F

Related links

• fabs(), fabsf()

  Compute the absolute value of a double number

• fcfgopen()

  Open a configuration file

• fchdir()

  Change the working directory

• fchmod()

  Change the permissions for a file

• fchown()

  Change the user ID and group ID of a file

• fclose()

  Close a stream

• fcloseall()

  Close all open stream files

• fcntl()

  Provide control over an open file

• fdatasync()

  Synchronize file data

• fdopen()

  Associate a stream with a file descriptor

• feof()

  Test a stream's end-of-file flag

• ferror()

  Test a stream's error flag

• fflush()

  Flush the buffers for a stream

• ffs()

  Find the first bit set in a bit string

• fgetc()

  Read a character from a stream

• fgetchar()

  Read a character from stdin

• fgetpos()

  Get the current position of a stream

• fgets()

  Read a string of characters from a stream

• fgetspent()

  Get an entry from the shadow password database

• fgetwc()

  Read a wide character from a stream

• fgetws()

  Read a string of wide characters from a stream

• fileno()

  Return the file descriptor for a stream

• flink()

  Assign a pathname to a file descriptor

• flock()

  Apply or remove an advisory lock on an open file

• flockfile()

  Acquire ownership of a file

• floor(), floorf()

  Round down a value to the next integer

• flushall()

  Flush all input/output buffers

• fmod(), fmodf(), fmodl()

  Compute a residue, using floating-point modular arithmetic

• fnmatch()

  Check to see if a file or path name matches a pattern

• fopen(), fopen64()

  Open a file stream

• fork()

  Create a new process

• forkpty()

  Create a new process operating in a pseudo-tty

• fp_exception_mask()

  Get or set the current exception mask

• fp_exception_value()

  Get the value of the current exception registers

• fp_precision()

  Set or get the current precision

• fp_rounding()

  Set or get the current rounding

• fp_setenv()

  Set the floating point environment

• fpathconf()

  Return the value of a configurable limit associated with a file

• fprintf()

  Write output to a stream

• fputc()

  Write a character to a stream

• fputchar()

  Write a character to stdout

• fputs()

  Write a string to an output stream

• fputwc()

  Write a wide character to a stream

• fputws()

  Write a wide-character string to an output stream

• fread()

  Read elements of a given size from a stream

• free()

  Deallocate a block of memory

• freeaddrinfo()

  Free a list of address information structures

• freeifaddrs()

  Free a network interface address

• freopen(), freopen64()

  Reopen a stream

• frexp(), frexpf()

  Break a floating-point number into a normalized fraction and an integral power of 2

• fscanf()

  Scan input from a stream

• fseek(), fseeko(), fseeko64()

  Change the current position of a stream

• fsetpos()

  Set the current position of a file

• fstat(), fstat64()

  Get file information, given a file description

• fstatvfs(), fstatvfs64()

  Get filesystem information, given a file descriptor

• fsync()

  Synchronize the file state

• ftell(), ftello(), ftello64()

  Return the current position of a stream

• ftime()

  Get the current time

• ftruncate(), ftruncate64()

  Truncate a file

• ftrylockfile()

  Acquire ownership of a file, without blocking

• ftw(), ftw64()

  Walk a file tree

• funlockfile()

  Release ownership of a file

• futime()

  Record the modification time for a file

• fwide()

  Set or get the stream orientation

• fwprintf()

  Write wide-character output to a stream

• fwrite()

  Write elements to a file

• fwscanf()

  Scan wide-character input from a stream