VT(1) VT(1)
NAME
vt - emulate a VT-100 or VT-220 terminal
SYNOPSIS
vt [ -2abcx ] [ -f font ] [ -l log ]
DESCRIPTION
Vt replaces a rio window with a fresh instance of the shell,
rc(1), running within an emulation of a DEC VT-100 terminal.
To exit vt, exit the rc it starts.
Options
2
a
x change vt to emulate a VT-220, ANSI, or XTerm terminal
respectively.
b changes the color scheme to white text on a black back-
ground, but potentially with colors from escape
sequences.
c changes the color scheme to monochrome (no colors).
f sets the font.
l names a log file for the session.
Menus
The right button has a menu with the following entries to
provide the sort of character processing expected by non-
Plan 9 systems:
24x80 Resize the vt window to hold 24 rows of 80 columns.
crnl Print a newline (linefeed) character after receiving
a carriage return from the host.
cr Do not print a newline after carriage return.
nlcr Print a carriage return after receiving a newline
from the host.
nl Do not print a carriage return after newline.
raw Enter raw (no echo, no interpretation) character
mode for input.
cooked Leave raw mode.
exit Exit vt.
The middle button has a menu with the following entries:
backup Move the display back one screenful.
forward Move the display forward one screenful. (These
are a poor substitute for a scroll bar.)
reset Display the last screenful; the same as going
forward to the end.
clear Clear the screen. Previous contents can be
recovered using backup.
send Send the contents of the rio snarf buffer, just
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VT(1) VT(1)
as send in the rio menu.
scroll Make new lines visible as they appear at the bot-
tom.
page When the page fills, pause and wait for a charac-
ter to be typed before proceeding. The down
arrow key advances a page without sending the
character to the host.
SOURCE
/sys/src/cmd/vt
BUGS
This program is used only for communicating with foreign
systems, so it is not as rich an emulation as its equivalent
in other environments.
Use care in setting raw and newline modes when connecting to
Unix systems via con(1) or ssh(1). It may also be necessary
to set the emulator into raw mode.
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