NUMFMT(1)                     User Commands                     NUMFMT(1)

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=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 automati‐
              cally 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 --pad‐
              ding=10
              $ ls -lh | numfmt --header --field  5  --from=iec  --format
              %10f

AUTHOR
       Written by Assaf Gordon.

REPORTING BUGS
       GNU  coreutils  online  help:  <https://www.gnu.org/software/core‐
       utils/>
       Report   any   translation   bugs   to    <https://translationpro‐
       ject.org/team/>

COPYRIGHT
       Copyright  ©  2020 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.

SEE ALSO
       Full documentation <https://www.gnu.org/software/coreutils/numfmt>
       or available locally via: info '(coreutils) numfmt invocation'

GNU coreutils 8.32              April 2020                      NUMFMT(1)