1. Filesystems, Disks and Memory

Hello! How I can increase or decrease predefined pipe buffer size? System FreeBSD 4.9 and RedHat Linux 9.0 Thanks! (1 Reply)

2. Programming

Extremely need to understand some aspects of pipes realization. The main question is in which memory are pipes placed? (13 Replies)

3. UNIX for Advanced & Expert Users

A broken pipe means that you are writing onto a pipe that has been closed by the other end. i have unix batch which forks some process and these processes are communicating each other via pipes. but sometimes i got too many broken pipe error. how can i search for the cause of these errors,... (1 Reply)

4. UNIX for Advanced & Expert Users

This is something I've given a lot of thought to and come up with no answer. Say you have a data stream passing from a file, through process A, into process B. Process A only modifies a few bytes of the stream, then prints the rest of the stream unmodified. Is there any way to stream the file... (4 Replies)

5. Shell Programming and Scripting

I have to add pipes for particualr number of records in a file. For eg the file has 10 records and i need to add the "|" for records numbers 7 to 10 at particular positons as shown. I need to add pipes in each of these records at positions 9, 11,,21 as like below. Can some body... (7 Replies)

6. Shell Programming and Scripting

How to have a conversation between 2 processes using named pipes? (5 Replies)

7. UNIX for Dummies Questions & Answers

hi, i am working on a script for oracle export, m using a parameter file... i want to compress the dump file that is generated.. in my script following is the code i have written. i am not able to generata .gz file mknod /tmp/exp_tesd1_pipe p gzip -cNf... (4 Replies)

8. Programming

Hello all, I am trying to learn more about programming Unix pipes in C. I have created a pipe that does od -bc < myfile | head Now, I am trying to create od -bc < myfile | head | wc Here is my code, and I know I might be off, thats why I am here so I can get some clarification. #include... (1 Reply)

9. 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 pipe to show the number of people who are logged into the system right now. Create a pipe to show... (2 Replies)

10. Shell Programming and Scripting

Hey, Well, we're starting scripting next week for my class, and I have my command done, but I don't actually understand what the meaning is, so I was just wondering if someone could "translate" this in to words so that I might be able to do this better... command1 | command2 | command3... (5 Replies)