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29 * @Id: tabs.1,v 1.14 2016/10/22 19:54:35 tom Exp @
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41 <H1 class="no-header">tabs 1</H1>
43 <STRONG><A HREF="tabs.1.html">tabs(1)</A></STRONG> <STRONG><A HREF="tabs.1.html">tabs(1)</A></STRONG>
48 </PRE><H2><a name="h2-NAME">NAME</a></H2><PRE>
49 <STRONG>tabs</STRONG> - set tabs on a terminal
52 </PRE><H2><a name="h2-SYNOPSIS">SYNOPSIS</a></H2><PRE>
53 <STRONG>tabs</STRONG> [<EM>options</EM>]] <EM>[tabstop-list]</EM>
56 </PRE><H2><a name="h2-DESCRIPTION">DESCRIPTION</a></H2><PRE>
57 The <STRONG>tabs</STRONG> program clears and sets tab-stops on the termi-
58 nal. This uses the terminfo <EM>clear</EM><STRONG>_</STRONG><EM>all</EM><STRONG>_</STRONG><EM>tabs</EM> and <EM>set</EM><STRONG>_</STRONG><EM>tab</EM>
59 capabilities. If either is absent, <STRONG>tabs</STRONG> is unable to
60 clear/set tab-stops. The terminal should be configured to
66 </PRE><H2><a name="h2-OPTIONS">OPTIONS</a></H2><PRE>
68 </PRE><H3><a name="h3-General-Options">General Options</a></H3><PRE>
69 <STRONG>-T</STRONG><EM>name</EM>
70 Tell <STRONG>tabs</STRONG> which terminal type to use. If this option
71 is not given, <STRONG>tabs</STRONG> will use the <STRONG>$TERM</STRONG> environment
72 variable. If that is not set, it will use the
73 <EM>ansi+tabs</EM> entry.
75 <STRONG>-d</STRONG> The debugging option shows a ruler line, followed by
76 two data lines. The first data line shows the
77 expected tab-stops marked with asterisks. The second
78 data line shows the actual tab-stops, marked with
81 <STRONG>-n</STRONG> This option tells <STRONG>tabs</STRONG> to check the options and run
82 any debugging option, but not to modify the terminal
85 <STRONG>-V</STRONG> reports the version of ncurses which was used in this
88 The <STRONG>tabs</STRONG> program processes a single list of tab stops.
89 The last option to be processed which defines a list is
90 the one that determines the list to be processed.
93 </PRE><H3><a name="h3-Implicit-Lists">Implicit Lists</a></H3><PRE>
94 Use a single number as an option, e.g., "<STRONG>-5</STRONG>" to set tabs
95 at the given interval (in this case 1, 6, 11, 16, 21,
96 etc.). Tabs are repeated up to the right margin of the
99 Use "<STRONG>-0</STRONG>" to clear all tabs.
101 Use "<STRONG>-8</STRONG>" to set tabs to the standard interval.
104 </PRE><H3><a name="h3-Explicit-Lists">Explicit Lists</a></H3><PRE>
105 An explicit list can be defined after the options (this
106 does not use a "-"). The values in the list must be in
107 increasing numeric order, and greater than zero. They are
108 separated by a comma or a blank, for example,
112 Use a '+' to treat a number as an increment relative to
113 the previous value, e.g.,
117 which is equivalent to the 1,6,11,16,21 example.
120 </PRE><H3><a name="h3-Predefined-Tab-Stops">Predefined Tab-Stops</a></H3><PRE>
121 X/Open defines several predefined lists of tab stops.
123 <STRONG>-a</STRONG> Assembler, IBM S/370, first format
125 <STRONG>-a2</STRONG> Assembler, IBM S/370, second format
127 <STRONG>-c</STRONG> COBOL, normal format
129 <STRONG>-c2</STRONG> COBOL compact format
131 <STRONG>-c3</STRONG> COBOL compact format extended
133 <STRONG>-f</STRONG> FORTRAN
135 <STRONG>-p</STRONG> PL/I
137 <STRONG>-s</STRONG> SNOBOL
139 <STRONG>-u</STRONG> UNIVAC 1100 Assembler
142 </PRE><H2><a name="h2-PORTABILITY">PORTABILITY</a></H2><PRE>
143 IEEE Std 1003.1/The Open Group Base Specifications Issue
144 7 (POSIX.1-2008) describes a <STRONG>tabs</STRONG> utility. However
146 <STRONG>o</STRONG> This standard describes a <STRONG>+m</STRONG> option, to set a termi-
147 nal's left-margin. Very few of the entries in the
148 terminal database provide this capability.
150 <STRONG>o</STRONG> There is no counterpart in X/Open Curses Issue 7 for
151 this utility, unlike <STRONG>tput(1)</STRONG>.
153 The <STRONG>-d</STRONG> (debug) and <STRONG>-n</STRONG> (no-op) options are extensions not
154 provided by other implementations.
156 Documentation for other implementations states that there
157 is a limit on the number of tab stops. While some termi-
158 nals may not accept an arbitrary number of tab stops, this
159 implementation will attempt to set tab stops up to the
160 right margin of the screen, if the given list happens to
164 </PRE><H2><a name="h2-SEE-ALSO">SEE ALSO</a></H2><PRE>
165 <STRONG><A HREF="tset.1.html">tset(1)</A></STRONG>, <STRONG><A HREF="infocmp.1m.html">infocmp(1m)</A></STRONG>, <STRONG><A HREF="ncurses.3x.html">curses(3x)</A></STRONG>, <STRONG><A HREF="terminfo.5.html">terminfo(5)</A></STRONG>.
167 This describes <STRONG>ncurses</STRONG> version 6.0 (patch 20161224).
171 <STRONG><A HREF="tabs.1.html">tabs(1)</A></STRONG>
175 <li><a href="#h2-NAME">NAME</a></li>
176 <li><a href="#h2-SYNOPSIS">SYNOPSIS</a></li>
177 <li><a href="#h2-DESCRIPTION">DESCRIPTION</a></li>
178 <li><a href="#h2-OPTIONS">OPTIONS</a>
180 <li><a href="#h3-General-Options">General Options</a></li>
181 <li><a href="#h3-Implicit-Lists">Implicit Lists</a></li>
182 <li><a href="#h3-Explicit-Lists">Explicit Lists</a></li>
183 <li><a href="#h3-Predefined-Tab-Stops">Predefined Tab-Stops</a></li>
186 <li><a href="#h2-PORTABILITY">PORTABILITY</a></li>
187 <li><a href="#h2-SEE-ALSO">SEE ALSO</a></li>