ckermit2.txt

C-Kermit源码。是使用串口/Modem和网络通讯的程序

File CKERMIT2.TXT, Supplement to "Using C-Kermit", Second Edition

  D R A F T

As of C-Kermit version:  7.0.197
This file last updated:  8 February 2000

Authors: Frank da Cruz and Christine M. Gianone
Address: The Kermit Project
         Columbia University
         612 West 115th Street
         New York NY 10025-7799
         USA
Fax:     [phone]
E-Mail:  [e-mail]
Web:     http://www.columbia.edu/kermit/
Or:      http://www.kermit-project.org/
Or:      http://www.columbia.nyc.ny.us/kermit/

NOTICES:

This document:
  Copyright (C) 1997, 2000, Frank da Cruz and Christine M. Gianone.
  All rights reserved.

Kermit 95:
  Copyright (C) 1995, 2000, Trustees of Columbia University in the City of
  New York.  All rights reserved.

C-Kermit:
  Copyright (C) 1985, 2000,
    Trustees of Columbia University in the City of New York.
    All rights reserved.  See the C-Kermit COPYING.TXT file or the
    copyright text in the ckcmai.c module for disclaimer and permissions.

When Kerberos(TM) and/or SRP(TM) (Secure Remote Password) and/or SSL
protocol are included:
  Portions Copyright (C) 1990, Massachusetts Institute of Technology.
  Portions Copyright (C) 1991, 1993 Regents of the University of California.
  Portions Copyright (C) 1991, 1992, 1993, 1994, 1995 by AT&T.
  Portions Copyright (C) 1997, Stanford University.
  Portions Copyright (C) 1995-1997, Eric Young <[e-mail]>.

For the full text of the third-party copyright notices, see Appendix V.

------------------------------
WHAT IS IN THIS FILE

This file lists changes made to C-Kermit since the second edition of the book
"Using C-Kermit" was published and C-Kermit 6.0 was released in November 1996.
Use this file as a supplement to the second edition of "Using C-Kermit" until
the third edition is published some time in 2000.  If the "most recent update"
shown above is long ago, contact Columbia University to see if there is a
newer release.

For further information, also see the CKCBWR.TXT ("C-Kermit beware") file for
hints, tips, tricks, restrictions, frequently asked questions, etc, plus the
system-specific "beware file", e.g. CKUBWR.TXT for UNIX, CKVBWR.TXT for VMS,
etc, and also any system-specific update files such as KERMIT95.HTM for Kermit
95 (in the DOCS\MANUAL\ subdirectory of your K95 directory).

IMPORTANT: A major new feature of C-Kermit 7.0 is its ability to be an
Internet Kermit Services Daemon (IKSD), as well as an IKSD client.  All of
this is described in a separate file, IKSD.TXT.

---------------
ABOUT FILENAMES

In this document, filenames are generally shown in uppercase, but on file
systems with case-sensitive names such as UNIX, OS-9, and AOS/VS, lowercase
names are used: ckcbwr.txt, ckermit2.txt, etc.

----------------
ADDITIONAL FILES

Several other files accompany this new Kermit release:

SECURITY.TXT
  Discussion of Kermit's new authentication and encryption features.

IKSD.TXT
  How to install and manage an Internet Kermit Service Daemon.

TELNET.TXT
  A thorough presentation of Kermit's new advanced Telnet features and
  controls.

------------------------
THE NEW C-KERMIT LICENSE

The C-Kermit license was rewritten for version 7.0 to grant automatic
permission to packagers of free operating-system distributions to include
C-Kermit 7.0.  Examples include Linux (GNU/Linux), FreeBSD, NetBSD, etc.
The new license is in the COPYING.TXT file, and is also displayed by C-Kermit
itself when you give the VERSION or COPYRIGHT command.  The new C-Kermit
license does not apply to Kermit 95.

---------------
ACKNOWLEDGMENTS

Thanks to Jeff Altman, who joined the Kermit Project in 1995, for much of what
you see in C-Kermit 7.0, especially in the networking and security areas, and
his key role in designing and implementing the Internet Kermit Service Daemon.
And special thanks to Lucas Hart for lots of help with the VMS version; to
Peter Eichhorn for continuous testing on the full range of HP-UX versions and
for a consolidated set of HP-UX makefile targets; and to Colin Allen, Mark
Allen, Roger Allen, Ric Anderson, William Bader, Mitch Baker, Mitchell Bass,
Nelson Beebe, Gerry Belanger, Jeff Bernsten, Mark Berryman, John Bigg, Volker
Borchert, Jonathan Boswell, Tim Boyer, Frederick Bruckman, Kenneth Cochran,
Jared Crapo, Bill Delaney, Igor Sobrado Delgado, Clarence Dold, Joe Doupnik,
John Dunlap, Max Evarts, Patrick French, Carl Friedberg, Carl Friend, Hirofumi
Fujii, Andrew Gabriel, Gabe Garza, Boyd Gerber, David Gerber, George Gilmer,
Hunter Goatley, DJ Hagberg, Kevin Handy, Andy Harper, Randolph Herber, Sven
Holstrum, Michal Jaegermann, Graham Jenkins, Dick Jones, Terry Kennedy, Robert
D Keys, Nick Kisseberth, Igor Kovalenko, David Lane, Adam Laurie, Jeff
Liebermann, Eric Lonvick, Hoi Wan Louis, Arthur Marsh, Gregorie Martin, Peter
Mauzey, Dragan Milicic, Todd Miller, Christian Mondrup, Daniel Morato, Dat
Nguyen, Herb Peyerl, Jean-Pierre Radley, Mitchell Pilot, Steve Rance, Stephen
Riehm, Nigel Roles, Larry Rosenman, Jay S Rouman, David Sanderson, John
Santos, Michael Schmitz, Steven Schultz, Bob Shair, Richard Shuford, Fred
Smith, Michael Sokolov, Jim Spath, Peter Szell, Ted T'so, Brian Tillman, Linus
Torvalds, Patrick Volkerding, Martin Vorlaender, Steve Walton, Ken Weaverling,
John Weekley, Martin Whitaker, Jim Whitby, Matt Willman, Joellen Windsor,
Farrell Woods, and many others for binaries, hosting, reviews, suggestions,
advice, bug reports, and all the rest over the 3+ year C-Kermit 7.0
development cycle.  Thanks to Russ Nelson and the board of the Open Software
Initiative for their cooperation in developing the new C-Kermit license and to
the proprietors of those free UNIX distributions that have incorporated
C-Kermit 7.0 for their cooperation and support, especially FreeBSD's Joerg
Wunsch.

-----------------------
NOTE TO KERMIT 95 USERS

Like the book "Using C-Kermit", this file concentrates on the aspects of
C-Kermit that are common to all versions: UNIX, VMS, VOS, AOS/VS, etc.  Please
refer to your Kermit 95 documentation for information that is specific to
Kermit 95.

C-Kermit 7.0 corresponds to Kermit 95 1.1.18.

-------------------------------------
C-KERMIT VERSIONS AND VERSION NUMBERS

"C-Kermit" refers to all the many programs that are compiled in whole or in
part from common C-language source code, comprising:

 . A Kermit file transfer protocol module
 . A command parser and script execution module
 . A modem-dialing module
 . A network support module
 . A character-set translation module.

and several others.  These "system-independent" modules are combined with
system-dependent modules for each platform to provide the required
input/output functions, and also in some cases overlaid with an alternative
user interface, such as Macintosh Kermit's point-and-click interface, and in
some cases also a terminal emulator, as Kermit 95.

The C-Kermit version number started as 1.0, ... 3.0, 4.0, 4.1 and then
(because of confusion at the time with Berkeley UNIX 4.2), 4B, 4C, and so on,
with the specific edit number in parentheses, for example 4E(072) or 5A(188).
This scheme was used through 5A(191), but now we have gone back to the
traditional numbering scheme with decimal points:  major.minor.edit; for
example 7.0.196.  Internal version numbers (the \v(version) variable),
however, are compatible in C-Kermit 5A upwards.

Meanwhile, C-Kermit derivatives for some platforms (Windows, Macintosh) might
go through several releases while C-Kermit itself remains the same.  These
versions have their own platform-specific version numbers, such as Kermit 95
1.1.1, 1.1.2, and so on.

C-Kermit Version History:

  1.0       1981-1982         Command-line only, 4.2 BSD UNIX only
  2.0       (*)               (who remembers...)
  3.0       May 1984          Command-line only, supports several platforms
  4.0-4.1   Feb-Apr 1985 (*)  First interactive and modular version
  4C(050)   May 1985
  4D(060)   April 1986
  4E(066)   August 1987       Long packets
  4E(068)   January 1988
  4E(072)   January 1989
  4F(095)   August 1989 (*)   Attribute packets
  5A(188)   November 1992     Scripting, TCP/IP, sliding windows, ANSI C (1)
  5A(189)   September 1993    Control-char unprefixing
  5A(190)   October 1994      Recovery
  5A(191)   April 1995        OS/2 only - VT220 emulation
  6.0.192   September 1996    Intelligent dialing, autodownload, lots more (2)
  6.1.193   1997-98 (*)       Development only
  6.1.194   June 1998         K95 only - switches, directory recursion, more
  7.0.195   August 1999       IKSD + more (CU only as K95 1.1.18-CU)
  7.0.196   1 January 2000    Unicode, lots more
  7.0.197   8 February 2000   Same as 196 but builds on additional platforms(3)

(*) Never formally released (4.0 was a total rewrite)
(1) "Using C-Kermit", 1st Edition.
(2) "Using C-Kermit", 2nd Edition.
(3) There is no functional difference between 196 and 197, not even bug fixes.
    The only changes are to #ifdefs, declarations, and the makefile, sufficient
    to make it build on several platforms where 196 did not build.  Binaries
    that announce themselves as 197 are functionally identical to 196 binaries.

------------------------------
CONTENTS

 I.  C-KERMIT DOCUMENTATION: Information about the C-Kermit manual

 II. NEW FEATURES: Documentation for Features Added Since C-Kermit 6.0

     (0) INCOMPATIBILITIES WITH PREVIOUS RELEASES
     (1) PROGRAM AND FILE MANAGEMENT AND COMMANDS
         1.0.  Bug fixes
         1.1.  Command Continuation
         1.2.  Editor Interface
         1.3.  Web Browser and FTP Interface
         1.4.  Command Editing
         1.5.  Command Switches
               1.5.1. General Switch Syntax
               1.5.2. Order and Effect of Switches
               1.5.3. Distinguishing Switches from Other Fields
               1.5.4. Standard File Selection Switches
               1.5.5. Setting Preferences for Different Commands
         1.6.  Dates and Times
         1.7.  Partial Completion of Keywords
         1.8.  Command Recall
         1.9.  EXIT Messages
         1.10. Managing Keyboard Interruptions
         1.11. Taming the Wild Backslash -- Part Deux
	       1.11.1. Background
	       1.11.2. Kermit's Quoting Rules
               1.11.3. Passing DOS Filenames from Kermit to Shell Commands
	       1.11.4. Using Variables to Hold DOS Filenames
	       1.11.5. Passing DOS Filenames as Parameters to Macros
	       1.11.6. Passing DOS File Names from Macro Parameters to
                       the DOS Shell
               1.11.7. Passing DOS Filenames to Kermit from the Shell
         1.12. Debugging
         1.13. Logs
         1.14. Automatic File-Transfer Packet Recognition at the Command Prompt
         1.15. The TYPE Command
         1.16. The RESET Command
         1.17. The COPY and RENAME Commands
         1.18. The MANUAL Command
         1.19. String and Filename Matching Patterns
         1.20. Multiple Commands on One Line
         1.21. What Do I Have?
         1.22. Generalized File Input and Output
	       1.22.1. Why Another I/O System?
	       1.22.2. The FILE Command
	       1.22.3. FILE Command Examples
	       1.22.4. Channel Numbers
	       1.22.5. FILE Command Error Codes
	       1.22.6. File I/O Variables
	       1.22.7. File I/O Functions
	       1.22.8. File I/O Function Examples
         1.23. The EXEC Command
         1.24. Getting Keyword Lists with '?'
     (2) MAKING AND USING CONNECTIONS
         2.0. SET LINE and SET HOST Command Switches
	 2.1. Dialing
	      2.1.1. The Dial Result Message
	      2.1.2. Long-Distance Dialing Changes
	      2.1.3. Forcing Long-Distance Dialing
	      2.1.4. Exchange-Specific Dialing Decisions
	      2.1.5. Cautions about Cheapest-First Dialing
	      2.1.6. Blind Dialing (Dialing with No Dialtone)
              2.1.7. Trimming the Dialing Dialog
              2.1.8. Controlling the Dialing Speed
              2.1.9. Pretesting Phone Number Conversions
              2.1.10. Greater Control over Partial Dialing
              2.1.11. New DIAL-related Variables and Functions
              2.1.12. Increased Flexibility of PBX Dialing
              2.1.13. The DIAL macro - Last-Minute Phone Number Conversions
              2.1.14. Automatic Tone/Pulse Dialing Selection
              2.1.15. Dial-Modifier Variables
              2.1.16. Giving Multiple Numbers to the DIAL Command
	 2.2. Modems
	      2.2.1. New Modem Types
	      2.2.2. New Modem Controls
	 2.3. TELNET and RLOGIN
              2.3.0. Bug Fixes
	      2.3.1. Telnet Binary Mode Bug Adjustments
	      2.3.2. VMS UCX Telnet Port Bug Adjustment
	      2.3.3. Telnet New Environment Option
	      2.3.4. Telnet Location Option
              2.3.5. Connecting to Raw TCP Sockets
              2.3.6. Incoming TCP Connections
	 2.4. The EIGHTBIT Command
	 2.5. The Services Directory
         2.6. Closing Connections
	 2.7. Using C-Kermit with External Communication Programs
              2.7.0. C-Kermit over tn3270 and tn5250
	      2.7.1. C-Kermit over Telnet
	      2.7.2. C-Kermit over Rlogin
              2.7.3. C-Kermit over Serial Communication Programs
	      2.7.4. C-Kermit over Secure Network Clients
	      2.7.4.1. SSH
	      2.7.4.2. SSL
	      2.7.4.3. SRP
	      2.7.4.4. SOCKS
              2.7.4.5. Kerberos and SRP
         2.8. Scripting Local Programs
         2.9. X.25 Networking
              2.9.1. IBM AIXLink/X.25 Network Provider Interface for AIX
              2.9.2. HP-UX X.25
         2.10. Additional Serial Port Controls
         2.11. Getting Access to the Dialout Device
         2.12. The Connection Log
         2.13. Automatic Connection-Specific Flow Control Selection
         2.14. Trapping Connection Establishment and Loss
         2.15. Contacting Web Servers with the HTTP Command
     (3) TERMINAL CONNECTION