Any time you need a quick reminder of an MH command's switches, use the -help switch. For example, here's a list for scan:
% scan -help syntax: scan [+folder] [msgs] [switches] switches are: -[no]clear -form formatfile -(forma)t string -[no]header -width columns -[no]reverse -(file) file -(help) version: MH 6.8.3 #1[UCI] (ora) of Sun Feb 13 14:19:54 PST 1994 options: [ATTVIBUG] [BIND] [BSD42] [BSD43] [DUMB] [FLOCK] [GCOS_HACK] [MHE] [MIME] [NTHOLSWAP] [OVERHEAD] [POP] [POP2] [RENAME] [RPATHS] [RUSERPASS] [SENDMTS] [SOCKETS] [SUN40] [TYPESIG=void] [UNISTD] [VSPRINTF] [ZONEINFO]The syntax: shows what kinds of things you can type on the command line. Some parts of some switches are shown in parentheses -- this is the shortest abbreviation you can use -- for example, you can type -forma instead of -format. But it doesn't show all abbreviations; for example, you can use -w instead of -width.
The version: and options: information is important when you're asking questions or reporting bugs to someone who's not at your computer site. There are several versions of MH and lots of configuration options -- an expert may need to know how your MH is set up, and this information will explain it. The #1 means this was the first build of MH 6.8.3 on our computer named ora. Local changes and rebuilds will change this to #2, #3, etc. The options: are explained in your online mh-gen(8) manual page.
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This file is from the third edition of the book MH & xmh: Email for Users & Programmers, ISBN 1-56592-093-7, by Jerry Peek. Copyright © 1991, 1992, 1995 by O'Reilly & Associates, Inc. This file is freely-available; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation. For more information, see the file copying.htm.
Suggestions are welcome: Jerry Peek <email@example.com>