.\" Copyright (c) 1986 The Regents of the University of California. .\" All rights reserved. .\" .\" Redistribution and use in source and binary forms, with or without .\" modification, are permitted provided that the following conditions .\" are met: .\" 1. Redistributions of source code must retain the above copyright .\" notice, this list of conditions and the following disclaimer. .\" 2. Redistributions in binary form must reproduce the above copyright .\" notice, this list of conditions and the following disclaimer in the .\" documentation and/or other materials provided with the distribution. .\" 3. All advertising materials mentioning features or use of this software .\" must display the following acknowledgement: .\" This product includes software developed by the University of .\" California, Berkeley and its contributors. .\" 4. Neither the name of the University nor the names of its contributors .\" may be used to endorse or promote products derived from this software .\" without specific prior written permission. .\" .\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND .\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE .\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE .\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE .\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL .\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS .\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) .\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT .\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY .\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF .\" SUCH DAMAGE. .\" .\" @(#)Title 6.2 (Berkeley) 4/17/91 .\" .ps 18 .vs 22 .sp 2.75i .ft B .ce 2 UNIX User's Supplementary Documents (USD) .ps 14 .vs 16 .sp |4i .ce 2 4.3 Berkeley Software Distribution Virtual VAX\-11 Version .sp |5.75i .ft R .pt 12 .vs 16 .ce April, 1986 .sp |8.2i .ce 5 Computer Systems Research Group Computer Science Division Department of Electrical Engineering and Computer Science University of California Berkeley, California 94720 .bp .ll 5.3i .in 1.25i .hy 0 .ps 10 .vs 12p .sp |3i Copyright 1979, 1980, 1983, 1986 Regents of the University of California. Permission to copy these documents or any portion thereof as necessary for licensed use of the software is granted to licensees of this software, provided this copyright notice and statement of permission are included. .sp 2 Documents USD:1, 2, 3, 5, 6, 12, 13, 18, 19, 20, 24, 25, 26, 27, 28, 30, and 32 are copyright 1979, AT&T Bell Laboratories, Incorporated. Holders of \x'-1p'UNIX\v'-4p'\s-3TM\s0\v'4p'/32V, System III, or System V software licenses are permitted to copy these documents, or any portion of them, as necessary for licensed use of the software, provided this copyright notice and statement of permission are included. .sp 2 Documents USD:8, 9, 10, 11, 17, and 31 are part of the user contributed software. .sp 2 This manual reflects system enhancements made at Berkeley and sponsored in part by the Defense Advanced Research Projects Agency (DoD), Arpa Order No. 4871 monitored by the Naval Electronics Systems Command under contract No. N00039-84-C-0089. The views and conclusions contained in these documents are those of the authors and should not be interpreted as representing official policies, either expressed or implied, of the Defense Research Projects Agency or of the US Government.