Linux 2.6 - man page for ul (linux section 1)
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UL(1) BSD General Commands Manual UL(1)
ul -- do underlining
ul [-i] [-t terminal] [file ...]
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 environment variable TERM. The file /etc/termcap is read to deter-
mine the appropriate sequences for underlining. If the terminal is incapable of underlin-
ing, but is capable of a standout mode then that is used instead. If the terminal can over-
strike, or handles underlining automatically, ul degenerates to cat(1). If the terminal
cannot underline, underlining is ignored. During the translation some other special charac-
ters also get translated. E.g. TAB gets expanded to spaces.
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.
Overrides the terminal type specified in the environment with terminal.
The LANG, LC_ALL, LC_CTYPE and TERM environment variables affect the execution of ul as
described in environ(7).
The ul utility exits 0 on success, and >0 if an error occurs.
colcrt(1), man(1), nroff(1)
The ul command appeared in 3.0BSD.
The nroff(1) command usually outputs a series of backspaces and underlines intermixed with
the text to indicate underlining. No attempt is made to optimize the backward motion.
BSD August 4, 2004 BSD
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