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.\" @(#)getdtablesize.2 6.3 (Berkeley) %G%
getdtablesize \- get descriptor table size
Each process has a fixed size descriptor table,
which is guaranteed to have at least 20 slots. The entries in
the descriptor table are numbered with small integers starting at 0.
returns the size of this table.
close(2), dup(2), open(2), select(2)