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Fwd: Bug: rm -rf /*/*
From: |
Robert Swinford |
Subject: |
Fwd: Bug: rm -rf /*/* |
Date: |
Tue, 30 Nov 2021 14:53:12 -0600 |
TWIMC:
This seems like a bug: https://twitter.com/nixcraft/status/1465599844299411458
I was able to replicate the behavior in a container with coreutils version 8.30
and bash 5.0.
Interestingly, however, rm -rf // only does the following (and globbing in zsh
evals /*/* to //):
"root@test:~# rm -rf //
rm: it is dangerous to operate recursively on '//' (same as '/')
rm: use --no-preserve-root to override this failsafe”
I don’t think anything in POSIX demands bash's behavior, and I believe illumos
has already solved this problem in a POSIX compliant fashion, by failing when
the user tries to remove the current working directory, see:
https://www.youtube.com/watch?v=l6XQUciI-Sc&t=4903s
I also submitted this report to GNU coreutils.
Appreciate your attention to this bug!
--
----------------------------------------------
ROBERT SWINFORD
----------------------------------------------
robert.swinford@gmail.com <mailto:robert.swinford@gmail.com>
m: (405) 209-2339
----------------------------------------------
> Begin forwarded message:
>
> From: Robert Swinford <robert.swinford@gmail.com>
> Subject: Re: Bug: rm -rf /*/*
> Date: November 30, 2021 at 2:08:35 PM CST
> To: bug-coreutils@gnu.org
>
> BTW, zsh globbing doesn’t exhibit this behavior! It seems it is only a
> problem in bash.
>
> --
> ----------------------------------------------
> ROBERT SWINFORD
> ----------------------------------------------
> robert.swinford@gmail.com
> m: (405) 209-2339
> ----------------------------------------------
>
>> On Nov 30, 2021, at 1:58 PM, Robert Swinford <robert.swinford@gmail.com>
>> wrote:
>>
>> TWIMC:
>>
>> This seems like a bug:
>> https://twitter.com/nixcraft/status/1465599844299411458
>>
>> I was able to replicate the behavior in a container with coreutils version
>> 8.30.
>>
>> Interestingly, however, rm -rf // only does the following:
>>
>> "root@test:~# rm -rf //
>> rm: it is dangerous to operate recursively on '//' (same as '/')
>> rm: use --no-preserve-root to override this failsafe"
>>
>> I believe illumos has already solved this problem in a POSIX compliant
>> fashion, see: https://www.youtube.com/watch?v=l6XQUciI-Sc&t=4903s
>>
>> Appreciate your attention to this bug!
>>
>> --
>> ----------------------------------------------
>> ROBERT SWINFORD
>> ----------------------------------------------
>> robert.swinford@gmail.com
>> m: (405) 209-2339
>> ----------------------------------------------
>>
>
- Fwd: Bug: rm -rf /*/*,
Robert Swinford <=