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User Commands tabs(1)
NAME
tabs - set tabs on a terminal
SYNOPSIS
tabs [ -n | --file [ [-code] | -a | -a2 | -c | -c2 | -c3 |
-f | -p | -s | -u] ] [ +m [n]] [-T type]
tabs [-T type] [ + m [n]] n1 [ , n2 ,...]
DESCRIPTION
The tabs utility sets the tab stops on the user's terminal
according to a tab specification, after clearing any previ-
ous settings. The user's terminal must have remotely sett-
able hardware tabs.
OPTIONS
The following options are supported. If a given flag occurs
more than once, the last value given takes effect:
-T type tabs needs to know the type of terminal in
order to set tabs and margins. type is a
name listed in term(5). If no -T flag is
supplied, tabs uses the value of the
environment variable TERM. If the value of
TERM is NULL or TERM is not defined in the
environment (see environ(5)), tabs uses
ansi+tabs as the terminal type to provide a
sequence that will work for many terminals.
+m[n] The margin argument may be used for some
terminals. It causes all tabs to be moved
over n columns by making column n+1 the left
margin. If +m is given without a value of
n, the value assumed is 10. For a TermiNet,
the first value in the tab list should be 1,
or the margin will move even further to the
right. The normal (leftmost) margin on most
terminals is obtained by +m0. The margin for
most terminals is reset only when the +m
flag is given explicitly.
Tab Specification
Four types of tab specification are accepted. They are
described below: canned, repetitive (-n), arbitrary
(n1,n2,...), and file (-file).
If no tab specification is given, the default value is -8,
that is, UNIX system ``standard'' tabs. The lowest column
SunOS 5.10 Last change: 1 Feb 1995 1
User Commands tabs(1)
number is 1. Note: For tabs, column 1 always refers to the
leftmost column on a terminal, even one whose column markers
begin at 0, for example, the DASI 300, DASI 300s, and DASI
450.
Canned -code
Use one of the codes listed below to select a canned set of
tabs. If more than one code is specified, the last code
option will be used. The legal codes and their meanings are
as follows:
-a 1,10,16,36,72 Assembler, IBM S/370, first format
-a2 1,10,16,40,72
Assembler, IBM S/370, second format
-c 1,8,12,16,20,55
COBOL, normal format
-c2 1,6,10,14,49
COBOL compact format (columns 1-6 omitted). Using
this code, the first typed character corresponds to
card column 7, one space gets you to column 8, and
a tab reaches column 12. Files using this tab setup
should include a format specification as follows
(see fspec(4)):
<:t-c2 m6 s66 d:>
-c3 1,6,10,14,18,22,26,30,34,38,42,46,50,54,58,62,67
COBOL compact format (columns 1-6 omitted), with
more tabs than -c2. This is the recommended format
for COBOL. The appropriate format specification is
(see fspec(4)):
SunOS 5.10 Last change: 1 Feb 1995 2
User Commands tabs(1)
<:t-c3 m6 s66 d:>
-f 1,7,11,15,19,23
FORTRAN
-p 1,5,9,13,17,21,25,29,33,37,41,45,49,53,57,61
PL/I
-s 1,10,55
SNOBOL
-u 1,12,20,44
UNIVAC 1100 Assembler
Repetitive
-n A repetitive specification requests tabs at columns
1+n, 1+2*n, etc., where n is a single-digit decimal
number. Of particular importance is the value 8:
this represents the UNIX system ``standard'' tab
setting, and is the most likely tab setting to be
found at a terminal. When -0 is used, the tab stops
are cleared and no new ones are set.
Arbitrary
See OPERANDS.
File
-file If the name of a file is given, tabs reads
the first line of the file, searching for a
format specification (see fspec(4)). If it
finds one there, it sets the tab stops
according to it, otherwise it sets them as
-8. This type of specification may be used
to make sure that a tabbed file is printed
SunOS 5.10 Last change: 1 Feb 1995 3
User Commands tabs(1)
with correct tab settings, and would be used
with the pr command:
example% tabs - file; pr file
Tab and margin setting is performed via the standard output.
OPERANDS
The following operand is supported:
n1[,n2,...] The arbitrary format consists of tab-stop
values separated by commas or spaces. The
tab-stop values must be positive decimal
integers in ascending order. Up to 40
numbers are allowed. If any number (except
the first one) is preceded by a plus sign,
it is taken as an increment to be added to
the previous value. Thus, the formats
1,10,20,30, and 1,10,+10,+10 are considered
identical.
EXAMPLES
Example 1: Using the tabs command
The following command is an example using -code ( canned
specification) to set tabs to the settings required by the
IBM assembler: columns 1, 10, 16, 36, 72:
example% tabs -a
The next command is an example of using -n (repetitive
specification), where n is 8, causes tabs to be set every
eighth position: 1+(1*8), 1+(2*8), ... which evaluate to
columns 9, 17, ...:
example% tabs -8
This command uses n1,n2,... (arbitrary specification) to set
tabs at columns 1, 8, and 36:
example% tabs 1,8,36
The last command is an example of using -file (file specifi-
cation) to indicate that tabs should be set according to the
first line of $HOME/fspec.list/att4425 (see fspec(4)).
SunOS 5.10 Last change: 1 Feb 1995 4
User Commands tabs(1)
example% tabs -$HOME/fspec.list/att4425
ENVIRONMENT VARIABLES
See environ(5) for descriptions of the following environment
variables that affect the execution of tabs: LANG, LC_ALL,
LC_CTYPE, LC_MESSAGES, and NLSPATH.
TERM Determine the terminal type. If this variable is
unset or null, and if the -T option is not speci-
fied, terminal type ansi+tabs will be used.
EXIT STATUS
The following exit values are returned:
0 Successful completion.
>0 An error occurred.
ATTRIBUTES
See attributes(5) for descriptions of the following attri-
butes:
____________________________________________________________
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
|_____________________________|_____________________________|
| Availability | SUNWcsu |
|_____________________________|_____________________________|
| CSI | Enabled |
|_____________________________|_____________________________|
| Interface Stability | Standard |
|_____________________________|_____________________________|
SEE ALSO
expand(1), newform(1), pr(1), stty(1), tput(1), fspec(4),
terminfo(4), attributes(5), environ(5), term(5), stan-
dards(5)
NOTES
There is no consistency among different terminals regarding
ways of clearing tabs and setting the left margin.
tabs clears only 20 tabs (on terminals requiring a long
sequence), but is willing to set 64.
SunOS 5.10 Last change: 1 Feb 1995 5
User Commands tabs(1)
The tabspec used with the tabs command is different from the
one used with the newform command. For example, tabs -8 sets
every eighth position; whereas newform -i-8 indicates that
tabs are set every eighth position.
SunOS 5.10 Last change: 1 Feb 1995 6
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