[colug-432] Prevent SU from changing CWD

[Angelo McComis]

Leave off the -   The - means to emulate logging in, including cwd ~ and
loading the environment.


- Angelo

{via mobile device}

On Mar 9, 2011, at 7:09 AM, Steve VanSlyck <s.vanslyck at spamcop.net> wrote:

I've asked Google, but Google wasn't feeling very helpful.

When I become root via the "SU -" command, my current working directory is
changed to root's home.

"info su" says, *"By default, 'su' does not change the current directory. It
sets the environment variables 'HOME' and 'SHELL' from the password entry
for USER, and if USER is not the super-user, sets 'USER' and 'LOGNAME' to
USER."*

I think that means that SU asks root what directory to change to. Are there
any hints or tips someone can give me on how to prevent SU from changing the
current working directory, ideally without having to modify root's
environment variables?

Spam detection software, running on the system "lists.colug.net", has
identified this incoming email as possible spam.  The original message
has been attached to this so you can view it (if it isn't spam) or label
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Content preview:  I've asked Google, but Google wasn't feeling very helpful.
  When I become root via the "SU -" command, my current working directory is
  changed to root's home. "info su" says, "By default, 'su' does not change
  the current directory. It sets the environment variables 'HOME' and
'SHELL'
  from the password entry for USER, and if USER is not the super-user, sets
  'USER' and 'LOGNAME' to USER." [...]

Content analysis details:   (5.0 points, 5.0 required)

pts rule name              description
---- ----------------------
--------------------------------------------------
3.8 BAYES_99               BODY: Bayes spam probability is 99 to 100%
                           [score: 1.0000]
1.2 DATE_IN_PAST_03_06     Date: is 3 to 6 hours before Received: date
0.0 HTML_MESSAGE           BODY: HTML included in message


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Spam detection software, running on the system "lists.colug.net", has
identified this incoming email as possible spam.  The original message
has been attached to this so you can view it (if it isn't spam) or label
similar future email.  If you have any questions, see
the administrator of that system for details.

Content preview:  I've asked Google, but Google wasn't feeling very helpful.
  When I become root via the "SU -" command, my current working directory is
  changed to root's home. "info su" says, "By default, 'su' does not change
  the current directory. It sets the environment variables 'HOME' and
'SHELL'
  from the password entry for USER, and if USER is not the super-user, sets
  'USER' and 'LOGNAME' to USER." [...]

Content analysis details:   (5.0 points, 5.0 required)

pts rule name              description
---- ----------------------
--------------------------------------------------
3.8 BAYES_99               BODY: Bayes spam probability is 99 to 100%
                           [score: 1.0000]
1.2 DATE_IN_PAST_03_06     Date: is 3 to 6 hours before Received: date
0.0 HTML_MESSAGE           BODY: HTML included in message
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