[Bug 1952584] Re: bash exec command unwanted behaviour
Chris Guiver
1952584 at bugs.launchpad.net
Mon Nov 29 19:24:19 UTC 2021
Thank you for taking the time to report this bug and helping to make
Ubuntu better. Please execute the following command only once, as it
will automatically gather debugging information, in a terminal:
apport-collect 1952584
When reporting bugs in the future please use apport by using 'ubuntu-
bug' and the name of the package affected. You can learn more about this
functionality at https://wiki.ubuntu.com/ReportingBugs.
(this should be run on the 20.04 machine; as 16.04 has completed it's
five year standard support cycle, and now only gets security related
fixes for ESM users)
--
You received this bug notification because you are a member of Ubuntu
Foundations Bugs, which is subscribed to bash in Ubuntu.
https://bugs.launchpad.net/bugs/1952584
Title:
bash exec command unwanted behaviour
Status in bash package in Ubuntu:
Incomplete
Bug description:
(GNU bash 4.3.46)
(ubuntu 16.04 LTS)
Consider you have out.txt on current dir.
-------
>exec 123456789012>out.txt
bash: exec: 123456789012: not found
-------
exec command prints indicated error for large numbers that is supposed to use as a fd but redirects /proc/$$/fd/1 to out.txt silently.
Additionally,
-------
>exec 1234567890>out.txt
bash: 123456789: Bad file descriptor
-------
For large numbers but not that large (I don't inspect the limits!), exec command rejects fd number but silently adds a new fd to current bash process. In every execution of the command, bash adds a new fd to itself again and again.
To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/bash/+bug/1952584/+subscriptions
More information about the foundations-bugs
mailing list