seq/seq.1

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   6 .\" This code is derived from software contributed to The NetBSD Foundation
   7 .\" by Brian Ginsbach.
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  30 .\" $FreeBSD: src/usr.bin/seq/seq.1,v 1.1 2010/02/19 23:54:12 delphij Exp $
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  32 .Dd February 19, 2010
  33 .Dt SEQ 1
  34 .Os
  35 .Sh NAME
  36 .Nm seq
  37 .Nd print sequences of numbers
  38 .Sh SYNOPSIS
  39 .Nm
  40 .Op Fl w
  41 .Op Fl f Ar format
  42 .Op Fl s Ar string
  43 .Op Fl t Ar string
  44 .Op Ar first Op Ar incr
  45 .Ar last
  46 .Sh DESCRIPTION
  47 The
  48 .Nm
  49 utility prints a sequence of numbers, one per line
  50 .Pq default ,
  51 from
  52 .Ar first
  53 .Pq default 1 ,
  54 to near
  55 .Ar last
  56 as possible, in increments of
  57 .Ar incr
  58 .Pq default 1 .
  59 When
  60 .Ar first
  61 is larger than
  62 .Ar last
  63 the default
  64 .Ar incr
  65 is -1.
  66 .Pp
  67 All numbers are interpreted as floating point.
  68 .Pp
  69 Normally integer values are printed as decimal integers.
  70 .Pp
  71 The
  72 .Nm
  73 utility accepts the following options:
  74 .Bl -tag -width Ar
  75 .It Fl f Ar format
  76 Use a
  77 .Xr printf 3
  78 style
  79 .Ar format
  80 to print each number.
  81 Only the
  82 .Cm E ,
  83 .Cm e ,
  84 .Cm f ,
  85 .Cm G ,
  86 .Cm g ,
  87 and
  88 .Cm %
  89 conversion characters are valid, along with any optional
  90 flags and an optional numeric minimum field width or precision.
  91 The
  92 .Ar format
  93 can contain character escape sequences in backslash notation as
  94 defined in
  95 .St -ansiC .
  96 The default is
  97 .Cm %g .
  98 .It Fl s Ar string
  99 Use
 100 .Ar string
 101 to separate numbers.
 102 The
 103 .Ar string
 104 can contain character escape sequences in backslash notation as
 105 defined in
 106 .St -ansiC .
 107 The default is
 108 .Cm \en .
 109 .It Fl t Ar string
 110 Use
 111 .Ar string
 112 to terminate sequence of numbers.
 113 The
 114 .Ar string
 115 can contain character escape sequences in backslash notation as
 116 defined in
 117 .St -ansiC .
 118 This option is useful when the default separator
 119 does not contain a
 120 .Cm \en .
 121 .It Fl w
 122 Equalize the widths of all numbers by padding with zeros as necessary.
 123 This option has no effect with the
 124 .Fl f
 125 option.
 126 If any sequence numbers will be printed in exponential notation,
 127 the default conversion is changed to
 128 .Cm %e .
 129 .El
 130 .Pp
 131 The
 132 .Nm
 133 utility exits 0 on success and non-zero if an error occurs.
 134 .Sh EXAMPLES
 135 .Bd -literal -offset indent
 136 # seq 1 3
 137 1
 138 2
 139 3
 140
 141 # seq 3 1
 142 3
 143 2
 144 1
 145
 146 # seq -w 0 .05 .1
 147 0.00
 148 0.05
 149 0.10
 150 .Ed
 151 .Sh SEE ALSO
 152 .Xr jot 1 ,
 153 .Xr printf 1 ,
 154 .Xr printf 3
 155 .Sh HISTORY
 156 The
 157 .Nm
 158 command first appeared in
 159 .Tn "Plan 9 from Bell Labs" .
 160 A
 161 .Nm
 162 command appeared in
 163 .Nx 3.0 ,
 164 and ported to
 165 .Fx 9.0 .
 166 This command was based on the command of the same name in
 167 .Tn "Plan 9 from Bell Labs"
 168 and the
 169 .Tn GNU
 170 core utilities.
 171 The
 172 .Tn GNU
 173 .Nm
 174 command first appeared in the 1.13 shell utilities release.
 175 .Sh BUGS
 176 The
 177 .Fl w
 178 option does not handle the transition from pure floating point
 179 to exponent representation very well.
 180 The
 181 .Nm
 182 command is not bug for bug compatible with the
 183 .Tn "Plan 9 from Bell Labs"
 184 or
 185 .Tn GNU
 186 versions of
 187 .Nm .