06-12-2003
I/O buffers
By defalt stdout is "line - buffered".
It mean that after printf("...
\n") buffer was flushed if output to stdout.
Certainly the file I/O buffers isn't "line-buffered", and before fork(), buffers was not flushed. So its filled buffers was copied.
What happen if we write " for(int i = 0 ; i < 3; ++i) " ?
You can manage I/O buffering by using "setvbuf" function.
Last edited by serge; 06-12-2003 at 07:57 AM..
10 More Discussions You Might Find Interesting
1. UNIX for Dummies Questions & Answers
I 'm using RH 7.2 Genome in the Network Configuration I change therer are two places one for static hostname for my machine and in DNS hostname I don't know what happen when restarting my PC when connecting using dialer I can't browse the Internet also I can't use sendmail .......Server timeout... (2 Replies)
Discussion started by: atiato
2 Replies
2. UNIX for Dummies Questions & Answers
Hi,
Could someone please tell me what would happen if the following were entered into the command line:
rm -i /books/*.*
rm /books/*
Many thanks! (3 Replies)
Discussion started by: crispy
3 Replies
3. UNIX for Dummies Questions & Answers
Is it possible to set a task to happen in the future? Say I want to log-off only after 10 hours of being logged on with out doing any activity in between? (2 Replies)
Discussion started by: Slick
2 Replies
4. Programming
Dear
i do not understand that function used for clear screen (given below)
cls
{
union REGS i,o;
i.h.ah=6;
i.h.al=0;
i.h.ch=0;
i.h.cl=0;
i.h.dh=24;
i.h.dl=79;
i.h.bh=7;
int86(16,&i,&o);
}
In Above function Registers are used(i think) but why and internally what the do for clearing... (3 Replies)
Discussion started by: brain_full
3 Replies
5. UNIX for Advanced & Expert Users
I have an unix id (AIX system) which is used to run a couple of processes. They also write some log files into a file system (that is not in the home directory of the user id, but in different location).
One bad day, the id was deleted accidentally. But the home directory, files and everything... (1 Reply)
Discussion started by: cmgreat
1 Replies
6. Shell Programming and Scripting
how to extract files one by one from a directory and let some processing be done on the file
I have a directory by name INTRN which has files like
INTR.0003080248636814
INTR.0003080248636816
INTR.0003080248636818
.
.
.
.
and so on
and in a script... (5 Replies)
Discussion started by: saniya
5 Replies
7. UNIX for Dummies Questions & Answers
hi frndz
I wanna knw exatly what happen when we create new user...
which directories are created ??
which files are modified ??
thanx.... (2 Replies)
Discussion started by: luckypower
2 Replies
8. Programming
what would happen if a process wrote to its own stdin?
#include<unistd.h>
#include<fcntl.h>
int main()
{
if((write(STDIN_FILENO,"arrgh!",6))==-1)
{
perror("error writing to file");
}
}
output:
$ gcc temp.c
$ ./a.out
arrgh!$ (9 Replies)
Discussion started by: c_d
9 Replies
9. AIX
How does ITIL process is implemened in AIX? (6 Replies)
Discussion started by: AIXlearner
6 Replies
10. UNIX for Dummies Questions & Answers
Hello,
when im downloading an webpage from command line (CLI) by curl or wget the target website is loaded like i load it from browser? meaning target server connect to database and render data from mysql? Or only static content is downloaded? (2 Replies)
Discussion started by: postcd
2 Replies
flush(3tcl) Tcl Built-In Commands flush(3tcl)
__________________________________________________________________________________________________________________________________________________
NAME
flush - Flush buffered output for a channel
SYNOPSIS
flush channelId
_________________________________________________________________
DESCRIPTION
Flushes any output that has been buffered for channelId.
ChannelId must be an identifier for an open channel such as a Tcl standard channel (stdout or stderr), the return value from an invocation
of open or socket, or the result of a channel creation command provided by a Tcl extension. The channel must have been opened for writing.
If the channel is in blocking mode the command does not return until all the buffered output has been flushed to the channel. If the chan-
nel is in nonblocking mode, the command may return before all buffered output has been flushed; the remainder will be flushed in the back-
ground as fast as the underlying file or device is able to absorb it.
EXAMPLE
Prompt for the user to type some information in on the console:
puts -nonewline "Please type your name: "
flush stdout
gets stdin name
puts "Hello there, $name!"
SEE ALSO
file(3tcl), open(3tcl), socket(3tcl), Tcl_StandardChannels(3tcl)
KEYWORDS
blocking, buffer, channel, flush, nonblocking, output
Tcl 7.5 flush(3tcl)