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

       Mandatory arguments to long options are  mandatory  for  short  options

              print warnings about invalid input

       -d, --delimiter=X
              use X instead of whitespace for field delimiter

              replace the numbers in these input fields (default=1) see FIELDS

              use printf style floating-point FORMAT;  see  FORMAT  below  for

              auto-scale  input  numbers to UNITs; default is 'none'; see UNIT

              specify the input unit size (instead of the default 1)

              use locale-defined grouping of  digits,  e.g.  1,000,000  (which
              means it has no effect in the C/POSIX locale)

              print  (without converting) the first N header lines; N defaults
              to 1 if not specified

              failure mode for invalid numbers: MODE can be: abort  (default),
              fail, warn, ignore

              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 white-
              space is found

              use METHOD for rounding when scaling; METHOD can be:  up,  down,
              from-zero (default), towards-zero, nearest

              add  SUFFIX  to  output  numbers,  and accept optional SUFFIX in
              input numbers

              auto-scale output numbers to UNITs; see UNIT below

              the output unit size (instead of the default 1)

       -z, --zero-terminated
              line delimiter is NUL, not newline

       --help display this help and exit

              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  sta-
       tus  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: <>
       Report numfmt translation bugs to <>

       Copyright (C) 2017 Free Software Foundation, Inc.  License GPLv3+:  GNU
       GPL version 3 or later <>.
       This  is  free  software:  you  are free to change and redistribute it.
       There is NO WARRANTY, to the extent permitted by law.

       Full documentation at: <>
       or available locally via: info '(coreutils) numfmt invocation'

GNU coreutils 8.28               January 2018                        NUMFMT(1)
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