URL:
<https://savannah.gnu.org/bugs/?62089>
Summary: find -size -1024k different from -size -1M
Project: findutils
Submitted by: None
Submitted on: Mon 21 Feb 2022 02:12:06 AM UTC
Category: find
Severity: 3 - Normal
Item Group: Wrong result
Status: None
Privacy: Public
Assigned to: None
Originator Name:
Originator Email:
Open/Closed: Open
Release: 4.7.0
Discussion Lock: Any
Fixed Release: None
_______________________________________________________
Details:
I'm trying to count the image files by size, here is what I got:
find -size -1024k different from -size -1M
```
$ find data/images/ -type f -name '*.jpg' | wc
878161 878161 27220516 # total number of jpg files
$ find data/images/ -type f -name '*.jpg' -size -500k | wc
878065 878065 27217540 # number of files whose size < 500k
$ find data/images/ -type f -name '*.jpg' -size -1M | wc
356 356 11036 # number of files whose size < 1M
```
So how come it's only 356 (much less than 878065)?
Anyone can explain? or tell me what's going wrong?
Then I tried `-1024k`, instead of `-1M`, which returns reasonable number:
```
$ find data/images/ -type f -name '*.jpg' -size -1024k | wc
878119 878119 27219214
```
So, why `-1M` behaved so wrong?
Below is my machine's system info:
```
$ which find
/usr/bin/find
$ dpkg -S /usr/bin/find
findutils: /usr/bin/find
$ dpkg -l findutils
Desired=Unknown/Install/Remove/Purge/Hold
|
Status=Not/Inst/Conf-files/Unpacked/halF-conf/Half-inst/trig-aWait/Trig-pend
|/ Err?=(none)/Reinst-required (Status,Err: uppercase=bad)
||/ Name Version
Architecture Description
+++-=======================================-========================-========================-====================================================================================
ii findutils 4.6.0+git+20170828-2 amd64
utilities for finding files--find, xargs
$ find --version
find (GNU findutils) 4.7.0-git
Copyright (C) 2017 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.
Written by Eric B. Decker, James Youngman, and Kevin Dalley.
Features enabled: D_TYPE O_NOFOLLOW(enabled) LEAF_OPTIMISATION FTS(FTS_CWDFD)
CBO(level=2)
$ cat /etc/issue.net
Ubuntu 18.04.2 LTS
$ uname -a
Linux 4.15.0-55-generic #60-Ubuntu SMP Tue Jul 2 18:22:20 UTC 2019 x86_64
x86_64 x86_64 GNU/Linux
```
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