Questions[execution](server)

I am installing mongodb on ubuntu terminal from this url (http://mongojs.org/install-mongodb-ubuntu-11-04-natty)

I am on the step where you type in ./mongod

when I type that I get the following: bash: ./mongod cannot execute binary file error

can someone help me get over this obstacle? thanks.

We have some Nagios checks that connects to a Windows server and runs a script. This script is not signed, and our admin had set the script exeuction policy for the server, about a year ago, to... unrestricted I believe. Whatever policy is the least secure.

What's happening now (this is an Exchange server FYI) is that at least once a day, the execution policy is being changed such that our Nagios check breaks. Our Windows admin goes to manually force the policy back to unrestricted, but the same thing happens.

Now, I don't really care of have the knowledge to get into a debate about whether this is or isn't good for security. But what our admin was wondering, and I am too, is how we can identify what is changing the policy "out from under us", and put an end to it?

After all, who's to say we don't change our minds to go with a more secure policy, only to have THAT one yanked out from under us.

Any insight is greatly appreciated. Let me know if I can track down any other helpful details.

I want ~/.bashrc will be source whenever changing its content. I created a bashrc class with something like this:

file { "/root/.bashrc":
    ensure  => present,
    owner   => root,
    group   => root,
    mode    => 0644,
    source  => "puppet:///bashrc/root/.bashrc"
}

exec { "root_bashrc":
    command     => "source /root/.bashrc",
    subscribe   => File["/root/.bashrc"],
}

but as you know, source is a shell built-in command, thereforce I got the following error when running agent:

# puppet agent --no-daemonize --verbose
notice: Starting Puppet client version 2.7.1
info: Caching catalog for svr051-4170
info: Applying configuration version '1311563901'
err: /Stage[main]/Bashrc/Exec[root_bashrc]/returns: change from notrun to 0 failed: Could not find command 'source'
notice: Finished catalog run in 2.28 seconds
notice: Caught INT; calling stop

Is there any workaround to do this?

I have a PHP script which is called by HTTP and not as command line script. This script should call a shell command as an other user than the current webserver user www-data.

Example:

<?php
echo shell_exec('sudo -u myusername -S /usr/bin/whoami'); // returns nothing :(
echo shell_exec('whoami'); // returns www-data

When calling this 2 commands sudo -u myusername -S /usr/bin/whoami and whoami directly on the commandline they return

myusername
www-data 

Also no result on this:

<?php
echo shell_exec('echo "mypass" | sudo -u myusername -S /usr/bin/whoami');

For me it seems that sudo does not work at all together with PHPs shell_exec().

Upon any ssh login/connection (anybody logging in through ssh), is there a way to have a script executed? Using OpenSSH server.

The script should not be modifiable by any of the users, -- of course --, so this should be a system-wide script.

Thanks!