plan9 man page for dup

Query: dup

OS: plan9

Section: 2

Format: Original Unix Latex Style Formatted with HTML and a Horizontal Scroll Bar

DUP(2)								System Calls Manual							    DUP(2)

NAME
dup - duplicate an open file descriptor
SYNOPSIS
#include <u.h> #include <libc.h> int dup(int oldfd, int newfd)
DESCRIPTION
Given a file descriptor, oldfd, referring to an open file, dup returns a new file descriptor referring to the same file. If newfd is in the range of legal file descriptors dup will use that for the new file descriptor (closing any old file associated with newfd); if newfd is -1 the system chooses the lowest available file descriptor.
SOURCE
/sys/src/libc/9syscall
SEE ALSO
intro(2), dup(3)
DIAGNOSTICS
Sets errstr. DUP(2)
Related Man Pages
dup(2) - linux
dup(2) - debian
dup3(2) - centos
dup3(2) - x11r4
dup3(2) - xfree86
Similar Topics in the Unix Linux Community
concatenate all duplicate line in a file.
Request to check:remove duplicates only in first column
Find and remove duplicate record and print list
BASH Execution Delay / Speedup
Duplication | awk | result