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UL(1)                     BSD General Commands Manual                    UL(1)

NAME
     ul -- do underlining

SYNOPSIS
     ul [-i] [-t terminal] [file ...]

DESCRIPTION
     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 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.

     -t terminal
             Overrides the terminal type specified in the environment with terminal.

ENVIRONMENT
     The LANG, LC_ALL, LC_CTYPE and TERM environment variables affect the execution of ul as described in
     environ(7).

EXIT STATUS
     The ul utility exits 0 on success, and >0 if an error occurs.

SEE ALSO
     colcrt(1), man(1), nroff(1)

HISTORY
     The ul command appeared in 3.0BSD.

BUGS
     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