Configuration Information [Automatically generated, do not change]:
Machine: x86_64
OS: linux-gnu
Compiler: gcc
Compilation CFLAGS: -DPROGRAM='bash' -DCONF_HOSTTYPE='x86_64'
-DCONF_OSTYPE='linux-gnu' -DCONF_MACHTYPE='x86_64-pc-linux-gnu'
-DCONF_VENDOR='pc' -DLOCALEDIR='/usr/share/locale' -DPACKAGE='bash'
-DSHELL -DHAVE_CONFIG_H -I. -I../. -I.././include -I.././lib
-D_FORTIFY_SOURCE=2 -g -O2 -fstack-protector --param=ssp-buffer-size=4
-Wformat -Werror=format-security -Wall
uname output: Linux unknown 3.13.0-77-generic #121-Ubuntu SMP Wed Jan
20 10:50:42 UTC 2016 x86_64 x86_64 x86_64 GNU/Linux
Machine Type: x86_64-pc-linux-gnu
Bash Version: 4.3
Patch Level: 11
Release Status: release
Description:
On my notebook running Ubuntu 14.04.3 LTS /bin/sh points to dash, not
bash.
To get sh behaviour from bash I use the command `exec -a sh /bin/bash'.
When I do so bash sets BASH to /bin/sh, which it demonstrably is not.
The situation:
none@unknown:~$ ls -l /bin/bash /bin/sh
-rwxr-xr-x 1 root root 1021112 Oct 7 2014 /bin/bash
lrwxrwxrwx 1 root root 4 Feb 19 2014 /bin/sh -> dash
Repeat-By:
The demonstration:
none@unknown:~$ exec -a sh /bin/bash
sh-4.3$ [ "$BASH" -ef "/proc/$$/exe" ] || declare -p BASH
declare -- BASH="/bin/sh"
Fix:
I'm clueless.
