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1 | .\" Copyright (c) 1990 The Regents of the University of California. |
2 | .\" All rights reserved. | |
3 | .\" | |
4 | .\" This code is derived from software contributed to Berkeley by | |
5 | .\" Michael Rendell. | |
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 | .\" @(#)col.1 6.8 (Berkeley) 6/17/91 | |
36 | .\" | |
07990fdc | 37 | .TH COL "1" "July 2014" "util-linux" "User Commands" |
9dd5ea62 | 38 | .SH NAME |
1b19ea31 | 39 | col \- filter reverse line feeds from input |
d1daf8e1 SK |
40 | .SH SYNOPSIS |
41 | .B col | |
42 | [options] | |
43 | .SH DESCRIPTION | |
44 | .B col | |
45 | filters out reverse (and half-reverse) line feeds so the output is in the | |
07990fdc BS |
46 | correct order, with only forward and half-forward line feeds. It also replaces |
47 | any whitespace characters with tabs where possible. This can be useful in | |
d1daf8e1 SK |
48 | processing the output of |
49 | .BR nroff (1) | |
6dbe3af9 | 50 | and |
d1daf8e1 SK |
51 | .BR tbl (1). |
52 | .PP | |
53 | .B col | |
6dbe3af9 | 54 | reads from standard input and writes to standard output. |
d1daf8e1 SK |
55 | .SH OPTIONS |
56 | .TP | |
b06c1ca6 | 57 | \fB\-b\fR, \fB\-\-no\-backspaces\fR |
d1daf8e1 SK |
58 | Do not output any backspaces, printing only the last character written to |
59 | each column position. | |
60 | .TP | |
61 | \fB\-f\fR, \fB\-\-fine\fR | |
07990fdc BS |
62 | Permit half-forward line feeds. |
63 | Normally characters destined for a half-line boundary are printed on the | |
d1daf8e1 SK |
64 | following line. |
65 | .TP | |
d1daf8e1 | 66 | \fB\-h\fR, \fB\-\-tabs\fR |
0d196114 | 67 | Output tabs instead of multiple spaces. |
d1daf8e1 | 68 | .TP |
d1daf8e1 | 69 | \fB\-l\fR, \fB\-\-lines\fR \fInumber\fR |
6dbe3af9 | 70 | Buffer at least |
d1daf8e1 SK |
71 | .I number |
72 | lines in memory. By default, 128 lines are buffered. | |
07990fdc BS |
73 | .TP |
74 | \fB\-p\fR, \fB\-\-pass\fR | |
75 | Force unknown control sequences to be passed through unchanged. Normally | |
76 | .B col | |
77 | will filter out any control sequences other than those | |
78 | recognized and interpreted by itself, which are listed below. | |
79 | .TP | |
80 | \fB\-x\fR, \fB\-\-spaces\fR | |
81 | Output multiple spaces instead of tabs. | |
d1daf8e1 SK |
82 | .TP |
83 | \fB\-V\fR, \fB\-\-version\fR | |
b4362b6f | 84 | Display version information and exit. |
d1daf8e1 SK |
85 | .TP |
86 | \fB\-H\fR, \fB\-\-help\fR | |
b4362b6f | 87 | Display help text and exit. |
67e63c12 MK |
88 | .SH CONFORMING TO |
89 | The | |
90 | .B col | |
91 | utility conforms to the Single UNIX Specification, Version 2. The | |
92 | .B \-l | |
93 | option is an extension to the standard. | |
d1daf8e1 | 94 | .SH NOTES |
6dbe3af9 | 95 | The control sequences for carriage motion that |
d1daf8e1 SK |
96 | .B col |
97 | understands and their decimal values are listed in the following table: | |
98 | .PP | |
99 | .RS | |
100 | .PD 0 | |
101 | .TP 18 | |
102 | .B ESC\-7 | |
6dbe3af9 | 103 | reverse line feed (escape then 7) |
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104 | .TP |
105 | .B ESC\-8 | |
6dbe3af9 | 106 | half reverse line feed (escape then 8) |
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107 | .TP |
108 | .B ESC\-9 | |
6dbe3af9 | 109 | half forward line feed (escape then 9) |
d1daf8e1 SK |
110 | .TP |
111 | .B backspace | |
6dbe3af9 | 112 | moves back one column (8); ignored in the first column |
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113 | .TP |
114 | .B newline | |
6dbe3af9 | 115 | forward line feed (10); also does carriage return |
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116 | .TP |
117 | .B carriage return | |
118 | (13) | |
119 | .TP | |
120 | .B shift in | |
6dbe3af9 | 121 | shift to normal character set (15) |
d1daf8e1 SK |
122 | .TP |
123 | .B shift out | |
6dbe3af9 | 124 | shift to alternate character set (14) |
d1daf8e1 SK |
125 | .TP |
126 | .B space | |
6dbe3af9 | 127 | moves forward one column (32) |
d1daf8e1 SK |
128 | .TP |
129 | .B tab | |
6dbe3af9 | 130 | moves forward to next tab stop (9) |
d1daf8e1 SK |
131 | .TP |
132 | .B vertical tab | |
6dbe3af9 | 133 | reverse line feed (11) |
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134 | .PD |
135 | .RE | |
136 | .PP | |
137 | All unrecognized control characters and escape sequences are discarded. | |
138 | .PP | |
139 | .B col | |
140 | keeps track of the character set as characters are read and makes sure the | |
141 | character set is correct when they are output. | |
142 | .PP | |
6dbe3af9 | 143 | If the input attempts to back up to the last flushed line, |
d1daf8e1 | 144 | .B col |
6dbe3af9 | 145 | will display a warning message. |
d1daf8e1 | 146 | .SH HISTORY |
6dbe3af9 | 147 | A |
d1daf8e1 SK |
148 | .B col |
149 | command appeared in Version 6 AT&T UNIX. | |
ade04bb8 MK |
150 | .SH SEE ALSO |
151 | .BR expand (1), | |
152 | .BR nroff (1), | |
153 | .BR tbl (1) | |
d1daf8e1 | 154 | .SH AVAILABILITY |
601d12fb | 155 | The col command is part of the util-linux package and is available from |
d673b74e | 156 | .UR https://\:www.kernel.org\:/pub\:/linux\:/utils\:/util-linux/ |
d1daf8e1 SK |
157 | Linux Kernel Archive |
158 | .UE . |