ckermit2.txt

C-Kermit源码。是使用串口/Modem和网络通讯的程序

         3.1. CONNECT Command Switches
         3.2. Triggers
         3.3. Transparent Printing
         3.4. Binary and Text Session Logs
     (4) FILE TRANSFER AND MANAGEMENT
         4.0. Bug Fixes, Minor Changes, and Clarifications
	 4.1. File-Transfer Filename Templates
	 4.1.1. Templates in the As-Name
	 4.1.2. Templates on the Command Line
	 4.1.3. Post-Transfer Renaming
	 4.2. File-Transfer Pipes and Filters
         4.2.1. Introduction
	 4.2.1.1. Terminology
	 4.2.1.2. Notation
	 4.2.1.3. Security
	 4.2.2. Commands for Transferring from and to Pipes
	 4.2.2.1. Sending from a Command
	 4.2.2.2. Receiving to a Command
	 4.2.3. Using File-Transfer Filters
	 4.2.3.1. The SEND Filter
	 4.2.3.2. The RECEIVE Filter
	 4.2.4. Implicit Use of Pipes
	 4.2.5. Success and Failure of Piped Commands
         4.2.6. Cautions about Using Pipes to Transfer Directory Trees
	 4.2.7. Pipes and Encryption
         4.2.8. Commands and Functions Related to Pipes
	 4.2.8.1. The OPEN !READ and OPEN !WRITE Commands
	 4.2.8.2. The REDIRECT Command
         4.2.8.3. Receiving Mail and Print Jobs
	 4.2.8.4. Pipe-Related Functions
         4.3. Automatic Per-File Text/Binary Mode Switching
	 4.3.1. Exceptions
	 4.3.2. Overview
	 4.3.3. Commands
	 4.3.4. Examples
         4.4. File Permissions
	 4.4.1. When ATTRIBUTES PROTECTION is OFF
	 4.4.1.1. Unix
	 4.4.1.2. VMS
	 4.4.2. When ATTRIBUTES PROTECTION is ON
	 4.4.2.1. System-Specific Permissions
	 4.4.2.1.1. UNIX
	 4.4.2.1.2. VMS
	 4.4.2.2. System-Independent Permissions
         4.5. File Management Commands
         4.5.1. The DIRECTORY Command
         4.5.2. The CD and BACK Commands
         4.5.2.1. Parsing Improvements
         4.5.2.2. The CDPATH
	 4.5.3. Creating and Removing Directories
	 4.5.4. The DELETE and PURGE Commands
         4.6. Starting the Remote Kermit Server Automatically
         4.7. File-Transfer Command Switches
         4.7.1. SEND Command Switches
         4.7.2. GET Command Switches
         4.7.3. RECEIVE Command Switches
         4.8. Kermit Protocol Improvements
	 4.8.1. Multiple Attribute Packets
	 4.8.2. Very Short Packets
         4.9. Wildcard / File Group Expansion
	 4.9.1. In UNIX C-Kermit
	 4.9.2. In Kermit 95
	 4.9.3. In VMS, AOS/VS, OS-9, VOS, etc.
         4.10. Additional Pathname Controls
         4.11. Recursive SEND and GET: Transferring Directory Trees
	 4.11.1. Command-Line Options
	 4.11.2. The SEND /RECURSIVE Command
	 4.11.3. The GET /RECURSIVE Command
	 4.11.4. New and Changed Functions
	 4.11.5. Moving Directory Trees Between Like Systems
	 4.11.6. Moving Directory Trees Between Unlike Systems
         4.12. Where Did My File Go?
         4.13. File Output Buffer Control
         4.14. Improved Responsiveness
         4.15. Doubling and Ignoring Characters for Transparency
         4.16. New File-Transfer Display Formats
         4.17. New Transaction Log Formats
         4.17.1. The BRIEF Format
         4.17.2. The FTP Format
         4.18. Unprefixing NUL
         4.19. Clear-Channel Protocol
         4.20. Streaming Protocol
	 4.20.1. Commands for Streaming
	 4.20.2. Examples of Streaming
	 4.20.2.1. Streaming on Socket-to-Socket Connections
	 4.20.2.2. Streaming on Telnet Connections
         4.20.2.3. Streaming with Limited Packet Length
         4.20.2.4. Streaming on Dialup Connections
         4.20.2.5. Streaming on X.25 Connections
         4.20.3. Streaming - Preliminary Conclusions
         4.21. The TRANSMIT Command
	 4.22. Coping with Faulty Kermit Implementations
	 4.22.1. Failure to Accept Modern Negotiation Strings
	 4.22.2. Failure to Negotiate 8th-bit Prefixing
	 4.22.3. Corrupt Files
	 4.22.4. Spurious Cancellations
	 4.22.5. Spurious Refusals
	 4.22.6. Failures during the Data Transfer Phase
	 4.22.7. Fractured Filenames
	 4.22.8. Bad File Dates
         4.23. File Transfer Recovery
         4.24. FILE COLLISION UPDATE Clarification
         4.25. Autodownload Improvements
     (5) CLIENT/SERVER
         5.0. Hints
	 5.1. New Command-Line Options
	 5.2. New Client Commands
	 5.3. New Server Capabilities
         5.3.1. Creating and Removing Directories
         5.3.2. Directory Listings
         5.4. Syntax for Remote Filenames with Embedded Spaces
         5.5. Automatic Orientation Messages upon Directory Change
	 5.6. New Server Controls
	 5.7. Timeouts during REMOTE HOST Command Execution
     (6) INTERNATIONAL CHARACTER SETS
         6.0. ISO 8859-15 Latin Alphabet 9
         6.1. The HP-Roman8 Character Set
         6.2. Greek Character Sets
         6.3. Additional Latin-2 Character Sets
         6.4. Additional Cyrillic Character Sets
         6.5. Automatic Character-Set Switching
         6.6. Unicode
	 6.6.1. Overview of Unicode
	 6.6.2. UCS Byte Order
	 6.6.2. UCS Transformation Formats
	 6.6.3. Conformance Levels
	 6.6.4. Relationship of Unicode with Kermit's Other Character Sets
	 6.6.5. Kermit's Unicode Features
	 6.6.5.1. File Transfer
	 6.6.5.2. The TRANSLATE Command
	 6.6.5.3. Terminal Connection
	 6.6.5.4. The TRANSMIT Command
	 6.6.5.5. Summary of Kermit Unicode Commands
         6.7. Client/Server Character-Set Switching
     (7) SCRIPT PROGRAMMING
         7.0. Bug Fixes
         7.1. The INPUT Command
	 7.1.1. INPUT Timeouts
	 7.1.2. New INPUT Controls
	 7.1.3. INPUT with Pattern Matching
	 7.1.4. The INPUT Match Result
	 7.2. New or Improved Built-In Variables
	 7.3. New or Improved Built-In Functions
         7.4. New IF Conditions
         7.5. Using More than Ten Macro Arguments
         7.6. Clarification of Function Call Syntax
         7.7. Autodownload during INPUT Command Execution
         7.8. Built-in Help for Functions.
	 7.9. Variable Assignments
	 7.9.1. Assignment Operators
	 7.9.2. New Assignment Commands
	 7.10. Arrays
	 7.10.1. Array Initializers
	 7.10.2. Turning a String into an Array of Words
	 7.10.3. Arrays of Filenames
	 7.10.4. Automatic Arrays
	 7.10.5. Sorting Arrays
	 7.10.6. Displaying Arrays
         7.10.7. Other Array Operations
         7.10.8. Hints for Using Arrays
         7.10.9. Do-It-Yourself Arrays
         7.10.10. Associative Arrays
         7.11. OUTPUT Command Improvements
         7.12. Function and Variable Diagnostics
         7.13. Return Value of Macros
         7.14. The ASSERT, FAIL, and SUCCEED Commands.
         7.15. Using Alarms
         7.16. Passing Arguments to Command Files
         7.17. Dialogs with Timed Responses
         7.18. Increased Flexibility of SWITCH Case Labels
         7.19. "Kerbang" Scripts
         7.20. IF and XIF Statement Syntax
         7.20.1. The IF/XIF Distinction
         7.20.2. Boolean Expressions (The IF/WHILE Condition)
         7.21. Screen Formatting and Cursor Control
         7.22. Evaluating Arithmetic Expressions
         7.23. Floating-Point Arithmetic
         7.24. Tracing Script Execution
         7.25. Compact Substring Notation
         7.26. New WAIT Command Options
         7.26.1. Waiting for Modem Signals
         7.26.2. Waiting for File Events
         7.27. Relaxed FOR and SWITCH Syntax
     (8) USING OTHER FILE TRANSFER PROTOCOLS
     (9) COMMAND-LINE OPTIONS
         9.0. Extended-Format Command-Line Options
	 9.1. Command Line Personalities
	 9.2. Built-in Help for Command Line Options
	 9.3. New Command-Line Options
    (10) C-KERMIT AND G-KERMIT

III. APPENDICES

III.1. Character Set Tables
III.1.1. The Hewlett Packard Roman8 Character Set
III.1.2. Greek Character Sets
III.1.2.1. The ISO 8859-7 Latin / Greek Alphabet
III.1.2.2. The ELOT 927 Character Set
III.1.2.3. PC Code Page 869
III.2. Updated Country Codes

IV. ERRATA & CORRIGENDA: Corrections to "Using C-Kermit" 2nd Edition.
V. ADDITIONAL COPYRIGHT NOTICES

------------------------------
I. C-KERMIT DOCUMENTATION

The user manual for C-Kermit is:

  Frank da Cruz and Christine M. Gianone, "Using C-Kermit", Second Edition,
  Digital Press /  Butterworth-Heinemann, Woburn, MA, 1997, 622 pages,
  ISBN 1-55558-164-1.

The present document is a supplement to "Using C-Kermit" 2nd Ed, not a
replacement for it.

  US single-copy price: $44.95; quantity discounts available.  Available in
  bookstores or directly from Columbia University:

    The Kermit Project
    Columbia University
    612 West 115th Street
    New York NY  10025-7799
    USA
    Telephone: [phone]
    Fax:       [phone]

  Domestic and overseas orders accepted.  Price: US $44.95 (US, Canada, and
  Mexico).  Shipping: $4.00 within the USA; $15.00 to all other countries.
  Orders may be paid by MasterCard or Visa, or prepaid by check in US dollars.
  Add $65 bank fee for checks not drawn on a US bank.  Do not include sales
  tax.  Inquire about quantity discounts.

  You can also order by phone from the publisher, Digital Press /
  Butterworth-Heinemann, with MasterCard, Visa, or American Express:

    [phone]   (Woburn, Massachusetts office for USA & Canada)
    [phone]   (Oxford, England distribution centre for UK & Europe)
    [phone]  (Melbourne, Vic, office for Australia & NZ)
    [phone]      (Singapore office for Asia)
    [phone]  (Durban office for South Africa)

  A German-language edition of the First Edition is also available:

    Frank da Cruz and Christine M. Gianone, "C-Kermit - Einfuehrung und
    Referenz", Verlag Heinz Heise, Hannover, Germany (1994).
    ISBN 3-88229-023-4.  Deutsch von Gisbert W. Selke.  Price: DM 88,00.
    Verlag Heinz Heise GmbH & Co. KG, Helstorfer Strasse 7, D-30625 Hannover.
    Tel. [phone], Fax. [phone].

The Kermit file transfer protocol is specified in:

  Frank da Cruz, "Kermit, A File Transfer Protocol", Digital Press,
  Bedford, MA, 1987, 379 pages, ISBN 0-932376-88-6.
  US single-copy price: $39.95.  Availability as above.

News and articles about Kermit software and protocol are published
periodically in the journal, Kermit News.  Subscriptions are free; contact
Columbia University at the address above.

Online news about Kermit is published in the comp.protocols.kermit.announce
and comp.protocols.kermit.misc newsgroups.

------------------------------
II. NEW FEATURES

Support for the Bell Labs Plan 9 operating system was added to version 6.0
too late to be mentioned in the book (although it does appear on the cover).

Specific changes and additions are grouped together by major topic, roughly
corresponding to the chapters of "Using C-Kermit".

(0) INCOMPATIBILITIES WITH PREVIOUS RELEASES

C-Kermit 7.0 uses FAST Kermit protocol settings by default.  This includes
"unprefixing" of certain control characters.  Because of this, file transfers
that worked with previous releases might not work in the new release (but it
is more likely that they will work, and much faster).  If a transfer fails,
you'll get a context-sensitive hint suggesting possible causes and cures.

C-Kermit 7.0 transfers files in BINARY mode by default.  To restore the
previous behavior, put SET FILE TYPE TEXT in your C-Kermit initialization
file.

No matter whether FILE TYPE is BINARY or TEXT by default, C-Kermit 7.0 now
switches between text and binary mode automatically on a per-file basis
according to various criteria, including (a) which kind of platform is on the
other end of the connection (if known), (b) the version of Kermit on the other
end, and (c) the file's name (see Sections 4 and 4.3).  To disable this
automatic switching and restore the earlier behavior, put SET TRANSFER MODE
MANUAL in your C-Kermit initialization file.  To disable automatic switching
for a particular transfer, include a /TEXT or /BINARY switch with your SEND or
GET command.

The RESEND and REGET commands automatically switch to binary mode; previously
if RESEND or REGET were attempted when FILE TYPE was TEXT, these commands
would fail immediately, with a message telling you they work only when the
FILE TYPE is BINARY.  Now they simply do this for you.  See section 4.23 for
additional (important) information.

SET PREFIXING CAUTIOUS and MINIMAL now both prefix linefeed (10 and 138)
in case rlogin or cu are "in the middle", since otherwise <LF>~ might appear
in Kermit packets, and this would rlogin or cu to disconnect, suspend,
escape back, or otherwise wreck the file transfer.  Xon and Xoff are now
always prefixed too, even when Xon/Xoff flow control is not in effect, since
unprefixing them has proven dangerous on TCP/IP connections.

In UNIX, VMS, Windows, and OS/2, the DIRECTORY command is built into C-Kermit
itself rather than implemented by running an external command or program.
The built-in command might not behave the way the platform-specific external
one did, but many options are available for customization.  Of course the
underlying platform-specific command can still be accessed with "!", "@",
or "RUN" wherever the installation does not forbid.  In UNIX, the "ls"