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76 lines
2.5 KiB
Plaintext
76 lines
2.5 KiB
Plaintext
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TITLE
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A2osX seq (bin/seq) Command Help
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seq -- print sequences of numbers
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SYNOPSIS
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seq [-f format] [-s string] [-t string] [first [incr]] last
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DESCRIPTION
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The seq utility prints a sequence of numbers, one per line (default), from
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first (default 1), to near last as possible, in increments of incr
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(default 1). When first is larger than last the default incr is -1.
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All numbers are interpreted as integer values.
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PAGE
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The seq utility accepts the following options:
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-f format Use a printf style format to print each number. Only the D, H,
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and I 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 format can contain character escape sequences in backslash
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notation as defined in A2osX kernel documentation.
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The default is \%I.
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-s string Use string to separate numbers. The string can contain
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character escape sequences in backslash notation as defined in
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A2osX kernel documentation. The default is \\r\\n.
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-t string Use string to terminate sequence of numbers. The string can
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contain character escape sequences in backslash notation as
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defined in A2osX kernel documentation. This option is
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useful when the default separator does not contain a \\n.
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The seq utility exits 0 on success and non-zero if an error occurs.
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PAGE
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EXAMPLES
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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 -f "\%02I" 0 5 20
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00
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05
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10
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15
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20
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PAGE
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HISTORY
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The seq command first appeared in Plan 9 from Bell Labs. A seq command
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appeared in NetBSD 3.0, and ported to FreeBSD 9.0. This command was based
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on the command of the same name in Plan 9 from Bell Labs and the GNU core
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utilities. The GNU seq command first appeared in the 1.13 shell utilities
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release. The A2osX seq command was developed by Brian J. Bernstein
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<brian@dronefone.com> in November 2021.
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BUGS
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Floating point numbers are not supported.
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Does not gracefully handle alpha characters where it expects numbers.
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Behavior of seq when it encounters a non-numeric is undefined.
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This version of seq does not support the -w option which automatically
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sets numerical output to identical width. Instead, use the -f option as
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appropriate to get desired results.
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