[Bug 1952584] ProcEnviron.txt

[Ümit Atakul]

apport information

** Attachment added: "ProcEnviron.txt"
   https://bugs.launchpad.net/bugs/1952584/+attachment/5544260/+files/ProcEnviron.txt

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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.
  --- 
  ProblemType: Bug
  ApportVersion: 2.20.11-0ubuntu27.16
  Architecture: amd64
  CasperMD5CheckResult: skip
  CurrentDesktop: ubuntu:GNOME
  DistroRelease: Ubuntu 20.04
  NonfreeKernelModules: nvidia_modeset nvidia
  Package: bash 5.0-6ubuntu1.1
  PackageArchitecture: amd64
  ProcVersionSignature: Ubuntu 4.15.0-141.145-generic 4.15.18
  Tags:  focal
  Uname: Linux 4.15.0-141-generic x86_64
  UpgradeStatus: No upgrade log present (probably fresh install)
  UserGroups: adm cdrom dip libvirt lpadmin plugdev sambashare sudo wireshark
  _MarkForUpload: True

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