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NAME | SYNOPSIS | DESCRIPTION | EXAMPLES | AUTHOR | REPORTING BUGS | COPYRIGHT | SEE ALSO | COLOPHON |
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NUMFMT(1) User Commands NUMFMT(1)
numfmt - Convert numbers from/to human-readable strings
numfmt [OPTION]... [NUMBER]...
Reformat NUMBER(s), or the numbers from standard input if none
are specified.
Mandatory arguments to long options are mandatory for short
options too.
--debug
print warnings about invalid input
-d, --delimiter=X
use X instead of whitespace for field delimiter
--field=FIELDS
replace the numbers in these input fields (default=1); see
FIELDS below
--format=FORMAT
use printf style floating-point FORMAT; see FORMAT below
for details
--from=UNIT
auto-scale input numbers to UNITs; default is 'none'; see
UNIT below
--from-unit=N
specify the input unit size (instead of the default 1)
--grouping
use locale-defined grouping of digits, e.g. 1,000,000
(which means it has no effect in the C/POSIX locale)
--header[=N]
print (without converting) the first N header lines; N
defaults to 1 if not specified
--invalid=MODE
failure mode for invalid numbers: MODE can be: abort
(default), fail, warn, ignore
--padding=N
pad the output to N characters; positive N will
right-align; negative N will left-align; padding is
ignored if the output is wider than N; the default is to
automatically pad if a whitespace is found
--round=METHOD
use METHOD for rounding when scaling; METHOD can be: up,
down, from-zero (default), towards-zero, nearest
--suffix=SUFFIX
add SUFFIX to output numbers, and accept optional SUFFIX
in input numbers
--to=UNIT
auto-scale output numbers to UNITs; see UNIT below
--to-unit=N
the output unit size (instead of the default 1)
-z, --zero-terminated
line delimiter is NUL, not newline
--help display this help and exit
--version
output version information and exit
UNIT options:
none no auto-scaling is done; suffixes will trigger an error
auto accept optional single/two letter suffix:
1K = 1000, 1Ki = 1024, 1M = 1000000, 1Mi = 1048576,
si accept optional single letter suffix:
1K = 1000, 1M = 1000000, ...
iec accept optional single letter suffix:
1K = 1024, 1M = 1048576, ...
iec-i accept optional two-letter suffix:
1Ki = 1024, 1Mi = 1048576, ...
FIELDS supports cut(1) style field ranges:
N N'th field, counted from 1
N- from N'th field, to end of line
N-M from N'th to M'th field (inclusive)
-M from first to M'th field (inclusive)
- all fields
Multiple fields/ranges can be separated with commas
FORMAT must be suitable for printing one floating-point argument
'%f'. Optional quote (%'f) will enable --grouping (if supported
by current locale). Optional width value (%10f) will pad output.
Optional zero (%010f) width will zero pad the number. Optional
negative values (%-10f) will left align. Optional precision
(%.1f) will override the input determined precision.
Exit status is 0 if all input numbers were successfully
converted. By default, numfmt will stop at the first conversion
error with exit status 2. With --invalid='fail' a warning is
printed for each conversion error and the exit status is 2. With
--invalid='warn' each conversion error is diagnosed, but the exit
status is 0. With --invalid='ignore' conversion errors are not
diagnosed and the exit status is 0.
$ numfmt --to=si 1000
-> "1.0K"
$ numfmt --to=iec 2048
-> "2.0K"
$ numfmt --to=iec-i 4096
-> "4.0Ki"
$ echo 1K | numfmt --from=si
-> "1000"
$ echo 1K | numfmt --from=iec
-> "1024"
$ df -B1 | numfmt --header --field 2-4 --to=si
$ ls -l | numfmt --header --field 5 --to=iec
$ ls -lh | numfmt --header --field 5 --from=iec
--padding=10
$ ls -lh | numfmt --header --field 5 --from=iec --format
%10f
Written by Assaf Gordon.
GNU coreutils online help:
<https://www.gnu.org/software/coreutils/>
Report any translation bugs to
<https://translationproject.org/team/>
Copyright © 2023 Free Software Foundation, Inc. License GPLv3+:
GNU GPL version 3 or later <https://gnu.org/licenses/gpl.html>.
This is free software: you are free to change and redistribute
it. There is NO WARRANTY, to the extent permitted by law.
Full documentation
<https://www.gnu.org/software/coreutils/numfmt>
or available locally via: info '(coreutils) numfmt invocation'
This page is part of the coreutils (basic file, shell and text
manipulation utilities) project. Information about the project
can be found at ⟨http://www.gnu.org/software/coreutils/⟩. If you
have a bug report for this manual page, see
⟨http://www.gnu.org/software/coreutils/⟩. This page was obtained
from the tarball coreutils-9.4.tar.xz fetched from
⟨http://ftp.gnu.org/gnu/coreutils/⟩ on 2023-12-22. If you
discover any rendering problems in this HTML version of the page,
or you believe there is a better or more up-to-date source for
the page, or you have corrections or improvements to the
information in this COLOPHON (which is not part of the original
manual page), send a mail to man-pages@man7.org
GNU coreutils 9.4 August 2023 NUMFMT(1)
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HTML rendering created 2023-12-22 by Michael Kerrisk, author of The Linux Programming Interface. For details of in-depth Linux/UNIX system programming training courses that I teach, look here. Hosting by jambit GmbH. |
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