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 /etc/termcap is read to determine the appropriate sequences
for underlining. If the terminal is incapable of
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 options are as follows:
-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 CRTterminal.
Overrides the terminal type specified in the environment with
TERM Used to relate a tty device with its device capability
(see termcap(5)). TERM is set at login time, either
by the default
terminal type specified in /etc/ttys or as set during
process by the user in their login file (see environ(7)).
colcrt(1), man(1), nroff(1)
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
the backward motion.
OpenBSD 3.6 June 6, 1993
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