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  4. numfmt(1)

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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.

print warnings about invalid input
use X instead of whitespace for field delimiter
replace the number in input field N (default is 1)
use printf style floating-point FORMAT; see FORMAT below for details
auto-scale input numbers to UNITs; default is 'none'; see UNIT below
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 whitespace 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)
display this help and exit
output version information and exit

UNIT options:

no auto-scaling is done; suffixes will trigger an error
accept optional single/two letter suffix:
1K = 1000, 1Ki = 1024, 1M = 1000000, 1Mi = 1048576,
accept optional single letter suffix:
1K = 1000, 1M = 1000000, ...
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

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

AUTHOR

Written by Assaf Gordon.

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.

November 2020 GNU coreutils 8.22