NAME
ul —
do underlining
SYNOPSIS
ul |
[-i] [-t
terminal] [name
...] |
DESCRIPTION
ul 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 environment
variable TERM. The file
/usr/share/misc/terminfo is read 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 appropriate dashes `-'; this is useful when you want to look at the underlining which is present in an nroff(1) output stream on a crt-terminal.
-tterminal- Overrides the terminal type specified in the environment with terminal.
ENVIRONMENT
The following environment variable is used:
TERM- The
TERMvariable is used to relate a tty device with its device capability description (see terminfo(5)).TERMis 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 for example csh(1)'ssetenv).
FILES
- /usr/share/misc/terminfo
- File containing terminal descriptions.
SEE ALSO
HISTORY
The ul command appeared in
3.0BSD.
BUGS
nroff(1) usually outputs a series of backspaces and underlines intermixed with the text to indicate underlining. No attempt is made to optimize the backward motion.