개요

• 솔라나라에 설명된 어플리케이션에 대해 맨 페이지를 찾아 출력한다.
• MAN 페이지에 대한 설명은 윈디하나의 솔라나라: MAN 페이지을 참고하자.
• svcadm(8)을 검색하려면 섹션에서 8 을 선택하고, 맨 페이지 이름에 svcadm을 입력하고 검색을 누른다.

dup(2)

dup(2)                           System Calls                           dup(2)



NAME
       dup - duplicate an open file descriptor

SYNOPSIS
       #include <unistd.h>

       int dup(int fildes);

DESCRIPTION
       The  dup()  function returns a new file descriptor having the following
       in common with the original open file descriptor fildes:

           o      same open file (or pipe)


           o      same file pointer (that is, both file descriptors share  one
                  file pointer)


           o      same access mode (read, write or read/write).



       The  new  file descriptor is set to remain open across exec() functions
       (see fcntl(2)).


       The file descriptor returned is the lowest one available.


       The dup(fildes) function call is equivalent to:


       fcntl(fildes, F_DUPFD, 0)

RETURN VALUES
       Upon successful completion, a  non-negative  integer  representing  the
       file descriptor is returned. Otherwise, −1 is returned and errno is set
       to indicate the error.

ERRORS
       The dup() function will fail if:

       EBADF      The fildes argument is not a valid open file descriptor.


       EINTR      A signal was caught during the execution of the dup()  func‐
                  tion.


       EMFILE     The process has too many open files (see getrlimit(2)).


       ENOLINK    The  fildes  argument is on a remote machine and the link to
                  that machine is no longer active.


ATTRIBUTES
       See attributes(7) for descriptions of the following attributes:


       tab() box; cw(2.75i) |cw(2.75i) lw(2.75i) |lw(2.75i) ATTRIBUTE  TYPEAT‐
       TRIBUTE  VALUE  _  Interface StabilityCommitted _ MT-LevelAsync-Signal-
       Safe _ StandardSee standards(7).


SEE ALSO
       exec(2), close(2), creat(2), fcntl(2), getrlimit(2), open(2),  pipe(2),
       dup2(3C), lockf(3C), attributes(7), standards(7)



Oracle Solaris 11.4               17 Aug 2018                           dup(2)