[Bug 1890198] [NEW] bash rcfile option incorrectly still loads /etc/bash.bashrc

[Rodney Beede]

Public bug reported:

>From the man bash page:

The --rcfile file option will force bash to read and execute commands
from file instead of /etc/bash.bashrc and ~/.bashrc.


However when I add to /etc/bash.bashrc an echo statement at the top like echo Inside bash.bashrc and then execute:

/bin/bash --rcfile /tmp/some_test -i


where /tmp/some_test has some simple command like an echo statement I still get the echo statement indicating that /etc/bash.bashrc was loaded and run in addition to /tmp/some_test:

Inside bash.bashrc
you are in /tmp/some_test right now


Expected behavior was that since I used the --rcfile option that /etc/bash.bashrc would be ignored and not referenced. Only /tmp/some_test should have been used.


I also tried --noprofile with no change as well as leaving out -i. If I use --norc then /etc/bash.bashrc is correctly not used.

When I use the --rcfile option I expect /etc/bash.bashrc to not be used.
If this is going to be the behavior then the man page for bash needs to
be updated to state such.

ProblemType: Bug
DistroRelease: Ubuntu 20.04
Package: bash 5.0-6ubuntu1.1
ProcVersionSignature: Ubuntu 5.4.0-42.46-generic 5.4.44
Uname: Linux 5.4.0-42-generic x86_64
ApportVersion: 2.20.11-0ubuntu27.4
Architecture: amd64
CasperMD5CheckResult: skip
CurrentDesktop: ubuntu:GNOME
Date: Mon Aug  3 15:45:10 2020
InstallationDate: Installed on 2020-08-03 (0 days ago)
InstallationMedia: Ubuntu 20.04 LTS "Focal Fossa" - Release amd64 (20200423)
ProcEnviron:
 TERM=xterm-256color
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SourcePackage: bash
UpgradeStatus: No upgrade log present (probably fresh install)
mtime.conffile..etc.bash.bashrc: 2020-08-03T15:31:02.839478

** Affects: bash (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 apport-bug focal

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https://bugs.launchpad.net/bugs/1890198

Title:
  bash rcfile option incorrectly still loads /etc/bash.bashrc

Status in bash package in Ubuntu:
  New

Bug description:
  From the man bash page:

  The --rcfile file option will force bash to read and execute commands
  from file instead of /etc/bash.bashrc and ~/.bashrc.

  
  However when I add to /etc/bash.bashrc an echo statement at the top like echo Inside bash.bashrc and then execute:

  /bin/bash --rcfile /tmp/some_test -i

  
  where /tmp/some_test has some simple command like an echo statement I still get the echo statement indicating that /etc/bash.bashrc was loaded and run in addition to /tmp/some_test:

  Inside bash.bashrc
  you are in /tmp/some_test right now

  
  Expected behavior was that since I used the --rcfile option that /etc/bash.bashrc would be ignored and not referenced. Only /tmp/some_test should have been used.

  
  I also tried --noprofile with no change as well as leaving out -i. If I use --norc then /etc/bash.bashrc is correctly not used.

  When I use the --rcfile option I expect /etc/bash.bashrc to not be
  used. If this is going to be the behavior then the man page for bash
  needs to be updated to state such.

  ProblemType: Bug
  DistroRelease: Ubuntu 20.04
  Package: bash 5.0-6ubuntu1.1
  ProcVersionSignature: Ubuntu 5.4.0-42.46-generic 5.4.44
  Uname: Linux 5.4.0-42-generic x86_64
  ApportVersion: 2.20.11-0ubuntu27.4
  Architecture: amd64
  CasperMD5CheckResult: skip
  CurrentDesktop: ubuntu:GNOME
  Date: Mon Aug  3 15:45:10 2020
  InstallationDate: Installed on 2020-08-03 (0 days ago)
  InstallationMedia: Ubuntu 20.04 LTS "Focal Fossa" - Release amd64 (20200423)
  ProcEnviron:
   TERM=xterm-256color
   PATH=(custom, no user)
   XDG_RUNTIME_DIR=<set>
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  SourcePackage: bash
  UpgradeStatus: No upgrade log present (probably fresh install)
  mtime.conffile..etc.bash.bashrc: 2020-08-03T15:31:02.839478

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