getpriority type, id
Returns the current priority for a process, a process group, or a
type indicates which of these three process types to return.
(The type identifiers are system-specific. Consult the manpage for
gives the specific ID of the corresponding process type in type:
a process ID, a process-group ID, or a user ID. The value
0 in who
gives the priority for the current process, process group, or user.
The priority will be an integer value.
Lower values indicate higher
priority (negative values may be
returned on some systems). Invoking
getpriority will produce a fatal error if used on a machine that
doesn't implement the
getpriority system call.