TABS(1)

TABS(1) | General Commands Manual | TABS(1)

# NAME

`tabs` — set terminal tabs

# SYNOPSIS

`tabs` | [`-n`|`-a`|`-a2`|`-c`|`-c2`|`-c3`|`-f`|`-p`|`-s`|`-u`] [+m[n]] [`-T` type]

`tabs` | [`-T` type] [+[n]] n1[,n2,...]

# DESCRIPTION

The `tabs` utility displays a series of characters that first clears the hardware terminal tab settings and then initializes the tab stops at the specified positions and optionally adjusts the margin.

The phrase "tab-stop position N" means that, from the start of a line of output, tabbing to position N shall cause the next character output to be in the (N+1)th column on that line.

The following options are supported:

`-`n
  Specifies repetitive tab stops separated by a uniform number of columns, n, where n is a single digit decimal number. The default usage of `tabs` with no arguments is equivalent to `tabs` `-8`. When `-0` is used, the tab stops are cleared and no new ones set.
`-a`
  Assembler, applicable to some mainframes. Equivalent to `tabs` 1,10,16,36,72 .
`-a2`
  Assembler, applicable to some mainframes. Equivalent to `tabs` 1,10,16,40,72
`-c`
  COBOL, normal format. Equivalent to `tabs` 1,8,12,16,20,55
`-c2`
  COBOL, compact format (columns 1 to 6 omitted). Equivalent to `tabs` 1,6,10,14,49
`-c3`
  COBOL, compact format (columns 1 to 6 omitted), with more tabs than `-c2`. Equivalent to `tabs` 1,6,10,14,18,22,26,30,34,38,42,46,50,54,58,62,67
`-f`
  FORTRAN. Equivalent to `tabs` 1,7,11,15,19,23
`-p`
  PL/1. Equivalent to `tabs` 1,5,9,13,17,21,25,29,33,37,41,45,49,53,57,61
`-s`
  SNOBOL. Equivalent to `tabs` 1,10,55
`-T` type
  Indicates the type of terminal.
`-u`
  Assembler, applicable to some mainframes. Equivalent to `tabs` 1,12,20,44

# ENVIRONMENT

The `COLUMNS` and `TERM` environment variables affect the execution of `tabs` as described in environ(7).

The `-T` option overrides `TERM`. If neither `TERM` nor the `-T` option are present, `tabs` will fail.

# EXIT STATUS

The `tabs` utility exits 0 on success, and >0 if an error occurs.

# SEE ALSO

expand(1), stty(1), tput(1), unexpand(1), terminfo(5)

# STANDARDS

The `tabs` utility conforms to IEEE Std 1003.1 (“POSIX.1”).

# HISTORY

A `tabs` utility first appeared in PWB UNIX. This implementation was introduced in NetBSD 6.0.

# AUTHORS

Roy Marples <roy@NetBSD.org>

April 5, 2012 | NetBSD 11.0