1 – AO
SEND AO (Abort Output) aborts the output of the last remote
command you entered, while the command continues to execute.
If you issue another SEND AO, the output resumes if the command
is still executing.
Use this command when the following conditions exist:
o The remote host does not recognize Ctrl/O as the flush output
character.
o You want to terminate the output but not the execution of the
process.
DCL Format
SEND AO
UNIX Format
send ao
1.1 – Example
% cd /bin
% ls -l
total 3464
-rwxr-xr-x 2 root 32768 Oct 19 1996 STTY
-rwxr-xr-x 2 root 5120 Oct 19 1996 <Ctrl/]> (characters not
echoed)
TELNET> SEND AO
^O
%
During a directory listing, the TELNET escape sequence (not
echoed to the screen) returns to TELNET prompt. The SEND AO
command aborts the UNIX ls command.
2 – AYT
SEND AYT (Are You There) reports if you are still connected to an
established connection.
DCL Format
SEND AYT
UNIX Format
send ayt
2.1 – Examples
1.$ <Ctrl/]>
TELNET> send ayt
%TELNET-I-SESSION, Session 01, host d45lt, port 23
$
$:_TNA375: 13:53:18 (DCL) CPU=00:00:00.28 PF=448 IO=104 MEM=53
$
OpenVMS client to OpenVMS server.
2.% <Ctrl/]>
TELNET> send ayt
%TELNET-I-SESSION, Session 01, host LUNA, port 23
%
[YES]
<Return>
%
OpenVMS client to UNIX server.
3.$ <Ctrl/]>
telnet> send ayt
$:_TNA37: 13:50:20 (DCL) CPU=00:00:00.12 PF=331 IO=98 MEM=66
$
UNIX client to OpenVMS server.
4.% <Ctrl/]>
telnet> send ayt
[Yes]
<Return>
%
UNIX client to UNIX server.
3 – BRK
SEND BRK (Break) terminates execution of the last command you
entered at the remote host.
Use this command when the remote host does not recognize Ctrl/C
as an interrupt character.
DCL Format
SEND BRK
UNIX Format
send brk
3.1 – Example
% cd /bin
% ls -1
total 1464
-rwxr-xr-x 2 root 32768 Oct 19 1988 STTY
-rwxr-xr-x 2 root 5120 Oct 19 1988 [
-rwxr-xr-x 1 root 45056 Oct 19 1988 adb
lrwxr-xr-x 1 root 13 Aug 21 17:41 ar -> ../usr/bin/ar
lrwxr-xr-x 1 root 13 Aug 21 17:41 as -> ../usr/bin/as
<Ctrl/]>
(characters not echoed)
TELNET> SEND BRK
This example does the following:
o Enters the UNIX ls command.
o Enters the TELNET escape sequence.
o Enters the TELNET SEND BRK command, which terminates
execution of ls at the remote host.
4 – EC
SEND EC (Erase Character) deletes the last character you typed at
the remote host.
Use this command when the remote host does not recognize your
Delete key.
DCL Format
SEND EC
UNIX Format
send ec
4.1 – Example
% mail <Ctrl/]> (characters not echoed)
TELNET> SEND EC <Return>
Mail $Revision 4.2.4.2 $ Type ? for help.
"/usr/spool/mail/debts": 1 message 1 new
>N 1 debts Tue Sep 15 13:39 8/161 "Team Building"
&
This example:
o Misspells the UNIX mail command.
o Enters the TELNET escape sequence (not echoed to the screen)
to return to the TELNET prompt.
o Enters the TELNET SEND EC command, which deletes the last
character typed (l) and returns to the remote host.
5 – EL
SEND EL (Erase Line) deletes the last line of text you entered on
the remote host.
Use this command when the remote host does not recognize your
Delete key or command-line recall.
DCL Format
SEND EL
UNIX Format
send el
5.1 – Example
% mail <Ctrl/]> (characters not echoed)
TELNET> SEND EL <Return>
% Mail
Mail version 2.18 5/19/83. Type ? for help.
"/usr/spool/mail/finder": 1 message 1 new
>N 1 finder Tue Sep 15 13:39 8/161 "Getting Together"
&
This example:
o Misspells the UNIX Mail command.
o Enters the TELNET SEND EL command, which deletes the
incorrect line mail and returns you to the remote host.
o Enters the Mail command.
6 – GA
SEND GA (Go Ahead) signals the remote host that your local system
is ready.
Some applications require GA commands in either one or both
directions. (Usually, Go Ahead is suppressed, so sending a GA
has no effect.)
DCL Format
SEND GA
UNIX Format
send ga
7 – IP
SEND IP (Interrupt Program) interrupts the execution of the last
command you entered on the remote host. The interrupt character
clears the input and output paths to the remote host. The remote
host interrupts the program that is processing. (This command has
no effect in binary mode.)
Use this command if either your terminal or the remote host does
not recognize the default interrupt character, Ctrl/C.
DCL Format
SEND IP
UNIX Format
send ip
8 – NOP
SEND NOP (No Operation) tells you whether your local host can
send data to the remote host and the remote host can receive the
data. If you:
o Get an %TELNET-E-INETERROR error message, there is a problem
with the connection; the remote host is not able to receive
data.
o Get an %TELNET-S-REMCLOSED status message, the connection with
the remote host has been closed.
o Do not get an error message, the connection is active.
DCL Format
SEND NOP
UNIX Format
send nop
8.1 – Examples
1.% <Ctrl/]> (characters not echoed)
TELNET> SEND NOP <Return>
%TELNET-I-SESSION, Session 01, host nyx, port 23
No error message indicates the connection is active. (The
information message also indicates the connection is active.)
2.% <Ctrl/]> (characters not echoed)
TELNET> SEND NOP
%TELNET-S-REMCLOSED, Remote connection closed
-TELNET-I-SESSION, Session 01, host nyx, port 23
TELNET>
Indicates your connection has been broken.
9 – SYNCH
The SEND SYNCH command clears the communications path between
your local system and the remote host. The SYNCH is sent in
urgent mode (out-of-band, OOB). As a result, the following
actions occur:
1. The local host immediately sends an interrupt character,
placing it at the front of the data stream sent to the remote
host.
2. The remote host immediately processes the interrupt character,
ignoring any incoming data not yet processed, and then
including a TELNET synchronization or interrupt character
in the data stream it sends back to the local host.
3. The local host throws away all incoming data (rather than
processing that data) until it detects the synchronization or
interrupt character. This provides faster response time to the
synchronization and interrupt characters.
DCL Format
SEND SYNCH
UNIX Format
send synch