188 lines
4.0 KiB
Groff
188 lines
4.0 KiB
Groff
.\" $NetBSD: seq.1,v 1.6 2008/11/26 15:03:47 ginsbach Exp $
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.\"
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.\" Copyright (c) 2005 The NetBSD Foundation, Inc.
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.\" All rights reserved.
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.\"
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.\" This code is derived from software contributed to The NetBSD Foundation
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.\" by Brian Ginsbach.
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.\"
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.\" Redistribution and use in source and binary forms, with or without
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.\" modification, are permitted provided that the following conditions
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.\" are met:
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.\" 1. Redistributions of source code must retain the above copyright
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.\" notice, this list of conditions and the following disclaimer.
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.\" 2. Redistributions in binary form must reproduce the above copyright
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.\" notice, this list of conditions and the following disclaimer in the
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.\" documentation and/or other materials provided with the distribution.
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.\"
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.\" THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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.\" ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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.\" TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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.\" PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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.\" BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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.\" CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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.\" SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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.\" INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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.\" CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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.\" ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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.\" POSSIBILITY OF SUCH DAMAGE.
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.\"
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.\" $FreeBSD$
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.\"
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.Dd February 19, 2010
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.Dt SEQ 1
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.Os
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.Sh NAME
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.Nm seq
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.Nd print sequences of numbers
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.Sh SYNOPSIS
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.Nm
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.Op Fl w
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.Op Fl f Ar format
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.Op Fl s Ar string
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.Op Fl t Ar string
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.Op Ar first Op Ar incr
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.Ar last
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.Sh DESCRIPTION
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The
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.Nm
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utility prints a sequence of numbers, one per line
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.Pq default ,
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from
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.Ar first
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.Pq default 1 ,
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to near
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.Ar last
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as possible, in increments of
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.Ar incr
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.Pq default 1 .
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When
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.Ar first
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is larger than
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.Ar last
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the default
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.Ar incr
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is -1.
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.Pp
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All numbers are interpreted as floating point.
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.Pp
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Normally integer values are printed as decimal integers.
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.Pp
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The
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.Nm
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utility accepts the following options:
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.Bl -tag -width Ar
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.It Fl f Ar format
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Use a
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.Xr printf 3
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style
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.Ar format
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to print each number.
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Only the
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.Cm E ,
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.Cm e ,
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.Cm f ,
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.Cm G ,
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.Cm g ,
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and
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.Cm %
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conversion characters are valid, along with any optional
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flags and an optional numeric minimum field width or precision.
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The
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.Ar format
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can contain character escape sequences in backslash notation as
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defined in
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.St -ansiC .
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The default is
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.Cm %g .
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.It Fl s Ar string
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Use
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.Ar string
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to separate numbers.
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The
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.Ar string
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can contain character escape sequences in backslash notation as
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defined in
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.St -ansiC .
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The default is
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.Cm \en .
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.It Fl t Ar string
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Use
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.Ar string
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to terminate sequence of numbers.
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The
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.Ar string
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can contain character escape sequences in backslash notation as
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defined in
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.St -ansiC .
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This option is useful when the default separator
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does not contain a
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.Cm \en .
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.It Fl w
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Equalize the widths of all numbers by padding with zeros as necessary.
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This option has no effect with the
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.Fl f
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option.
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If any sequence numbers will be printed in exponential notation,
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the default conversion is changed to
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.Cm %e .
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.El
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.Pp
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The
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.Nm
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utility exits 0 on success and non-zero if an error occurs.
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.Sh EXAMPLES
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.Bd -literal -offset indent
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# seq 1 3
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1
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2
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3
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# seq 3 1
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3
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2
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1
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# seq -w 0 .05 .1
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0.00
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0.05
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0.10
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.Ed
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.Sh SEE ALSO
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.Xr jot 1 ,
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.Xr printf 1 ,
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.Xr printf 3
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.Sh HISTORY
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The
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.Nm
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command first appeared in
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.Tn "Plan 9 from Bell Labs" .
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A
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.Nm
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command appeared in
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.Nx 3.0 ,
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and ported to
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.Fx 9.0 .
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This command was based on the command of the same name in
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.Tn "Plan 9 from Bell Labs"
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and the
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.Tn GNU
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core utilities.
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The
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.Tn GNU
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.Nm
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command first appeared in the 1.13 shell utilities release.
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.Sh BUGS
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The
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.Fl w
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option does not handle the transition from pure floating point
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to exponent representation very well.
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The
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.Nm
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command is not bug for bug compatible with the
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.Tn "Plan 9 from Bell Labs"
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or
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.Tn GNU
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versions of
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.Nm .
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