print sequences of numbers
seq utility prints a sequence of
numbers, one per line by default, from first (default
1) to as near last as possible, in increments of
incr (default 1). When first is
larger than last, the default
incr is -1.
All numbers are interpreted as floating point.
Normally, integer values are printed as decimal integers.
seq utility accepts the following
- Use a printf(3) style format to print each number.
%conversion characters are valid, along with any optional flags and an optional numeric minimum field width or precision. The format can contain character escape sequences in backslash notation as defined in ANSI X3.159-1989 (“ANSI C89”). The default is
- Use string to separate numbers. The
string can contain character escape sequences in
backslash notation as defined in ANSI X3.159-1989
(“ANSI C89”). The default is
- Equalize the widths of all numbers by padding with zeros as necessary.
This option has no effect with the
-foption. If any sequence numbers will be printed in exponential notation, the default conversion is changed to
- Display the program usage and exit.
- Display the version number and exit.
seq utility exits 0 on success,
and >0 if an error occurs.
Generate a sequence from 1 to 3 (inclusive) with a default increment of 1:
$ seq 1 3 1 2 3
Generate a sequence from 3 to 1 (inclusive) with a default increment of -1:
$ seq 3 1 3 2 1
Generate a sequence from 0 to 0.1 (inclusive) with an increment of 0.05 and padding with leading zeroes:
$ seq -w 0 .05 .1 0.00 0.05 0.10
Generate a sequence from 1 to 3 (inclusive) with a default increment of 1, and a custom separator string:
$ seq -s "," 1 3 1,2,3
Generate a sequence from 1 to 2 (inclusive) with an increment of 0.2 and print the results with two digits after the decimal point (using a printf(3) style format):
$ seq -f %.2f 1 0.2 2 1.00 1.20 1.40 1.60 1.80 2.00
jot(1), printf(1), printf(3)
seq command appeared in Version 8
AT&T UNIX. This version of
seq appeared in NetBSD 3.0
and was ported to OpenBSD 7.1. It was based on the
command of the same name in Plan 9 from Bell Labs and the GNU core
utilities. The GNU
seq command first appeared in the
1.13 shell utilities release.
-w option does not handle the
transition from pure floating point to exponent representation very well.
seq utility is not bug for bug compatible with