seq

output a sequences of numbers

seq [-w] [-f format] [-s string] [-t string] [first [incr]] last

Outpus a sequence of numbers, one per line (default), from first (default 1), to near last as possible, in increments of incr (default 1). When first is larger than last, the default incr is -1.

Normally integer values are output as decimal integers.
All numbers are interpreted as floating point.

-f format
--format format		 Use a printf(3) style format to output each number. Only the A, a, E, e, F, f, G, g, and % 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 %g.
-s string
--separator string		 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 \n.
-t string
--terminator string		 Use string to terminate sequence of numbers. The string can contain character escape sequences in backslash notation as defined in ANSI X3.159-1989 ("ANSI C89").
Useful when the default separator does not contain a \n.
-w
--fixed-width		 Equalize the widths of all numbers by padding with zeros .
Has no effect with -f . If any sequence numbers will be printed in exponential notation, the default conversion is changed to %e.

Exit status

0 on success, and >0 if an error occurs.

EXAMPLES

Generate a sequence from 1 to 3 (included) with a default increment of 1: 
# seq 1 3
           1
           2
           3
Generate a sequence from 3 to 1 (included) with a default increment of -1: 
# seq 3 1
           3
           2
           1
Generate a sequence from 0 to 0.1 (included) 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 (included) with a default increment of 1, a custom separator string and a custom terminator: 
# seq -s "-->" -t "[end of list]\n" 1 3
           1-->2-->3-->[end of list]
Generate a sequence from 1 to 2 (included) 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

See

jot, printf, printf BUGS The -w option does not handle the transition from pure floating point to exponent representation very well.
The seq command is not bug for bug compatible with other implementations. macOS 12.6 June 20, 2020