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.  During the translation some other
     special characters 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.

     -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.

---

Free and Open Source Software