Era Eriksson suggested this to Ralph Henderson (who wants to overwrite a
folder instead of appending to it):
| :0:
| | cat >mailfile
You need to name the local lockfile there; procmail has nothing to infer
a name from and will complain.
:0:mailfile$LOCKEXT
| cat > mailfile
| > Finally, is that lockfile needed?
|
| Since you're overwriting the file, not really, I guess.
That depends on the lengths of the writes to it. A lockfile is probably a
good idea. On the other hand, overwriting recipes usually are for mail that
comes in infrequently and are not likely, unless a horrible mail backup has
just gotten unjammed, to be invoked by two messages being processed at the
same time.