Force a shell script to fflush

Question

I was wondering if it was possible to tell bash that all calls to echo or printf should be followed up by a subsequent call to fflush()

Answer 1

If you force the file to be read, it seems to cause the buffer to flush. These work for me.

Either read the data into a useless variable:

    x=$(<$logfile)

Or do a UUOC:

    cat $logfile > /dev/null