C. Ross's questions

I'm trying to set up Jenkins in Tomcat7 on Ubuntu. I installed Tomcat7 and deployed jenkins.war, and I now see the Jenkins home page at http://myhost:8080/jenkins, but it's attempting to create the Jenkins directory at /usr/share/tomcat7/.jenkins, which it can't for security reasons. I've already created /srv/jenkins and given the tomcat7 group permissions, and want to set JENKINS_HOME to that path. I've tried adding it to the tomcat configuration in /etc/tomcat7/server.xml:

<GlobalNamingResources>

  <Environment name="JENKINS_HOME" value="/srv/jenkins"
       type="java.lang.String" override="false"/>
  <!-- Default settings -->

And I've also tried adding it to the automatically created context file in ROOT/META-INF/context.xml (there is no $CATALINA_HOME/conf as far as I can tell).

<Context path="/"
        antiResourceLocking="false" >
    <Environment name="JENKINS_HOME" value="/srv/jenkins/" type="java.lang.String"/>
</Context>

But even after restarting tomcat7 I still get the same result (trying to use /usr/share/tomcat7/.jenkins).

Where do I need to set the environment variable for JENKINS_HOME in Tomcat7?

I have a search I'd like to run against a zOS dataset, and I know how to form the grep command. I have access to the machine via Unix system services, how to I address a dataset from that environment?

Is it possible to have two different version of an ODBC driver installed on a single server, specifically Sybase Adaptive Server Enterprise 12.5 and Adaptive Server Enterprise 15.5?

Obviously any program would have to use one driver or the other.

how can I tell what version of SharePoint a site is using, without being able to see the admin panel?

Is there anything, perhaps in the source of the pages, that would give me a clue?

What could be causing a windows 2003 file server to no longer release file locks? The locks are being created and not released by

• Legacy vendor code (C++ I assume)
• Legacy code, VB
• Newer C# code

All with separate logging code (all locks are happening in logs so far). The problem has been steadily getting worse for the past month, and now is occurring multiple times a day. The only system wide change we've made recently (patches are staggered across affected and un-affected servers) is a storage change on the file server to CLARiiON. What could be causing the locks to not release as they are no longer used?

Related: Windows File Sharing Orphaned File Locks

What is the rootvg in AIX? Is it something that is unique to AIX?

How can I configure fail2ban to always allow attempts from the local/NAT ips (ie 192.168.1.*). I have tried putting the following entry into /etc/fail2ban/jail.conf:

[DEFAULT]

# "ignoreip" can be an IP address, a CIDR mask or a DNS host
ignoreip = 127.0.0.1 192.168.1.*
bantime  = 600
maxretry = 3

but upon restart I had the following warning in my /var/log/fail2ban.log

WARNING Unable to find a corresponding IP address for 192.168.1.*

What's the correct configuration for what I'm trying to do?

Please note that I still wish local host (127.0.0.1) to be exempted as well.

Ubuntu 9.04

I'm learning about Linux password security (more curiosity than anything useful), and I understand that the real password is hashed and stored in the shadow password file. What I'm not sure of, and haven't been able to find in my brief Googling, is what encoding is used to encode the hashed value (and the value of the salt). It's obviously not hex, and it's obviously text, excluding the : character. Can anyone here tell me what that encoding is?

Edit: I'm understand the hashing (MD5, SHA-X), the salt, and the hashing specifier. What I'm looking for is the method of converting the hash results (a byte array (byte[])) to the sequence of characters I see in the file, ie: the encoding.

Is there a way to automatically geo-locate an ip-address on Ubuntu linux? I'm looking to do this for errors in my auth.log.

How can I determine how much memory a process is using in AIX?

How can I get diff to show only added and deleted lines? If diff can't do it, what tool can?

What's the easiest way to check the members of an AD Domain Group from a Windows XP or Server 2003 computer?

Preferably this would be a gui, or a one line console command (not a script).

How do I pipe the standard error stream without piping the standard out stream?

I know this command works, but it also writes the standard out.

Command 2>&1 | tee -a $LOG

How do I get just the standard error?

Note: What I want out of this is to just write the stderr stream to a log and write both stderr and stdout to the console.

I have an Ubuntu Linux server that is web facing. Because of this I get a fair number of brute force SSH attempts (who doesn't). I'd like to display the last N failed login attempts at my login prompt. I've worked out the simple script:

grep "Failed" /var/log/auth.log | tail -5

but what I need to know is where do I put this line of script? Is there somewhere to put it that's shell agnostic?

When a IIS was upgraded to IIS 6.0 or higher, large files (specifically larger than 204,800 bytes) uploaded via ASP get the following error:

error '800a0001'

Request.BinaryRead failed

What will fix this error?

How can I get the version of the core C libraries installed on an AIX server?

What does the following shell script mean? This is ksh and npfile is also a variable that contains a file name.

fileName=${npFile##/*/}

How should I decide what size to make my swap on a new Linux machine (Debian) with 2-4 GB of RAM? Do I really need swap space?

How many user accounts should be setup for a given application? Where should the separation be?

• Should it be one login per application?
• 1 Application per program?
• 1 for front end and backend?

How do you set up your database accounts?

We have a webserver that's reacting slowly. It seems that a DLLHost.exe is the problem (taking ~100% Processor). How do we tell which dll in DLLHost is causing the problem. We've seen which ones are loaded with Process Explorer, but the list is 100 DLLs long. What tool or technique can we use to isolate the problem?