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 /etc/termcap 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 contain-ing appropriate dashes `-'; this is useful when youwant to look at the underlining which is present inan nroff

output stream on a crt-terminal.

  • t terminal

Overrides the terminal type specified in the environ- ment with terminal.


The following environment variable is used


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 termi- nal type specified in /etc/ttys or as set during the login process by the user in their login file (see environ(7)).


colcrt(1), man(1), nroff(1) BUGS

The nroff(1) command usually outputs a series of backspaces and underlines intermixed with the text to indicate under- lining. No attempt is made to optimize the backward motion. HISTORY

The ul command appeared in 3.0 BSD .

BSD June 6, 1993 1

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