10 More Discussions You Might Find Interesting
1. Shell Programming and Scripting
I have created a fifo named pipe in solaris, which writes the content of a file, line by line, into pipe as below:
$ mkfifo namepipe
$ cat books.txt
"how to write unix code"
"how to write oracle code"
$ cat books.txt >> namepipe &
I have a readpipe.sh script which reads the named... (2 Replies)
Discussion started by: naveen mani
2 Replies
2. Shell Programming and Scripting
Hi,
I want to use a Named pipe to get input from a growing file for further processing. When I prototype this scenario using a while loop, the data is not written to the named pipe.
This the script I use to get data into the Named pipe:
#!/bin/ksh
mkfifo pipe
while (( n <= 10 ))
do
echo... (2 Replies)
Discussion started by: sudvishw
2 Replies
3. Shell Programming and Scripting
I'm trying to read a fifo using awk and comming across some problems. I'm writing to the fifo from multiple processes invoked by GNU Parallel:
mkfifo my_fifo
awk '{ a = a + $2 } END { for (i in a) print i, a }' my_fifo | sort -nk1 > sorted_output
grep -v '^@' massive_file | parallel... (3 Replies)
Discussion started by: nathanhaigh
3 Replies
4. Programming
Hi guys.
1. how much is the size of pipe?(i mean the buffer size)
2. is this size different in various UNIX derivations?
3. what happens if we write to a full pipe? does it block until get some free space(the other side receive data) or returns an error?
3. FIFO s are physical files on the... (2 Replies)
Discussion started by: majid.merkava
2 Replies
5. Homework & Coursework Questions
Use and complete the template provided. The entire template must be completed. If you don't, your post may be deleted!
1. The problem statement, all variables and given/known data:
Create a chat program using two FIFOs one for writing and the other for reading. The problem is something... (1 Reply)
Discussion started by: Ebodee
1 Replies
6. UNIX for Advanced & Expert Users
Hi
This is a exercise question from Unix network programming vol2.
Why the SIGPIPE signal is generated only for writers when readers disappear.
why not it is generated for readers when writer disappears.
I guess, if the writer didn't get any response like the reader gets EOF,
it will... (4 Replies)
Discussion started by: kumaran_5555
4 Replies
7. Shell Programming and Scripting
Hello,
Would this be an acceptable way of creating a non-blocking pipe.
Basically I want to create kind of a server client arch.
This code would be in the server, and I don't want to have to wait for
clients to read before moving on to the next client. One problem I
can see is if... (4 Replies)
Discussion started by: cdlaforc
4 Replies
8. UNIX for Dummies Questions & Answers
Can someone explain to me the working of fifo() system call using simple C programs so that I can implement them in the UNIX environement? (1 Reply)
Discussion started by: lvkchaitanya
1 Replies
9. UNIX for Advanced & Expert Users
Hello!
How I can increase (or decrease) the predefined pipe buffer size?
Thanks! (1 Reply)
Discussion started by: Jus
1 Replies
10. Programming
Could someone Help me with this code please?
#include <stdio.h>
#include <unistd.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <string.h>
#include <fcntl.h>
#define SIZE_B 256 /*buffer's size */
#define NUM_ARG 20 /* max number of args for any command */
int... (4 Replies)
Discussion started by: M3xican
4 Replies