Thank you for reporting this bug to Ubuntu. Ubuntu 16.04 (xenial) reached end-of-standard-life on April 29, 2021.
See this document for currently supported Ubuntu releases: https://wiki.ubuntu.com/Releases We appreciate that this bug may be old and you might not be interested in discussing it any more. But if you are then please upgrade to the latest Ubuntu version and re-test. If you then find the bug is still present in the newer Ubuntu version, please add a comment here telling us which new version it is in. 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. ** Changed in: bash (Ubuntu) Status: New => Incomplete -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, 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 -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp