numfmt
Convert numbers from/to human-readable strings
TLDR
Convert 1.5K (SI Units) to 1500
Convert 5th field (1-indexed) to IEC Units without converting header
Convert to IEC units, pad with 5 characters, left aligned
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 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)
- -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 --padding=10
$ ls -lh | numfmt --header --field 5 --from=iec --format %10f
REPORTING BUGS
GNU coreutils online help:
<https://www.gnu.org/software/coreutils/>
Report any translation bugs to
<https://translationproject.org/team/>
COPYRIGHT
Copyright © 2023 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'
AUTHOR
Written by Assaf Gordon.