В Tue, 13 Jan 2015 16:34:47 +0100 "Carlos E. R." <robin.listas@telefonica.net> пишет:
-Lf FILE Log messages to the specified file.
...
There are also "upper case" versions of
^^^^^^^^^^^^^^^^^^^^^
each of these options, which allow the corresponding logging mechanism to be restricted to certain priorities of mes- sage.
...
For -LF and -LS the priority specification
^^^^^^^
comes before the file or facility token. The priorities recognised are:
0 or ! for LOG_EMERG, 1 or a for LOG_ALERT, 2 or c for LOG_CRIT, 3 or e for LOG_ERR, 4 or w for LOG_WARNING, 5 or n for LOG_NOTICE, 6 or i for LOG_INFO, and 7 or d for LOG_DEBUG.
...
The manual explains -Lf, but not -LF.
I would not call the part you yourself quoted "does not explain". What is missing then?
From my tests, Lf seems to be a pipe, LF a file.
Both are file as explained above in manual.