UL(1) | General Commands Manual | UL(1) |
ul
— do
underlining
ul |
[-i ] [-t
terminal] [name
...] |
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:
The following environment variable is used:
TERM
TERM
variable is used to relate a tty device
with its device capability description (see
terminfo(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 for example
csh(1)'s
setenv
).The ul
command appeared in
3.0BSD.
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.
June 23, 2016 | NetBSD 10.99 |