"Jim C. Nasby" <jnasby@pervasive.com> writes:
> How would sync<RETURN>sync<RETURN> differ from sync;sync? The second
> case will wait for the first command to return, or is there a race
> condition that's reduced by typing by hand?
The actual runtime of the "sync" program is epsilon, because it doesn't
wait for all the I/O to happen. The entire reason for the custom is
that the I/O is going on while you type the second "sync". And yes,
it's a race condition.
regards, tom lane
