Linux manual pages Section 1: General Commands  

Name

numfmt — Convert numbers from/to human-readable strings

Synopsis

numfmt [OPTION...] [NUMBER...]

DESCRIPTION

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=N

replace the number in input field N (default is 1)

−−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)

−−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, ...

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 negative width values (%−10f) will left−pad output.

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.

EXAMPLES

$ 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 | numfmt --header --field 2 --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

AUTHOR

Written by Assaf Gordon.

REPORTING BUGS

Report numfmt bugs to bug−coreutils@gnu.org

GNU coreutils home page: <http://www.gnu.org/software/coreutils/>

General help using GNU software: <http://www.gnu.org/gethelp/>

Report numfmt translation bugs to <http://translationproject.org/team/>

SEE ALSO

The full documentation for numfmt is maintained as a Texinfo manual. If the info and numfmt programs are properly installed at your site, the command

  • info coreutils 'numfmt invocation'

should give you access to the complete manual.

COPYRIGHT

Copyright © 2013 Free Software Foundation, Inc. License GPLv3+: GNU GPL version 3 or later <http://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.