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Man Pages


Manual Reference Pages  -  GNUMFMT (1)

NAME

numfmt - Convert numbers from/to human-readable strings

CONTENTS

Synopsis
Description
Examples
Author
Copyright

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=\,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.

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 -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

AUTHOR

Written by Assaf Gordon.

REPORTING BUGS

GNU coreutils online help: <http://www.gnu.org/software/coreutils/>
Report numfmt translation bugs to <http://translationproject.org/team/>

COPYRIGHT

Copyright © 2016 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.

SEE ALSO

Full documentation at: <http://www.gnu.org/software/coreutils/numfmt>
or available locally via: info \(aq(coreutils) numfmt invocation\(aq
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GNU coreutils 8.25 NUMFMT (1) January 2016

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