NAME
seq —
print sequences of numbers
SYNOPSIS
seq |
[-w]
[-f
format]
[-s
string]
[-t
string]
[first
[incr]]
last |
DESCRIPTION
The
seq utility prints 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.
All numbers are interpreted as floating point.
Normally integer values are printed as decimal integers.
The
seq utility accepts the following options:
-
-
- -f
format
- Use a
printf(3) style
format to print 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 mimimum 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
- 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
- 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”). This option is useful
when the default separator does not contain a \n.
-
-
- -w
- Equalize the widths of all numbers by padding with zeros as
necessary. This option has no effect with the -f option.
If any sequence numbers will be printed in exponential notation, the
default conversion is changed to %e.
EXIT STATUS
The
seq utility exits 0 on success, and >0 if an
error occurs.
EXAMPLES
# seq 1 3
1
2
3
# seq 3 1
3
2
1
# seq -w 0 .05 .1
0.00
0.05
0.10
SEE ALSO
jot(1),
printf(1),
printf(3)
HISTORY
The
seq command first appeared in Version 8
AT&T UNIX. A
seq command
appeared in
NetBSD 3.0. This command 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.
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.