Annotation of src/usr.bin/ul/ul.1, Revision 1.3
1.3 ! aaron 1: .\" $OpenBSD: ul.1,v 1.2 1996/06/26 05:42:04 deraadt Exp $
1.1 deraadt 2: .\" $NetBSD: ul.1,v 1.3 1994/12/07 00:28:23 jtc Exp $
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35: .\" @(#)ul.1 8.1 (Berkeley) 6/6/93
36: .\"
37: .Dd June 6, 1993
38: .Dt UL 1
39: .Os BSD 4
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
1.3 ! aaron 49: .Nm ul
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,
62: .Nm ul
63: degenerates to
64: .Xr cat 1 .
65: If the terminal cannot underline, underlining is ignored.
66: .Pp
67: The following options are available:
68: .Bl -tag -width Ds
69: .It Fl i
70: Underlining is indicated by a separate line containing appropriate
71: dashes `\-'; this is useful when you want to look at the underlining
72: which is present in an
1.3 ! aaron 73: .Xr nroff 1
1.1 deraadt 74: output stream on a crt-terminal.
75: .It Fl t Ar terminal
76: Overrides the terminal type specified in the environment with
77: .Ar terminal .
78: .El
79: .Sh ENVIRONMENT
80: The following environment variable is used:
81: .Bl -tag -width TERM
82: .It Ev TERM
83: The
84: .Ev TERM
85: variable is used to relate a tty device
86: with its device capability description (see
87: .Xr termcap 5 ) .
88: .Ev TERM
89: is set at login time, either by the default terminal type
90: specified in
91: .Pa /etc/ttys
92: or as set during the login process by the user in their
93: .Pa login
94: file (see
95: .Xr setenv 1 ) .
96: .El
97: .Sh SEE ALSO
1.3 ! aaron 98: .Xr colcrt 1 ,
1.1 deraadt 99: .Xr man 1 ,
1.3 ! aaron 100: .Xr nroff 1
1.1 deraadt 101: .Sh BUGS
1.3 ! aaron 102: .Xr nroff 1
1.1 deraadt 103: usually outputs a series of backspaces and underlines intermixed
104: with the text to indicate underlining. No attempt is made to optimize
105: the backward motion.
106: .Sh HISTORY
107: The
108: .Nm
109: command appeared in
110: .Bx 3.0 .