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/>

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.

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.

GNU coreutils 8.21                                 March 2016                                          NUMFMT(1)