UL linux command manual

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

     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 terminfo database is read to determine the appropri-
     ate sequences for underlining.  If the terminal is incapable of under-
     lining, 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

     The following options are available:

     -i      Underlining is indicated by a separate line containing appropri-
             ate dashes '-'; this is useful when you want to look at the
             underlining which is present in an nroff output stream on a crt-

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

     The following environment variable is used:

     TERM  The TERM variable is used to relate a tty device with its device
           capability description (see terminfo(5)).  TERM is set at login
           time, either by the default terminal type specified in /etc/ttys
           or as set during the login process by the user in their login file
           (see setenv(1)).

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

     Nroff usually outputs a series of backspaces and underlines intermixed
     with the text to indicate underlining.  No attempt is made to optimize
     the backward motion.

     The ul command appeared in 3.0BSD.

4th Berkeley Distribution        June 6, 1993       4th Berkeley Distribution