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bug#25029: shuf generates “Bad file descriptor” error on nfs but only wh
From: |
Pádraig Brady |
Subject: |
bug#25029: shuf generates “Bad file descriptor” error on nfs but only when run as a background process |
Date: |
Sat, 26 Nov 2016 00:06:49 +0000 |
User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:45.0) Gecko/20100101 Thunderbird/45.2.0 |
On 25/11/16 23:59, Pádraig Brady wrote:
> On 25/11/16 22:24, Alex Ryan wrote:
>> I am not certain about this but I *think* this might be a bug in shuf.
>>
>> full description of how to reproduce is here
>> http://stackoverflow.com/questions/40730239/shuf-generates-bad-file-descriptor-error-on-nfs-but-only-when-run-as-a-backgro
>
> The minimum reproducer is:
>
> $ shuf 0>&-
> shuf: read error: Bad file descriptor
>
> The reason is that the specified file is reopened to stdin,
> which is a general technique used by single file filters.
> I.E. this isn't specific to shuf:
>
> $ tac 0>&-
> tac: standard input: read error: Bad file descriptor
>
> You can avoid the issue by redirecting stdin from the file like:
>
> $ shuf < your_file
Actually the minimum reproducer is:
$ shuf /dev/null 0>&-
shuf: read error: Bad file descriptor
That format shows that tac doesn't have the issue
(and tac is not a single file util anyway):
but uniq does have the issue:
$ uniq /dev/null 0>&-
uniq: error reading /dev/null
We might be able to improve this.
Anyway the workaround presented previously should work.
cheers,
Pádraig
- bug#25029: shuf generates “Bad file descriptor” error on nfs but only when run as a background process, Alex Ryan, 2016/11/25
- bug#25029: shuf generates “Bad file descriptor” error on nfs but only when run as a background process, Paul Eggert, 2016/11/25
- bug#25029: shuf generates “Bad file descriptor” error on nfs but only when run as a background process, Pádraig Brady, 2016/11/25
- bug#25029: shuf generates “Bad file descriptor” error on nfs but only when run as a background process,
Pádraig Brady <=
- bug#25029: shuf generates “Bad file descriptor” error on nfs but only when run as a background process, Alex Ryan, 2016/11/25
- bug#25029: shuf generates “Bad file descriptor” error on nfs but only when run as a background process, Paul Eggert, 2016/11/25
- bug#25029: shuf generates “Bad file descriptor” error on nfs but only when run as a background process, Paul Eggert, 2016/11/25
- bug#25029: shuf generates “Bad file descriptor” error on nfs but only when run as a background process, Pádraig Brady, 2016/11/25
- bug#25029: shuf generates “Bad file descriptor” error on nfs but only when run as a background process, Paul Eggert, 2016/11/26
- bug#25029: shuf generates “Bad file descriptor” error on nfs but only when run as a background process, Pádraig Brady, 2016/11/26
- bug#25029: shuf generates “Bad file descriptor” error on nfs but only when run as a background process, Paul Eggert, 2016/11/26
bug#25029: shuf generates “Bad file descriptor” error on nfs but only when run as a background process, Eric Blake, 2016/11/28