Re: [PLUG] traversing symbolically linked directories with bash

[Jeff Bailey <skydiver38@verizon.net>]

according to this:
http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=642392

it seems like Debian prefers it that way....


On 12/29/11, Eric at Lucii.org wrote:

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I've run across a behavior in bash that I thought was impossible.

I'm running bash on an Ubuntu 10.04 box.
Bash is: GNU bash, version 4.1.5(1)-release (i486-pc-linux-gnu)

I have a home directory and I create a soft link to another directory like this example:

/home/eric/appdata -> /opt/myapplication/users/eric/data

Now I start a shell in my home directory, cd to appdata, and then try to see where I am:

shell builtin "pwd" returns: /home/eric/appdata
executable /bin/pwd returns: /home/eric/appdata
ls -l .. shows contents of /home/eric
cd .. takes me back to /home/eric

SO FAR, SO GOOD.

Next, I log on to a Debian system.
Linux version 2.6.26-2-686 (Debian 2.6.26-27) (dannf@debian.org) (gcc version 4.1.3 20080704 (prerelease) (Debian 4.1.2-25)) #1 SMP Wed Sep 21 04:35:47 UTC 2011

I do the same thing...
shell builtin "pwd" returns: /home/eric/appdata
executable /bin/pwd returns: /opt/myapplication/users/eric/data <- OOPS!
Here's my problem:
ls -l .. shows contents of /opt/myapplication/users/eric, NOT /home/eric
cd .. takes me back to /opt/myapplication/users/eric, NOT /home/eric

Is there some bash setting I'm unaware of that causes this behavior? It makes no sense to me!
I don't even know how to do a Google search for it. I thought it might be related to some aspect
of posix mode but the behavior remains even after exec bash --posix or set -o posix.


Eric
- -- 
# Eric Lucas
#
# "Oh, I have slipped the surly bond of earth
# And danced the skies on laughter-silvered wings...
# -- John Gillespie Magee Jr
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