UL(1) BSD General Commands Manual UL(1)
NAME
ul - do underlining
SYNOPSIS
ul [-i] [-t terminal] [name ...]
DESCRIPTION
The ul utility reads the named files (or standard input if none are
given) and translates occurrences of underscores to the sequence which
indicates underlining for the terminal in use, as specified by the envi
ronment variable TERM. The ncurses(3) library is used to determine the
appropriate sequences for underlining. If the terminal is incapable of
underlining, but is capable of a standout mode then that is used instead.
If the terminal can overstrike, or handles underlining automatically, ul
degenerates to cat(1). If the terminal cannot underline, underlining is
ignored.
The following options are available:
-i Underlining is indicated by a separate line containing appropri
ate dashes -; this is useful when you want to look at the
underlining which is present in an nroff output stream on a crt-
terminal.
-t terminal
Overrides the terminal type specified in the environment with
terminal.
ENVIRONMENT
The following environment variable is used:
TERM The TERM variable is used to relate a tty device with its device
capability description (see termcap(5)). TERM is set at login
time, either by the default terminal type specified in /etc/ttys or
as set during the login process by the user in their login file
(see environ(7)).
SEE ALSO
colcrt(1), man(1), nroff(1)
BUGS
The nroff(1) command usually outputs a series of backspaces and under
lines intermixed with the text to indicate underlining. No attempt is
made to optimize the backward motion.
HISTORY
The ul command appeared in 3.0BSD.
BSD October 30, 2003 BSD
|