Re: iocLogServer simple browser

[Maren Purves <m.purves@jach.hawaii.edu>]

Hi Ron,

we log to a new file each day, and if you want to read it you
can use system commands like less, tail, grep, or some combination
of the those (something along the lines of "tail -f <file>| grep <machine>")

HTH,
Maren

Jeff Hill wrote:
> Hi Ron,
>
> > Does a simple little program exist in C to read the iocLogServer
> > circular file as messages are written to it?  I'm just wanting to see
> > the circular file messages from the program on the screen (stdout).
>
> I'm not aware that any program like that exists.
>
> Perhaps a superior approach would be to modify the log server so that it
> sends the log messages by default to stdout if the EPICS_IOC_LOG_FILE_NAME
> environment variable isn't defined (or is empty). I suppose also that the
> logic in the log server implementing a circular file would need to be
> selectively disabled if the file descriptor being written to isn't a file
> (we could easily test the file descriptor to see if it is a file or not).
>
> There are probably already some UNIX command line tools that pipe their
> input to a length constrained circular file? And of course the command line
> tool tee can be used to break out to multiple destinations.