Reply To: tcl help to count no of messages and append to the top

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#58847
Kevin Kinnell
Participant

    Ray Mullen wrote:

    Also in this proc i am writing individual message files for each message to other directories on the external server(that bits working fine). i.e the log is just a file that contains the basic info of the messages written and a count at the top.

    ray


    How big is your message count likely to get?  If it’s not too big, I would

  • Read the message file into a list.

    find the list size.

    write the size, and loop through the list writing the messages, to some file.

    rename the file to { audit.log }


  • Having done this sort of thing in the past (although I favor Perl for this kind of problem, I see why it would be inconvenient here) I can tell you that you really want to avoid anything that could be a race condition when you write the audit log file.  Writing to a temporary and renaming should be a minimal risk.

    If I’m misunderstanding your situation, and you are just writing a local file and transferring it via ftp, then you don’t need to worry about that race condition, of course.