On 10/19/09 Mon Oct 19, 2009 11:38 AM, "Harry Putnam" <[email protected]>
scribbled:
>
> I'm not sure what it is about the tail -f command that allows it to
> keep reading over restarts of system logger (on Opensolaris)... but
> how can I emulate whatever it is.. in perl?
>
There is an FAQ:
perldoc -q tail
See if that helps you.
The idea is to read until the end-of-file is reached, pause for awhile, then
try reading again. However, reaching EOF sets a flag in the file handle and
subsequent reads will fail. The trick is to reset the EOF flag with a seek
command, either
seek($fh,0,1)
or
$curpos = tell($fh);
seek($fh,$curpos,0);
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