section 3p · Library functions 📚

R (continued)

• readdir(3p)read a directory✨
• readlink(3p)read the contents of a symbolic link✨
• readv(3p)read a vector✨
• realloc(3p)memory reallocator✨
• realpath(3p)resolve a pathname✨
• recv(3p)receive a message from a connected socket✨
• recvfrom(3p)receive a message from a socket✨
• recvmsg(3p)receive a message from a socket✨
• regcomp(3p)regular expression matching✨
• remainder(3p)remainder function✨
• remove(3p)remove a file✨
• remque(3p)remove an element from a queue✨
• remquo(3p)remainder functions✨
• rename(3p)rename file✨
• rewind(3p)reset the file position indicator in a stream✨
• rewinddir(3p)reset the position of a directory stream to the beginning of a directory✨
• rint(3p)round-to-nearest integral value✨
• rmdir(3p)remove a directory✨
• round(3p)round to the nearest integer value in a floating-point format✨

S

• scalbln(3p)compute exponent using FLT_RADIX✨
• scandir(3p)scan a directory✨
• scanf(3p)convert formatted input✨
• sched_get_priority_max(3p)get priority limits (REALTIME)✨
• sched_getparam(3p)get scheduling parameters (REALTIME)✨
• sched_getscheduler(3p)get scheduling policy (REALTIME)✨
• sched_rr_get_interval(3p)get execution time limits (REALTIME)✨
• sched_setparam(3p)set scheduling parameters (REALTIME)✨
• sched_setscheduler(3p)set scheduling policy and parameters (REALTIME)✨
• sched_yield(3p)yield the processor✨
• seed48(3p)seed a uniformly distributed pseudo-random non-negative long integer generator✨
• seekdir(3p)set the position of a directory stream✨
• select(3p)synchronous I/O multiplexing✨
• sem_close(3p)close a named semaphore✨
• sem_destroy(3p)destroy an unnamed semaphore✨
• sem_getvalue(3p)get the value of a semaphore✨
• sem_init(3p)initialize an unnamed semaphore✨
• sem_open(3p)initialize and open a named semaphore✨
• sem_post(3p)unlock a semaphore✨
• sem_timedwait(3p)lock a semaphore✨
• sem_trywait(3p)lock a semaphore✨
• sem_unlink(3p)remove a named semaphore✨
• sem_wait(3p)lock a semaphore✨
• semctl(3p)XSI semaphore control operations✨
• semget(3p)get set of XSI semaphores✨
• semop(3p)XSI semaphore operations✨
• send(3p)send a message on a socket✨
• sendmsg(3p)send a message on a socket using a message structure✨
• sendto(3p)send a message on a socket✨
• setbuf(3p)assign buffering to a stream✨
• setegid(3p)set the effective group ID✨
• setenv(3p)add or change environment variable✨
• seteuid(3p)set effective user ID✨
• setgid(3p)set-group-ID✨
• setgrent(3p)reset the group database to the first entry✨
• sethostent(3p)network host database functions✨
• setitimer(3p)set the value of an interval timer✨
• setjmp(3p)set jump point for a non-local goto✨
• setkey(3p)set encoding key (CRYPT)✨
• setlocale(3p)set program locale✨
• setlogmask(3p)set the log priority mask✨
• setnetent(3p)network database function✨
• setpgid(3p)set process group ID for job control✨
• setpgrp(3p)set the process group ID✨
• setpriority(3p)set the nice value✨
• setprotoent(3p)network protocol database functions✨
• setpwent(3p)user database function✨
• setregid(3p)set real and effective group IDs✨
• setreuid(3p)set real and effective user IDs✨
• setrlimit(3p)control maximum resource consumption✨
• setservent(3p)network services database functions✨
• setsid(3p)create session and set process group ID✨
• setsockopt(3p)set the socket options✨
• setstate(3p)switch pseudo-random number generator state arrays✨
• setuid(3p)set user ID✨
• setutxent(3p)reset the user accounting database to the first entry✨
• setvbuf(3p)assign buffering to a stream✨
• shm_open(3p)open a shared memory object (REALTIME)✨
• shm_unlink(3p)remove a shared memory object (REALTIME)✨
• shmat(3p)XSI shared memory attach operation✨
• shmctl(3p)XSI shared memory control operations✨
• shmdt(3p)XSI shared memory detach operation✨
• shmget(3p)get an XSI shared memory segment✨
• shutdown(3p)shut down socket send and receive operations✨
• sigaction(3p)examine and change a signal action✨
• sigaddset(3p)add a signal to a signal set✨
• sigaltstack(3p)set and get signal alternate stack context✨
• sigdelset(3p)delete a signal from a signal set✨
• sigemptyset(3p)initialize and empty a signal set✨
• sigfillset(3p)initialize and fill a signal set✨
• sighold(3p)signal management✨
• siginterrupt(3p)allow signals to interrupt functions✨
• sigismember(3p)test for a signal in a signal set✨
• siglongjmp(3p)non-local goto with signal handling✨
• signal(3p)signal management✨
• signbit(3p)test sign✨
• signgam(3p)log gamma function✨
• sigpause(3p)remove a signal from the signal mask and suspend the thread✨
• sigpending(3p)examine pending signals✨
• sigprocmask(3p)examine and change blocked signals✨
• sigqueue(3p)queue a signal to a process✨
• sigrelse(3p)signal management✨
• sigsetjmp(3p)set jump point for a non-local goto✨
• sigsuspend(3p)wait for a signal✨
• sigtimedwait(3p)wait for queued signals✨
• sigwait(3p)wait for queued signals✨
• sigwaitinfo(3p)wait for queued signals✨
• sin(3p)sine function✨
• sinh(3p)hyperbolic sine functions✨
• sinl(3p)sine function✨
• sleep(3p)suspend execution for an interval of time✨
• snprintf(3p)print formatted output✨
• sockatmark(3p)determine whether a socket is at the out-of-band mark✨
• socket(3p)create an endpoint for communication✨
• socketpair(3p)create a pair of connected sockets✨
• sprintf(3p)print formatted output✨
• sqrt(3p)square root function✨
• srand(3p)pseudo-random number generator✨
• srand48(3p)seed the uniformly distributed double-precision pseudo-random number generator✨
• srandom(3p)seed pseudo-random number generator✨
• sscanf(3p)convert formatted input✨
• stat(3p)get file status✨
• statvfs(3p)get file system information✨
• stdin(3p)standard I/O streams✨
• stpcpy(3p)copy a string and return a pointer to the end of the result✨
• stpncpy(3p)copy fixed length string, returning a pointer to the array end✨
• strcasecmp(3p)case-insensitive string comparisons✨
• strcat(3p)concatenate two strings✨
• strchr(3p)string scanning operation✨
• strcmp(3p)compare two strings✨
• strcoll(3p)string comparison using collating information✨
• strcpy(3p)copy a string and return a pointer to the end of the result✨
• strcspn(3p)get the length of a complementary substring✨
• strdup(3p)duplicate a specific number of bytes from a string✨
• strerror(3p)get error message string✨
• strfmon(3p)convert monetary value to a string✨
• strftime(3p)convert date and time to a string✨
• strlen(3p)get length of fixed size string✨
• strncasecmp(3p)case-insensitive string comparisons✨
• strncat(3p)concatenate a string with part of another✨
• strncmp(3p)compare part of two strings✨
• strncpy(3p)copy fixed length string, returning a pointer to the array end✨
• strndup(3p)duplicate a specific number of bytes from a string✨
• strnlen(3p)get length of fixed size string✨
• strpbrk(3p)scan a string for a byte✨
• strptime(3p)date and time conversion✨
• strrchr(3p)string scanning operation✨
• strsignal(3p)get name of signal✨
• strspn(3p)get length of a substring✨
• strstr(3p)find a substring✨
• strtod(3p)convert a string to a double-precision number✨
• strtoimax(3p)convert string to integer type✨
• strtok(3p)split string into tokens✨
• strtol(3p)convert a string to a long integer✨
• strtold(3p)convert a string to a double-precision number✨
• strtoll(3p)convert a string to a long integer✨
• strtoul(3p)convert a string to an unsigned long✨
• strtoumax(3p)convert a string to an integer type✨
• strxfrm(3p)string transformation✨
• swab(3p)swap bytes✨
• swprintf(3p)print formatted wide-character output✨
• swscanf(3p)convert formatted wide-character input✨
• symlink(3p)make a symbolic link✨
• sync(3p)schedule file system updates✨
• sysconf(3p)get configurable system variables✨
• syslog(3p)log a message✨
• system(3p)issue a command✨

T

• tan(3p)tangent function✨
• tanh(3p)hyperbolic tangent functions✨
• tanl(3p)tangent function✨
• tcdrain(3p)wait for transmission of output✨
• tcflow(3p)suspend or restart the transmission or reception of data✨
• tcflush(3p)flush non-transmitted output data, non-read input data, or both✨
• tcgetattr(3p)get the parameters associated with the terminal✨
• tcgetpgrp(3p)get the foreground process group ID✨
• tcgetsid(3p)get the process group ID for the session leader for the controlling terminal✨
• tcsendbreak(3p)send a break for a specific duration✨
• tcsetattr(3p)set the parameters associated with the terminal✨
• tcsetpgrp(3p)set the foreground process group ID✨
• tdelete(3p)manage a binary search tree✨
• telldir(3p)current location of a named directory stream✨
• tempnam(3p)create a name for a temporary file✨
• tfind(3p)search binary search tree✨
• tgamma(3p)compute gamma() function✨
• time(3p)get time✨
• timer_create(3p)create a per-process timer✨
• timer_delete(3p)delete a per-process timer✨
• timer_getoverrun(3p)per-process timers✨
• times(3p)get process and waited-for child process times✨
• timezone(3p)difference from UTC and local standard time✨
• tmpfile(3p)create a temporary file✨
• tmpnam(3p)create a name for a temporary file✨
• toascii(3p)translate an integer to a 7-bit ASCII character✨
• tolower(3p)transliterate uppercase characters to lowercase✨
• toupper(3p)transliterate lowercase characters to uppercase✨
• towctrans(3p)wide-character transliteration✨
• towlower(3p)transliterate uppercase wide-character code to lowercase✨
• towupper(3p)transliterate lowercase wide-character code to uppercase✨
• trunc(3p)round to truncated integer value✨
• truncate(3p)truncate a file to a specified length✨
• truncf(3p)round to truncated integer value✨