1. UNIX for Advanced & Expert Users

Hi All, I am facing a vague issue while trying to make two process talk to each other using named pipe. read process ========= The process which reads, basically creates FIFO using mkfifo - ret_val = mkfifo(HALF_DUPLEX, 0666);) func. It then opens the pipe using open func - fd =... (1 Reply)

2. Programming

Hi All, I am facing a vague issue while trying to make two process talk to each other using named pipe. read process ========= The process which reads, basically creates FIFO using mkfifo - ret_val = mkfifo(HALF_DUPLEX, 0666) func. It then opens the pipe using open func - fd = open... (2 Replies)

3. UNIX for Advanced & Expert Users

Hey folks, i need communicate between 2 processes in a reliable manner. The information delivery has to be guarenteed. I thought about proc 2 sending a signal to proc 1 when information has being written to disc and wirte() has been verified (sync/flush). The IPC method for the data is named... (4 Replies)

4. UNIX for Dummies Questions & Answers

Gurus, I've a File Transaction Server, which communicates with other servers and performs some processing.It uses many Named PIPE's. By mistake i copied a named PIPE into a text file. I heard that PIPE files shouldn't be copied.Isn't it? Since it's a production box, i'm afraid on... (2 Replies)

5. UNIX for Dummies Questions & Answers

I want to copy the contents of a named pipe to a file. I have tried using: cat pipe.p >> transcript.log but I have been unsuccessful, any ideas? (4 Replies)

6. UNIX for Advanced & Expert Users

I did cat < myFile >> myPipe I was hoping that if I did ls -l, myPipe would now be holding the contents of myFile, and would be the same size. But it was 0. Also strange was that when I did the command above, cat did not return control back to the shell. Why? thanks (4 Replies)

7. Shell Programming and Scripting

I would like to pipe (redirect ? - what is the right term?) the output of my script to a file named with the current date. If I run this at a command prompt: date +'%Y%m%d" ...it returns "20110429" OK, that's good... so I try: ./script.sh > "'date +%Y%m%d'.csv" I get a file... (1 Reply)

8. 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)

9. Shell Programming and Scripting

Hi, I am getting data into a Named pipe. Does Named pipe have any size restriction; I know it does not have any storage and it just passes on the data to the next process. I want to know, if there will be a difference in the Named pipe performance if the data input is more. (I am using DB2... (1 Reply)

10. UNIX for Dummies Questions & Answers

Ok, I can't seem to figure this out or find anything on the web about this. I'm on Sun Solaris, UNIX. I have the following test script: #!/bin/ksh touch test.file LOG=./tmp.log rm -f ${LOG} PIPE=./tmp.pipe mkfifo ${PIPE} trap "rm -f ${PIPE}" EXIT tee -a ${LOG} < ${PIPE} & ... (17 Replies)