse, sigset - signal management
• sigpending() - examine pending signals
• sigprocmask(), pthread_sigmask - examine and change blocked signals
• sigqueue() - queue a signal to a process
• sigrelse(), sighold, sigignore, sigpause, sigset - signal management
• sigset(), sighold, sigignore, sigpause, sigrelse - signal management
• sigsetjmp() - set jump point for a non-local goto
• sigsuspend() - wait for a signal
• sigtimedwait(), sigwaitinfo - wait for queued signals
• sigwait() - wait for queued signals
• sigwaitinfo(), sigtimedwait - wait for queued signals
• sin(), sinf, sinl - sine function
• sinf(), sin, sinl - sine function
• sinh(), sinhf, sinhl - hyperbolic sine functions
• sinhf(), sinh, sinhl - hyperbolic sine functions
• sinhl(), sinh, sinhf - hyperbolic sine functions
• sinl(), sin, sinf - sine function
• sleep - suspend execution for an interval
• sleep() - suspend execution for an interval of time
• snprintf(), dprintf, fprintf, printf, sprintf - print formatted output
• sockatmark() - determine whether a socket is at the out-of-band mark
• socket() - create an endpoint for communication
• socketpair() - create a pair of connected sockets
• sort - sort, merge, or sequence check text files
• spawn.h - spawn (ADVANCED REALTIME)
• split - split files into pieces
• sprintf(), dprintf, fprintf, printf, snprintf - print formatted output
• sqrt(), sqrtf, sqrtl - square root function
• sqrtf(), sqrt, sqrtl - square root function
• sqrtl(), sqrt, sqrtf - square root function
• srand(), rand, rand_r - pseudo-random number generator
• srand48(), drand48, erand48, jrand48, lcong48, lrand48, mrand48, nrand48, seed48 - generate uniformly distributed pseudo-random numbers
• srandom(), initstate, random, setstate - pseudo-random number functions
• sscanf(), fscanf, scanf - convert formatted input
• stat(), fstatat, lstat - get file status
• statvfs(), fstatvfs - get file system information
• stdarg.h - handle variable argument list
• stdbool.h - boolean type and values
• stddef.h - standard type definitions
• stderr, stdin, stdout - standard I/O streams
• stdin, stderr, stdout - standard I/O streams
• stdint.h - integer types
• stdio.h - standard buffered input/output
• stdlib.h - standard library definitions
• stdout, stderr, stdin - standard I/O streams
• stpcpy(), strcpy - copy a string and return a pointer to the end of the result
• stpncpy(), strncpy - copy fixed length string, returning a pointer to the array end
• strcasecmp(), strcasecmp_l, strncasecmp, strncasecmp_l - case-insensitive string comparisons
• strcasecmp_l(), strcasecmp, strncasecmp, strncasecmp_l - case-insensitive string comparisons
• strcat() - concatenate two strings
• strchr() - string scanning operation
• strcmp() - compare two strings
• strcoll(), strcoll_l - string comparison using collating information
• strcoll_l(), strcoll - string comparison using collating information
• strcpy(), stpcpy - copy a string and return a pointer to the end of the result
• strcspn() - get the length of a complementary substring
• strdup(), strndup - duplicate a specific number of bytes from a string
• strerror(), strerror_l, strerror_r - get error message string
• strerror_l(), strerror, strerror_r - get error message string
• strerror_r(), strerror, strerror_l - get error message string
• strfmon(), strfmon_l - convert monetary value to a string
• strfmon_l(), strfmon - convert monetary value to a string
• strftime(), strftime_l - convert date and time to a string
• strftime_l(), strftime - convert date and time to a string
• string.h - string operations
• strings - find printable strings in files
• strings.h - string operations
• strip - remove unnecessary information from strippable files (DEVELOPMENT)
• strlen(), strnlen - get length of fixed size string
• strncasecmp(), strcasecmp, strcasecmp_l, strncasecmp_l - case-insensitive string comparisons
• strncasecmp_l(), strcasecmp, strcasecmp_l, strncasecmp - case-insensitive string comparisons
• strncat() - concatenate a string with part of another
• strncmp() - compare part of two strings
• strncpy(), stpncpy - copy fixed length string, returning a pointer to the array end
• strndup(), strdup - duplicate a specific number of bytes from a string
• strnlen(), strlen - get length of fixed size string
• stropts.h - STREAMS interface (STREAMS)
• strpbrk() - scan a string for a byte
• strptime() - date and time conversion
• strrchr() - string scanning operation
• strsignal() - get name of signal
• strspn() - get length of a substring
• strstr() - find a substring
• strtod(), strtof, strtold - convert a string to a double-precision number
• strtof(), strtod, strtold - convert a string to a double-precision number
• strtoimax(), strtoumax - convert string to integer type
• strtok(), strtok_r - split string into tokens
• strtok_r(), strtok - split string into tokens
• strtol(), strtoll - convert a string to a long integer
• strtold(), strtod, strtof - convert a string to a double-precision number
• strtoll(), strtol - convert a string to a long integer
• strtoul(), strtoull - convert a string to an unsigned long
• strtoull(), strtoul - convert a string to an unsigned long
• strtoumax(), strtoimax - convert string to integer type
• strxfrm(), strxfrm_l - string transformation
• strxfrm_l(), strxfrm - string transformation
• stty - set the options for a terminal
• swab() - swap bytes
• swprintf(), fwprintf, wprintf - print formatted wide-character output
• swscanf(), fwscanf, wscanf - convert formatted wide-character input
• symlink(), symlinkat - make a symbolic link relative to directory file descriptor
• symlinkat(), symlink - make a symbolic link relative to directory file descriptor
• sync() - schedule file system updates
• sys/ipc.h - XSI interprocess communication access structure
• sys/mman.h - memory management declarations
• sys/msg.h - XSI message queue structures
• sys/resource.h - definitions for XSI resource operations
• sys/select.h - select types
• sys/sem.h - XSI semaphore facility
• sys/shm.h - XSI shared memory facility
• sys/socket.h - main sockets header
• sys/stat.h - data returned by the stat() function
• sys/statvfs.h - VFS File System information structure
• sys/time.h - time types
• sys/times.h - file access and modification times structure
• sys/types.h - data types
• sys/uio.h - definitions for vector I/O operations
• sys/un.h - definitions for UNIX domain sockets
• sys/utsname.h - system name structure
• sys/wait.h - declarations for waiting
• sysconf() - get configurable system variables
• syslog(), closelog, openlog, setlogmask - control system log
• syslog.h - definitions for system error logging
• system() - issue a command

• Saved Resource Limits
• Saved Set-Group-ID
• Saved Set-User-ID
• Scheduling Allocation Domain
• Scheduling Contention Scope
• Scheduling Policy
• Scheduling Policy (General Concept)
• Scheduling
• Screen
• Scroll
• Seconds Since the Epoch
• Semaphore
• Semaphore (General Concept)
• Session Leader
• Session Lifetime
• Session
• Shared Memory Object
• Shell Script
• Shell, the
• Shell
• Signal Stack
• Signal
• Single-Quote Character
• Slash Character (<slash>)
• Socket Address
• Socket
• Soft Limit
• Source Code
• Space Character (<space>)
• Spawn
• Special Built-In
• Special Parameter
• Spin Lock
• Sporadic Server
• Standard Error
• Standard Input
• Standard Output
• Standard Utilities
• STREAM End
• STREAM Head
• Stream
• STREAM
• STREAMS Multiplexor
• String
• Subshell
• Successfully Transferred
• Supplementary Group ID
• Suspended Job
• Symbolic Constant
• Symbolic Link
• Synchronized I/O Completion
• Synchronized I/O Data Integrity Completion
• Synchronized I/O File Integrity Completion
• Synchronized I/O Operation
• Synchronized Input and Output
• Synchronous I/O Operation
• Synchronously-Generated Signal
• System Boot
• System Clock
• System Console
• System Crash
• System Databases
• System Documentation
• System Process
• System Reboot
• System Trace Event
• System-Wide
• System