FILE 관련 API

<FILE structure>

typedef struct  {
       int             level;      /* fill/empty level of buffer */
       unsigned        flags;      /* File status flags          */
       char            fd;         /* File descriptor            */
       unsigned char   hold;       /* Ungetc char if no buffer   */
       int             bsize;      /* Buffer size                */
  unsigned char   *buffer;    /* Data transfer buffer       */
  unsigned char   *curp;      /* Current active pointer     */
       unsigned        istemp;     /* Temporary file indicator   */
       short           token;      /* Used for validity checking */
}       FILE;   


파일 관련

http://blog.paran.com/isdev8587/4876504

va_list
http://forum.falinux.com/zbxe/?document_srl=406096&mid=gcc
http://legendfinger.com/132

fopen, fdopen, freopen
http://man.kldp.net/wiki/ManPage/fopen.3
http://www.cworldlab.com/CandCplus/clibrary/freopen.htm
http://www.cworldlab.com/CandCplus/clibrary/fdopen.htm

fseek, rewind
http://beej.us/guide/bgc/output/html/multipage/fseek.html
http://www.google.co.kr/url?sa=t&source=web&cd=5&ved=0CEEQFjAE&url=http%3A%2F%2Fwww.eskimo.com%2F~scs%2Fcclass%2Fint%2Fsx2i.html&ei=eBq9TOWPB4rWvQPxq_BB&usg=AFQjCNHHDhCTfXu6KGrc7NKjaG1MuokIBQ

fileno
http://linux.die.net/man/3/fileno

fgetpos/fsetpos
http://itguru.tistory.com/70

clearerr
http://www.opengroup.org/onlinepubs/009695399/functions/clearerr.html

setbuf, setvbuf
http://www.cworldlab.com/CandCplus/clibrary/setbuf.htm
http://www.cworldlab.com/CandCplus/clibrary/setvbuf.htm

fflush
http://www.joinc.co.kr/modules/moniwiki/wiki.php/man/3/fflush

unlink
http://www.joinc.co.kr/modules/moniwiki/wiki.php/man/2/unlink

unix system call
http://www.softpanorama.org/Internals/unix_system_calls.shtml

--System calls for low level file I/O
creat(name, permissions)
open(name, mode)
close(fd)
unlink(fd)
read(fd, buffer, n_to_read)
write(fd, buffer, n_to_write)
lseek(fd, offest, whence)
--System Calls for process control
fork()
wait()
execl(), execlp(), execv(), execvp()
exit()
signal(sig, handler)
kill(sig, pid)
--System Calls for IPC
pipe(fildes)
dup(fd)


파일 사용 util
http://ttongfly.net/zbxe/?document_srl=45219&mid=linuxprogramming