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. Shell Programming and Scripting

Hi, Can the cd command be invoked using pipes??? My actual question is slightly different. I am trying to run an executable from different folders and the path of these folders are obtained dynamically from the front end. Is there a way in which i can actually run the executable... (2 Replies)

3. UNIX for Dummies Questions & Answers

What is the difference between: cd /tmp tar -cf - *.txt |gzip > tmp_txt.tar.gz and cd /tmp mknod pipe p gzip < pipe > /tmp/tmp_txt1.tar.gz & tar -cf pipe *.txt Apart from the fact that we have to create the pipe file manually, is there any difference in the performance of the two?... (5 Replies)

4. Shell Programming and Scripting

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

5. UNIX for Dummies Questions & Answers

Hi How do I direct the output from ls to for example grep a in C. I am not asking for the whole shell implementation. If I write ls|grep myfile in the shell. How is the output sent from ls to the input grep. whit int pipe(pipe); We create the pipe. I and I guess we use dup2(old... (4 Replies)

6. 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)

7. Programming

problem solved. (1 Reply)

8. Programming

If a code forks 2 childs, what can the values be for the process id's of each of the child? I child pid is supposed to be 0, but what if you fork 2 of them? (5 Replies)

9. 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)

10. Shell Programming and Scripting

I already manage to get the output that i want.. but wat if removing all the pipes and convert it 1 liner with less pipes. My command below can get the ouput that i want. i just want to remove the pipes or less pipes. #cat file1 us-west-2a running i-3397a421... (2 Replies)