how to get the output of a non-stop process?

This is a discussion on how to get the output of a non-stop process? within the C Programming forums, part of the General Programming Boards category; i use popen to get the output of this command: tail -f /var/log/kern.log I use a while loop and fgets ...

  1. #1
    dkt
    dkt is offline
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    how to get the output of a non-stop process?

    i use popen to get the output of this command:
    tail -f /var/log/kern.log

    I use a while loop and fgets (to get the output)
    the process is running and will not stop. other process cannot run and others hang!

    how to solve this?

  2. #2
    Guest Sebastiani's Avatar
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    while( !feof( filePointer ) )
    fgets(buff, 500, filePointer);

    ...Should work.

    else you could do:

    while(fgets(buff, 500, filePointer) != NULL)
    //do something

    ..or simply:
    while(fgets(buff, 500, filePointer) )

    if that still doesn't work, be sure (A) the file is a text file, and (B) you opened it in text mode, ie: "r".



    ITSA
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