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POSIX::_exit POSIX terminate a process
POSIX::abort POSIX generate a fault
POSIX::abs POSIX integer absolute value
POSIX::access POSIX determine accessibility of file
POSIX::acos POSIX trigonometric functions
POSIX::alarm POSIX schedule signal after specified time
POSIX::asctime POSIX convert date and time
POSIX::asin POSIX trigonometric functions
POSIX::assert POSIX program verification
POSIX::atan2 POSIX trigonometric functions
POSIX::atan POSIX trigonometric functions
POSIX::atof POSIX convert string to double-precision number
POSIX::atoi POSIX convert string to integer
POSIX::atol POSIX convert string to integer
POSIX::bsearch POSIX binary search a sorted table
POSIX::calloc POSIX memory allocator
POSIX::ceil POSIX round to integral value in floating-point or integer format
POSIX::chdir POSIX change current working directory
POSIX::chmod POSIX change mode of file
POSIX::chown POSIX change owner and group of a file
POSIX::clearerr POSIX stream status inquiries
POSIX::clock POSIX report CPU time used
POSIX::close POSIX delete a descriptor
POSIX::closedir POSIX directory operations
POSIX::cos POSIX trigonometric functions
POSIX::cosh POSIX hyperbolic functions
POSIX::creat POSIX create a new file
POSIX::ctermid POSIX generate filename for terminal
POSIX::ctime POSIX convert date and time
POSIX::cuserid POSIX get character login name of the user
POSIX::dup2 POSIX duplicate a descriptor
POSIX::dup POSIX duplicate a descriptor
POSIX::errno POSIX system error messages
POSIX::execl POSIX execute a file
POSIX::execle POSIX execute a file
POSIX::execlp POSIX execute a file
POSIX::execv POSIX execute a file
POSIX::execve POSIX execute a file
POSIX::execvp POSIX execute a file
POSIX::exit POSIX terminate a process after performing cleanup
POSIX::exp POSIX exponential, logarithm, power
POSIX::fabs POSIX appendix and related miscellaneous functions for IEEE arithmetic
POSIX::fclose POSIX close or flush a stream
POSIX::fcntl POSIX file control
POSIX::fdopen POSIX open a stream
POSIX::feof POSIX stream status inquiries
POSIX::ferror POSIX stream status inquiries
POSIX::fflush POSIX close or flush a stream
POSIX::fgetc POSIX get character or integer from stream
POSIX::fgets POSIX get a string from a stream
POSIX::fileno POSIX stream status inquiries
POSIX::floor POSIX round to integral value in floating-point or integer format
POSIX::fmod POSIX appendix and related miscellaneous functions for IEEE arithmetic
POSIX::fopen POSIX open a stream
POSIX::fork POSIX create a new process
POSIX::fpathconf POSIX query file system related limits and options
POSIX::fprintf POSIX formatted output conversion
POSIX::fputc POSIX put character or word on a stream
POSIX::fputs POSIX put a string on a stream
POSIX::fread POSIX buffered binary input/output
POSIX::free POSIX memory allocator
POSIX::freopen POSIX open a stream
POSIX::frexp POSIX traditional UNIX functions
POSIX::fscanf POSIX formatted input conversion
POSIX::fseek POSIX reposition a stream
POSIX::fstat POSIX get file status
POSIX::ftell POSIX reposition a stream
POSIX::fwrite POSIX buffered binary input/output
POSIX::getc POSIX get character or integer from stream
POSIX::getchar POSIX get character or integer from stream
POSIX::getcwd POSIX get pathname of current working directory
POSIX::getegid POSIX get group identity
POSIX::getenv POSIX return value for environment name
POSIX::geteuid POSIX get user identity
POSIX::getgid POSIX get group identity
POSIX::getgrgid POSIX get group file entry
POSIX::getgrnam POSIX get group file entry
POSIX::getgroups POSIX get or set supplementary group IDs
POSIX::getlogin POSIX get login name
POSIX::getpgrp POSIX return or set the process group of a process
POSIX::getpid POSIX get process identification
POSIX::getppid POSIX get process identification
POSIX::getpwnam POSIX get password file entry
POSIX::getpwuid POSIX get password file entry
POSIX::gets POSIX get a string from a stream
POSIX::getuid POSIX get user identity
POSIX::gmtime POSIX convert date and time
POSIX::isalnum POSIX character classification and conversion macros and functions
POSIX::isalpha POSIX character classification and conversion macros and functions
POSIX::isatty POSIX find name of a terminal
POSIX::iscntrl POSIX character classification and conversion macros and functions
POSIX::isdigit POSIX character classification and conversion macros and functions
POSIX::isgraph POSIX character classification and conversion macros and functions
POSIX::islower POSIX character classification and conversion macros and functions
POSIX::isprint POSIX character classification and conversion macros and functions
POSIX::ispunct POSIX character classification and conversion macros and functions
POSIX::isspace POSIX character classification and conversion macros and functions
POSIX::isupper POSIX character classification and conversion macros and functions
POSIX::isxdigit POSIX character classification and conversion macros and functions
POSIX::kill POSIX send a signal to a process or a group of processes
POSIX::ldexp POSIX traditional UNIX functions
POSIX::link POSIX make a hard link to a file
POSIX::localeconv POSIX get numeric and monetary formatting conventions
POSIX::localtime POSIX convert date and time
POSIX::log10 POSIX exponential, logarithm, power
POSIX::log POSIX exponential, logarithm, power
POSIX::longjmp POSIX non-local goto
POSIX::lseek POSIX move read/write pointer
POSIX::malloc POSIX memory allocator
POSIX::mblen POSIX multibyte character handling
POSIX::mbstowcs POSIX multibyte character handling
POSIX::mbtowc POSIX multibyte character handling
POSIX::memchr POSIX memory operations
POSIX::memcmp POSIX memory operations
POSIX::memcpy POSIX memory operations
POSIX::memset POSIX memory operations
POSIX::mkdir POSIX make a directory file
POSIX::mkfifo POSIX make a special file
POSIX::modf POSIX traditional UNIX functions
POSIX::nice POSIX change nice value of a process
POSIX::open POSIX open or create a file for reading or writing
POSIX::opendir POSIX directory operations
POSIX::pathconf POSIX query file system related limits and options
POSIX::pause POSIX stop until signal
POSIX::perror POSIX system error messages
POSIX::pipe POSIX create an interprocess communication channel
POSIX::pow POSIX exponential, logarithm, power
POSIX::pow POSIX multiple precision integer arithmetic
POSIX::printf POSIX formatted output conversion
POSIX::putc POSIX put character or word on a stream
POSIX::putchar POSIX put character or word on a stream
POSIX::puts POSIX put a string on a stream
POSIX::qsort POSIX quicker sort
POSIX::rand POSIX simple random number generator
POSIX::read POSIX read input
POSIX::readdir POSIX directory operations
POSIX::realloc POSIX memory allocator
POSIX::rename POSIX change the name of a file
POSIX::rewind POSIX reposition a stream
POSIX::rewinddir POSIX directory operations
POSIX::rmdir POSIX remove a directory file
POSIX::scanf POSIX formatted input conversion
POSIX::setbuf POSIX assign buffering to a stream
POSIX::setgid POSIX set user and group ID
POSIX::setjmp POSIX non-local goto
POSIX::setlocale POSIX set international environment
POSIX::setpgid POSIX set process group ID for job control
POSIX::setsid POSIX create session and set process group ID
POSIX::setuid POSIX set user and group ID
POSIX::setvbuf POSIX assign buffering to a stream
POSIX::sigaction POSIX examine and change signal action
POSIX::siglongjmp POSIX non-local goto
POSIX::sigpending POSIX examine pending signals
POSIX::sigprocmask POSIX examine and change blocked signals
POSIX::sigsetjmp POSIX non-local goto
POSIX::sigsuspend POSIX automatically release blocked signals and wait for interrupt
POSIX::sin POSIX trigonometric functions
POSIX::sinh POSIX hyperbolic functions
POSIX::sleep POSIX suspend execution for interval
POSIX::sprintf POSIX formatted output conversion
POSIX::sqrt POSIX cube root, square root
POSIX::srand POSIX simple random number generator
POSIX::sscanf POSIX formatted input conversion
POSIX::stat POSIX get file status
POSIX::strcat POSIX string operations
POSIX::strchr POSIX string operations
POSIX::strcmp POSIX string operations
POSIX::strcoll POSIX compare or transform strings using collating information
POSIX::strcpy POSIX string operations
POSIX::strcspn POSIX string operations
POSIX::strftime POSIX convert date and time
POSIX::strlen POSIX string operations
POSIX::strncat POSIX string operations
POSIX::strncmp POSIX string operations
POSIX::strncpy POSIX string operations
POSIX::strpbrk POSIX string operations
POSIX::strrchr POSIX string operations
POSIX::strspn POSIX string operations
POSIX::strstr POSIX string operations
POSIX::strtod POSIX convert string to double-precision number
POSIX::strtok POSIX string operations
POSIX::strtol POSIX convert string to integer
POSIX::strxfrm POSIX compare or transform strings using collating information
POSIX::sysconf POSIX query system related limits, values, options
POSIX::system POSIX issue a shell command
POSIX::tan POSIX trigonometric functions
POSIX::tanh POSIX hyperbolic functions
POSIX::tcdrain POSIX get and set terminal attributes, line control, get and set baud rate, get and set terminal foreground process group ID
POSIX::tcflow POSIX get and set terminal attributes, line control, get and set baud rate, get and set terminal foreground process group ID
POSIX::tcflush POSIX get and set terminal attributes, line control, get and set baud rate, get and set terminal foreground process group ID
POSIX::tcgetpgrp POSIX get, set foreground process group ID
POSIX::tcsendbreak POSIX get and set terminal attributes, line control, get and set baud rate, get and set terminal foreground process group ID
POSIX::tcsetpgrp POSIX get, set foreground process group ID
POSIX::tell POSIX move read/write pointer
POSIX::time POSIX get date and time
POSIX::times POSIX get process times
POSIX::tmpfile POSIX create a temporary file
POSIX::tmpnam POSIX create a name for a temporary file
POSIX::tolower POSIX character classification and conversion macros and functions
POSIX::toupper POSIX character classification and conversion macros and functions
POSIX::ttyname POSIX find name of a terminal
POSIX::tzset POSIX convert date and time
POSIX::umask POSIX set file creation mode mask
POSIX::uname POSIX get information about current system
POSIX::ungetc POSIX push character back into input stream
POSIX::unlink POSIX remove directory entry
POSIX::utime POSIX set file times
POSIX::vfprintf POSIX print formatted output of a varargs argument list
POSIX::vprintf POSIX print formatted output of a varargs argument list
POSIX::vsprintf POSIX print formatted output of a varargs argument list
POSIX::wait POSIX wait for process to terminate or stop, examine returned status
POSIX::waitpid POSIX wait for process to terminate or stop, examine returned status
POSIX::wcstombs POSIX multibyte character handling
POSIX::wctomb POSIX multibyte character handling
POSIX::write POSIX write output
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