JillB:

Looking at your code, I can't see anything that would cause the symptoms you describe. I suspect that you simply filled your scrollback buffer and can't scroll backwards far enough to see the start of the run. You could check that by changing your for loop at the end to something like:

for ($i= 0; $i<200; $i=$i+1)
[download]

To show only the first couple hundred lines of the file.

...roboticus

When your only tool is a hammer, all problems look like your thumb.