_icmd.txt

一个通讯程序源码

usage: rev
.DE

This command displays ECU's revision, the transmitter process id'
and the date and time ECU was made.

.*s 2 "RK : receive via C-Kermit"
.DS L
usage: rk
.DE

This command invokes C-Kermit to
receive
files. ECU searches the PATH list for 'kermit' or 'ckermit',
expecting to find Columbia University C-Kermit version 5A(173)
or later.  The file ~/.kermrc must be set up to have any desired
initialization parameters you desire (refer to C-Kermit
documentation for more information).
The remote protocol must have been started prior to the
execution of this command.

WARNING: until further notice, avoid suspending Kermit
with ^\Z.  ECU is totally unprepared to act as a job control
process group leader.

.*s 2 "RS : receive via SEAlink"
.DS L
usage: rs
.DE

This command invokes a SEAlink receive protocol.

.*s 2 "RTScts : control RTS/CTS flow control"
.DS L
usage: rtscts [ off | on | no | yes | 0..7 ]
.DE

This command controls the RTS/CTS flow control feature of
the line driver (which may or may not work).
This is a very confusing area though it should not be.

If no argument is supplied, the current setting is
displayed.  Specifying 0 or n disables the facility;
1 or y causes RTS/CTS flow control to be enabled.

What the command does is to manipulate the RTSFLOW and CTSFLOW
bits of the termio c_cflag word (see 
.B termio(S) ).

SCO's sio driver before UNIX 3.2v4/ODT 2.0
does half duplex flow control.
FAS does hardware flow control based on the device magic
number, but if you use a device number specifying no hardware flow
control, RTSFLOW and CTSFLOW can be used to specify SCO-style flow
control.
CRTSFL offers full duplex line control
on 3.2v4 and later ONLY for SCO's sio driver.

.DS I
 arg | RTSFLOW | CTSFLOW    arg | RTSFLOW | CTSFLOW | CRTSFL
-----+---------+---------  -----+---------+---------+--------
 off |   0     |   0         0  |   0     |   0     |
 on  |   0     |   1         1  |   0     |   1     |
 no  |   0     |   0         2  |   1     |   0     |
 yes |   0     |   1         3  |   1     |   1     |
                             4  |   0     |   0     |   1
.DE
Choice 4 only works on SCO 3.2v4 and ODT 2.0.
As you can see, numeric values are masks.
If the 4 bit is present in the numeric value, it
overrides the lower-order bits:  Specifying 7 as an argument
specifies CRTSFL is to be used if it is supported, otherwise
RTSFLOW and CTSFLOW.

Under System V Release 4, an TCGETX/TCSETX manipulation
is performed, modifying the x_hflag bits as follows:
.DS I
argument | RTSXOFF | CTSXON    argument | RTSXOFF | CTSXON 
---------+---------+---------  ---------+---------+---------
  off    |   0     |   0         0      |   0     |   0
  on     |   0     |   1         1      |   0     |   1
  no     |   0     |   0         2      |   1     |   0
  yes    |   0     |   1         3      |   1     |   1
.DE
Under SunOS 4.1, only CTS support is provided.  You should read
the termio and zs man pages.  Arguments result in the stated
manipulations of the termio element c_cflag:
.DS I
argument | CRTSCTS    argument | CRTSCTS
---------+---------  ----------+---------
  off    |   0           0     |   0
  on     |   1           1     |   1
  no     |   0     
  yes    |   1    
.DE

.*s 2 "RX : receive via XMODEM/CRC"
.DS L
usage: rx
.DE

This command invokes ecurz to receive files from the remote
system using XMODEM/CRC.

After entering the command, you are prompted as to whether
or not file CR/LF characters are to be converted to
newlines.  If you are transferring text files from a system
which contain CR/LF line terminators, you must answer yes
to this question.  You should answer no when transferring
binary files, such as executables, .arc files and the like.
File transfer progress is presented on a visual display.  To
abort the transfer, press your interrupt key (usually DEL
unless reset with stty(C)).


.*s 2 "RY : receive via YMODEM Batch"
.DS L
usage: ry
.DE

This command invokes ecurz to receive files from the remote
system using YMODEM batch with CRC-16 error correction.  The
YMODEM is "true YMODEM", not XMODEM-1k.  File transfer
progress is presented on a visual display.  To abort the
transfer, press your interrupt key (usually DEL unless reset
with stty(C)).


.*s 2 "RZ : receive via ZMODEM/CRC32"
.DS L
usage: rz
.DE

This command invokes ecurz to receive files from the remote
system using ZMODEM/CRC32.  
The remote sender must have been started prior to the
execution of this command.
File transfer progress is
presented on a visual display.  
To abort the transfer, press
your interrupt key (usually DEL unless reset with stty(C)).

If automatic ZMODEM frame detection is enabled and
ECU is in the interactive mode,
this command is executed automatically.
Automatic ZMODEM frame detection is NOT supported 
during procedure execution.


.*s 2 "SDNAME : select screen dump file name"
.DS L
usage: sdname [<filename>]
.DE

When the "cursor 5" key is pressed, the screen contents are
dumped to a file.  By default, this file is named '~/.ecu/screen.dump'.
This command either displays or changes the current screen
dump file name, depending upon whether or not a argument
is supplied.

The actions of this command have no effect on the
operation of the
.b scrdump
procedure command.

See the section titled "Screen Dump" for more information.

.*s 2 "SK : send via C-Kermit"
.DS L
usage: sk [<file-list>]
.DE

This command invokes C-Kermit to
send
files. ECU searches the PATH list for 'kermit' or 'ckermit',
expecting to find Columbia University C-Kermit version 5A(173)
or later.  The file ~/.kermrc must be set up to have any desired
initialization parameters you desire (refer to C-Kermit
documentation for more information).
The remote protocol must have been started prior to the
execution of this command.

WARNING: until further notice, avoid suspending Kermit
with ^\Z.  ECU is totally unprepared to act as a job control
process group leader.

After entering the command, you are prompted as to whether
or not file newline characters are to be converted to CR/LF.
If you are transferring text files to a system which
requires CR/LF line terminators, you must answer yes to this
question.  You should answer no when transferring binary
files, such as executables, .arc files and the like.  You
are prompted to enter a list of files to send, which may
contain one or more wildcard specifications.

.*s 2 "SS : send via SEAlink"
.DS L
usage: ss [<file-list>]
.DE

This command invokes a SEAlink file transmission protocol.
.DS L

 .--[ Send SEAlink ]-------- dir: /u1/src/ecu ------------------.
 |                                                              |
 |  File(s) to send:                                            |
 |  ___________________________________________________________ |
 |                                                              |
 |    TAB:next  ^B:prev  END:perform transfer  ESC:abort        |
 `-- enter file(s) to send -------------------------------------'
.DE

.*s 2 "STat : verbose status summary"
.DS L
usage: stat
.DE

This command displays comprehensive status and statistics.
Example display:
.DS L
 % stat
Date: 08-17-1992 05:47:49 (UTC 09:47)
Communications line: /dev/tty2b 9600-N-1 
XON/XOFF input on output on
Hardware flow control configuration:
RTSFLOW off CTSFLOW off CRTSFL off
Not connected to a remote
Duplex: full  DCD watcher: off
Console: /dev/ttyp7 80x43 <pty>
Acquired by ecuungetty: /dev/tty2b
Current directory: /u1/src/ecu
Total chars transmitted: 234 (since CONNECT 142)
Total chars received:    2278 (since CONNECT 1478)
No function key set loaded
Session logging not active
Bell notify is ON
CR conversion:  incoming CR  outgoing CR
Keyboard ESC/funckey time constant = 300 msec
Pids: xmtr=20878 rcvr=20882 parent=19476 pgrp=19476
.DE

.*s 2 "SX : send via XMODEM/CRC"
.DS L
usage: sx [<file-name>]
.DE

This command invokes ecusz to send a file to the remote
system using XMODEM/CRC.

After entering the command, you are prompted as to whether
or not file CR/LF characters are to be converted to
newlines.  If you are transferring text files from a system
which contain CR/LF line terminators, you must answer yes
to this question.  You should answer no when transferring
binary files, such as executables, .arc files and the like.

You are prompted to enter a filename to send.  File transfer
progress is presented on a visual display.  To abort the
transfer, press your interrupt key (usually DEL unless reset
with stty(C)).
.DS L
 .--[ Send XMODEM/CRC ]----- dir: /u1/src/ecu -----------.
 |                                                       |
 |  File to send:                                        |
 |  ____________________________________________________ |
 |                                                       |
 |  Binary: Y (no NL-CR/LF translation)                  |
 |                                                       |
 |   TAB:next  ^B:prev  END:perform transfer  ESC:abort  |
 `-- enter file(s) to send ------------------------------'
.DE

.*s 2 "SY : send via YMODEM Batch"
.DS L
usage: sy [<file-list>]
.DE

This command invokes ecusz to send file(s) to the remote
system using YMODEM/CRC.

You are prompted to enter filename(s) to send, which may
consist of one or more wildcard specifications.  File
transfer progress is presented on a visual display.  To
abort the transfer, press your interrupt key (usually DEL
unless reset with stty(C)).
.DS L
 .--[ Send YMODEM/CRC ]----- dir: /u1/src/ecu -----------.
 |                                                       |
 |  File to send:                                        |
 |  ____________________________________________________ |
 |                                                       |
 |  Binary: Y (no NL-CR/LF translation)                  |
 |                                                       |
 |   TAB:next  ^B:prev  END:perform transfer  ESC:abort  |
 `-- enter file(s) to send ------------------------------'
.DE

.*s 2 "SZ : send via ZMODEM/CRC32"
.DS L
usage: sz [<file-list>]
.DE

This command sends files to the remote system using ZMODEM/CRC32.
The remote receiver must have been started prior to the
execution of this command unless the remote has automatic
ZMODEM frame detection.

You are prompted to enter filename(s) to send, which may
consist of one or more wildcard specifications.  File
transfer progress is presented on a visual display.  To
abort the transfer, press your interrupt key (usually DEL
unless reset with stty(C)).

Note: not all ZMODEM receiving software supports transfer of only
newer files or of resuming interrupted transfers.  If the remote
receiver does not support the feature, it may skip (reject) all
your files.  Retry the transfer specifying 'N' to 'Transfer only
newer files' and/or 'Resume interrupted transfer'.

.pp
.DS L
.--[ Send ZMODEM/CRC32 ]--- dir: /tmp ---------------------------.
|                                                                |
|  File(s) to send:                                              |
|  ckermit-5a-130                                                |
|                                                                |
|  Binary: Y (no NL-CR/LF translation)                           |
|  Overwrite destination files: Y                                |
|  Send full pathames:  N                                        |
|  Transfer only newer files:   N                                |
|  Resume interrupted transfer: N                                |
|  Window size: 0                                                |
|                                                                |
|     TAB:next  ^B:prev  END:perform transfer  ESC:abort         |
`-- enter file(s) to send ---------------------------------------'
`-- Y: no conversion, N: NLs converted to CR/LF -----------------'
`-- Y: overwrite, N: protect destination files ------------------'
`-- Y: full pathnames, N: strip directory portion from names ----'
`-- Y: resume transfer at remote file EOF, N send all -----------'
`-- Y: send only if source newer than destination, N send all ---'
`-- window size (max bytes sent before ACK required) 0 = stream -'
.DE

.*s 2 "TIme : time of day"
.DS L
usage: time
.DE

This command displays the local date and time as well as the
current UTC.

.*s 2 "TTy : console tty name"
.DS L
usage: tty
.DE

This command displays the current console tty name.


.*s 2 "XA : hex to ascii char"
.DS L
usage: xa [<hex-val>]
.DE

<hex-val> is a hexadecimal value between 0 and FF; the
parity (sign) bit is stripped and the equivalent ASCII
character value is displayed.

If no argument is supplied, a table of control characters
is printed containing decimal, octal, hex, ASCII identifiers
and two-character control character identifier.


.*s 2 "XON : line xon/xoff flow control"
.DS L
usage: xon [<arg>]
where <arg> is on    input and output flow control
               off   no flow control
               in    input flow control
               out   output flow control
.DE

This command enables or disables xon/xoff flow control.
If the argument is omitted, the current flow control state is displayed.

.*s 2 "! : execute shell"
.DS L
usage: !
       !<command>
.DE

The '!' command is a shell escape.  The environment variable
SHELL is read to determine what shell program to execute
(e.g., /bin/sh, etc).  If '!' is entered by itself, an
interactive shell is started; press ^D to exit back to ECU.
If <command> is supplied, it is executed by the shell with
an immediate return to ECU.