[Bug 1792004] Re: built-in PATH seems to have sbin and bin out of order; and inconsistent

[Launchpad Bug Tracker]

This bug was fixed in the package bash - 4.4.18-2ubuntu3

---------------
bash (4.4.18-2ubuntu3) cosmic; urgency=medium

  * Resurrect "Set the default path to comply with Debian policy" in
    deb-bash-config.diff which went missing since 4.2+dfsg-1 or so.
    LP: #1792004 LP: #1614080 Closes: #781367
  * Add autopkgtest for the built-in path.

 -- Dimitri John Ledkov <xnox at ubuntu.com>  Wed, 12 Sep 2018 15:22:11
+0100

** Changed in: bash (Ubuntu)
       Status: New => Fix Released

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https://bugs.launchpad.net/bugs/1792004

Title:
  built-in PATH seems to have sbin and bin out of order; and
  inconsistent

Status in apt package in Ubuntu:
  New
Status in bash package in Ubuntu:
  Fix Released
Status in busybox package in Ubuntu:
  New
Status in dash package in Ubuntu:
  New
Status in dpkg package in Ubuntu:
  New
Status in pam package in Ubuntu:
  New
Status in systemd package in Ubuntu:
  New
Status in bash package in Debian:
  New

Bug description:
  $ env -u PATH /bin/sh -c 'echo $PATH'
  /usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin

  $ env -u PATH /bin/dash -c 'echo $PATH'
  /usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin

  $ systemd-run --unit test-env env # ... and check journal for PATH
  /usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin

  $ env -u PATH /bin/bash -c 'echo $PATH'
  /usr/local/bin:/usr/local/sbin:/usr/bin:/usr/sbin:/bin:/sbin:.

  $ env -u PATH /bin/busybox sh -c 'echo $PATH'
  /sbin:/usr/sbin:/bin:/usr/bin

  $ grep 'export PATH=' -r initramfs-tools-0.131ubuntu10/
  initramfs-tools-0.131ubuntu10/mkinitramfs:export PATH='/usr/bin:/sbin:/bin'
  initramfs-tools-0.131ubuntu10/init:export PATH=/sbin:/usr/sbin:/bin:/usr/bin

  dracut.sh has DRACUT_PATH=${DRACUT_PATH:-/sbin /bin /usr/sbin /usr/bin} exported as PATH
  dracut-047+31/modules.d/99shutdown/shutdown.sh:export PATH=/usr/sbin:/usr/bin:/sbin:/bin

  $ cat /etc/environment
  PATH="/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/usr/local/games"

  apt & dpkg => should probably initiate /usr/local-less PATH

  Imho the rest should probably be harmonised to:

  /usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/snap/bin

  ===

  From a duplicate
  https://bugs.launchpad.net/ubuntu/+source/bash/+bug/1614080 :

  $ for i in 12.04 12.10 13.04 13.10 14.04 14.10 15.04 15.10 16.04; do echo $i; docker run -it --rm ubuntu:$i bash -c "unset PATH; /bin/bash -c 'echo \$PATH'"; done
  12.04
  /usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin
  12.10
  /usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin
  13.04
  /usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin
  13.10
  /usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin
  14.04
  /usr/local/bin:/usr/local/sbin:/usr/bin:/usr/sbin:/bin:/sbin:.
  14.10
  /usr/local/bin:/usr/local/sbin:/usr/bin:/usr/sbin:/bin:/sbin:.
  15.04
  /usr/local/bin:/usr/local/sbin:/usr/bin:/usr/sbin:/bin:/sbin:.
  15.10
  /usr/local/bin:/usr/local/sbin:/usr/bin:/usr/sbin:/bin:/sbin:.
  16.04
  /usr/local/bin:/usr/local/sbin:/usr/bin:/usr/sbin:/bin:/sbin:.

  I believe later releases of bash, do too include CWD in the built-in
  PATH.

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