numfmt1

Convert numbers from/to human-readable strings

Usage

numfmt [OPTION] ... [NUMBER] ...

Overview

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 for details

--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 for details

--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. This 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 an optional SUFFIX in input numbers

--unit-separator=SEP: insert SEP between number and unit on output, and accept an optional SEP 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, 1k = 1000, 1Ki = 1024, 1M = 1000000, 1Mi = 1048576,

si: accept optional single letter suffix: 1k = 1000, 1K = 1000, 1M = 1000000, ...

iec: accept optional single letter suffix: 1K = 1024, 1k = 1024, 1M = 1048576, ...

iec-i: accept optional two-letter suffix: 1Ki = 1024, 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

Releases

7 releases since Debian 8 (Jessie); the text changed 6 times.

8
9
10
11
12
13
Arch