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Annotation of src/usr.bin/ul/ul.1, Revision 1.7

1.7     ! aaron       1: .\"    $OpenBSD: ul.1,v 1.6 2000/03/11 21:40:06 aaron Exp $
1.1       deraadt     2: .\"    $NetBSD: ul.1,v 1.3 1994/12/07 00:28:23 jtc Exp $
                      3: .\"
                      4: .\" Copyright (c) 1980, 1991, 1993
                      5: .\"    The Regents of the University of California.  All rights reserved.
                      6: .\"
                      7: .\" Redistribution and use in source and binary forms, with or without
                      8: .\" modification, are permitted provided that the following conditions
                      9: .\" are met:
                     10: .\" 1. Redistributions of source code must retain the above copyright
                     11: .\"    notice, this list of conditions and the following disclaimer.
                     12: .\" 2. Redistributions in binary form must reproduce the above copyright
                     13: .\"    notice, this list of conditions and the following disclaimer in the
                     14: .\"    documentation and/or other materials provided with the distribution.
                     15: .\" 3. All advertising materials mentioning features or use of this software
                     16: .\"    must display the following acknowledgement:
                     17: .\"    This product includes software developed by the University of
                     18: .\"    California, Berkeley and its contributors.
                     19: .\" 4. Neither the name of the University nor the names of its contributors
                     20: .\"    may be used to endorse or promote products derived from this software
                     21: .\"    without specific prior written permission.
                     22: .\"
                     23: .\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
                     24: .\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
                     25: .\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
                     26: .\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
                     27: .\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
                     28: .\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
                     29: .\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
                     30: .\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
                     31: .\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
                     32: .\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
                     33: .\" SUCH DAMAGE.
                     34: .\"
                     35: .\"     @(#)ul.1       8.1 (Berkeley) 6/6/93
                     36: .\"
                     37: .Dd June 6, 1993
                     38: .Dt UL 1
1.4       aaron      39: .Os
1.1       deraadt    40: .Sh NAME
                     41: .Nm ul
                     42: .Nd do underlining
                     43: .Sh SYNOPSIS
                     44: .Nm ul
                     45: .Op Fl i
                     46: .Op Fl t Ar terminal
                     47: .Op Ar name Ar ...
                     48: .Sh DESCRIPTION
1.5       aaron      49: .Nm
1.1       deraadt    50: reads the named files (or standard input if none are given)
                     51: and translates occurrences of underscores to the sequence
                     52: which indicates underlining for the terminal in use, as specified
                     53: by the environment variable
                     54: .Ev TERM .
                     55: The file
                     56: .Pa /etc/termcap
                     57: is read to determine the appropriate sequences for underlining.
                     58: If the terminal is incapable of underlining, but is capable of
1.3       aaron      59: a standout mode, then that is used instead.
1.1       deraadt    60: If the terminal can overstrike,
                     61: or handles underlining automatically,
1.5       aaron      62: .Nm
1.1       deraadt    63: degenerates to
                     64: .Xr cat 1 .
                     65: If the terminal cannot underline, underlining is ignored.
                     66: .Pp
1.5       aaron      67: The options are as follows:
1.1       deraadt    68: .Bl -tag -width Ds
                     69: .It Fl i
                     70: Underlining is indicated by a separate line containing appropriate
1.6       aaron      71: dashes
                     72: .Pq Ql - ;
                     73: this is useful when you want to look at the underlining
1.1       deraadt    74: which is present in an
1.3       aaron      75: .Xr nroff 1
1.1       deraadt    76: output stream on a crt-terminal.
                     77: .It Fl t Ar terminal
                     78: Overrides the terminal type specified in the environment with
                     79: .Ar terminal .
                     80: .El
                     81: .Sh ENVIRONMENT
1.6       aaron      82: The following environment variables affect the execution of
                     83: .Nm ul :
1.1       deraadt    84: .Bl -tag -width TERM
                     85: .It Ev TERM
1.6       aaron      86: Used to relate a tty device
1.1       deraadt    87: with its device capability description (see
                     88: .Xr termcap 5 ) .
                     89: .Ev TERM
                     90: is set at login time, either by the default terminal type
                     91: specified in
                     92: .Pa /etc/ttys
                     93: or as set during the login process by the user in their
                     94: .Pa login
                     95: file (see
1.4       aaron      96: .Xr setenv 1 ) .
1.1       deraadt    97: .El
                     98: .Sh SEE ALSO
1.3       aaron      99: .Xr colcrt 1 ,
1.1       deraadt   100: .Xr man 1 ,
1.3       aaron     101: .Xr nroff 1
1.7     ! aaron     102: .Sh HISTORY
        !           103: The
        !           104: .Nm
        !           105: command appeared in
        !           106: .Bx 3.0 .
1.1       deraadt   107: .Sh BUGS
1.3       aaron     108: .Xr nroff 1
1.1       deraadt   109: usually outputs a series of backspaces and underlines intermixed
1.6       aaron     110: with the text to indicate underlining.
                    111: No attempt is made to optimize the backward motion.