This N= equate is used like this:
Nice=10 ?†? increase niceness by 10, lower priority
Nice=0 ?†? no change
Nice=-10 ?†? same as zero
Nice=b ?†? same as zero
If the number is missing, nonnumeric, or negative, the niceness change is zero (no
change). Otherwise, the niceness is increased (the priority is lowered) by the amount
specified.
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11.4 Queue Groups (V8.12 and Later) | 413
11.4.2.5 The Path= (P=) queue-group equate
The default location and name of the queue directory or directories is set by the
QueueDirectory option (?§24.9.88 on page 1070). That option defines the default
directory (for the default queue group mqueue) and the base path for all the other
queue directories. The P= queue-group equate does not override the default (as the
other equates do), but instead augments it.
The path specified by the P= queue-group equate must be a full (absolute) path, and
must contain the name of a subdirectory or subdirectories of the default path. To
illustrate, consider the following mc file declarations:
define(`QUEUE_DIR??,`/var/spool/mqueues/q.*??) ?†? the default
QUEUE_GROUP(`aolmail??, `P=/var/spool/mqueues/aolmail??) ?†? good, a subdirectory
QUEUE_GROUP(`bobmail??, `P=/var/spool/mqueues/bob.*??) ?†? good, a subdirectory
QUEUE_GROUP(`hotmail??, `P=hotmail??) ?†? bad, not a full path
QUEUE_GROUP(`slow??, `P=/var/spool/slowqueue??) ?†? bad, not a subdirectory
Here, the first line defines the default queues, which all begin with the characters q.
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