more pipe questions

[Ronald Bultje <rbultje ronald bitfreak net>]

I remember this question being asked before, but deleted it, I think...

If I write data to a file (continuously, a logfile kinda thing), how can I
check this file for "being updated"? I now use a read-pipe and popen("cat
file", "r"); but there's probably a better way.

Or is it maybe possible to open this logfile "continuously" so that any
data written to it can be caught at once?

Besides that, if I put this popen("cat file", "r"); in a while-loop, my
tasklist shows a [cat <defunc>] and the program stops there...... Any clue
why?

Ronald

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