8.0;vctl (vt100_control), revision 8.0, 84/03/10
VCTL (VT100_CONTROL) -- Set/display VT100 terminal characteristics.
usage: usage: VCTL [-[NO]CVT_IN_NL] [-[NO]CVT_IN_CR] [-[NO]CVT_OUT_NL]
[-[NO]CVT_OUT_CR] [-[NO]ECHO]
[-[NO]ECHO_CTL] [-[NO]ECHO_ERASE]
[-[NO]ECHO_KILL] [-EOF char]
[-ERASE char] [-INTR char] [-KILL char]
[-QUIT char] [-DEFAULT]
FORMAT
VCTL [options]
VCTL allows you to set or display information about how the VT100 terminal
emulator driver handles input from the keyboard (for example, whether or not
it echoes characters, or how it interprets key sequences typed at the
keyboard.)
This command is valid only if you have the VT100 terminal emulation software
package running on your node. In addition, VCTL can only be run in a window
where the VT100 emulator is already running.
OPTIONS
If no options are specified, the current VT100 settings are displayed.
-DEFAULT Set all options to their default values. This allows you
to quickly reset values to known states.
-[NO]CVT_IN_NL
Convert a newline (linefeed) to a carriage return on input.
The initial setting is -NOCVT_IN_LINE.
-[NO]CVT_IN_CR
Convert a carriage return to a newline on input. The
initial setting is -CVT_IN_CR.
-[NO]CVT_OUT_NL
Convert a newline to carriage return, newline on output.
The initial setting is -CVT_OUT_NL.
-[NO]CVT_OUT_CR
Convert a carriage return to a newline on output. The
initial setting is -NOCVT_OUT_CR.
-[NO]ECHO Turn the echoing of input characters on or off. The
initial setting is ECHO.
-[NO]ECHO_CTL
Turn the echoing of control characters (such as CTRL/Z) on
or off. The initial setting is NOECHO_CTL.
-[NO]ECHO_ERASE
If ECHO is on, controls whether characters are visibly
erased from the screen when the erase character is typed.
The combination of ECHO and NOECHO_ERASE causes the erase
character to be echoed until all characters on a line are
erased. The initial setting is -ECHO_ERASE.
-[NO]ECHO_KILL
If ECHO is on, controls whether a line is visibly erased
from the screen when the line kill character is typed. The
combination of ECHO and NOECHO_KILL causes the kill
character to be echoed and a new line to be displayed. The
initial setting is -ECHO_KILL.
-EOF char Set the end-of-file character. The EOF character is
initially set to CTRL/Z.
-ERASE char Set the erase character. This option is valid only when
data is being passed to the terminal emulator in "cooked"
mode. The 'char' can be any character or one-byte
hexadecimal value. Some characters may require quoting in
the Shell. The erase character is initially set to
BACKSPACE (08 hex).
-INTR char Set the interrupt character, which sends an interrupt fault
to the process group of the terminal emulator. The
interrupt character is initially set to CTRL/C.
-KILL char Set the kill character. This option is valid only when
data is being passed to the emulator in "cooked mode". The
kill character is initially set to CTRL/X.
-QUIT char Set the quit character. The quit character is initially
set to CTRL/Q.
EXAMPLES
1. $ vctl Display current settings.
Erase (character delete) character: "^H" (08 hex)
Kill (line delete) character: "^U" (15 hex)
End of file character: "^Z" (1A hex)
Interrupt character: "^C" (03 hex)
Quit character: "^Q" (11 hex)
Extra break character: FF (hex)
Raw: FALSE, Echo: TRUE, Echo_Erase: TRUE
Echo_Kill: TRUE, Echo_Ctl: FALSE, Cvt_In_CR: TRUE
Cvt_In_NL: FALSE, Cvt_Out_NL: TRUE, Cvt_Out_CR: FALSE
Enable_Sigs: TRUE
$
2. $ vctl -quit 0FE -cvt_out_cr Set quit character to hex FE,
enable conversion of output
newlines to carriage returns.
RELATED TOPICS
More information is available. Type:
- HELP VT100
for information on the VT100 terminal emulator.