Monday, July 23, 2012

How to add a domain user to a sudo group in linux

First you must add your linux in to a windows AD, once it is done, login as root or user that is in wheel group.

Execute this command visudo, that will open etc/sudoers file. if you do vi /etc/sudoers vi will give you an permission error. So besure to use visudo without space.

Find a line that looks like this

%wheel     ALL=(ALL)     ALL

put this just below that like (Yes with \\, in linux \ is an escape charator, so we have to put two \ instead of  one \) this...

domain\\username   ALL=(ALL)

example:   If you want to add a user test1 who is in

world\\test1 ALL=(ALL)

and this is an option you can put just behind the line, so it will not ask for a password if you do sudo. a bit of security issue but if you built a test linux machine gotta do lots of sudo, ye it can be your best friend.


example: world\\test1 ALL=(ALL)  NOPASSWD: ALL

That is all.

Installing Exchange 2013 preview - quick and dirty

What you will need, a domain controller, a windows server 2008 or R2 or 2012 and some pre-req items

I will use an Windows 2008 R2 x64 Enterprise version for this demo.

Download a Exchange server 2013 preview from here :

All Exchange 2010 servers in the organization need to be at Exchange 2010 SP3 orlater, and SP3 is not available at this time (2012, July), so if you try to install it on the current Exchange 2010, you won't be able to install it at all.

Pre-req items list


On powershell run

Import-Module ServerManager

Add-WindowsFeature RSAT-ADDS

2. Install IIS 7

On powershell run

Import-Module ServerManager\

Add-WindowsFeature Desktop-Experience, NET-Framework, NET-HTTP-Activation, RPC-over-HTTP-proxy, RSAT-Clustering, RSAT-Web-Server, WAS-Process-Model, Web-Asp-Net, Web-Basic-Auth, Web-Client-Auth, Web-Digest-Auth, Web-Dir-Browsing, Web-Dyn-Compression, Web-Http-Errors, Web-Http-Logging, Web-Http-Redirect, Web-Http-Tracing, Web-ISAPI-Ext, Web-ISAPI-Filter, Web-Lgcy-Mgmt-Console, Web-Metabase, Web-Mgmt-Console, Web-Mgmt-Service, Web-Net-Ext, Web-Request-Monitor, Web-Server, Web-Stat-Compression, Web-Static-Content, Web-Windows-Auth, Web-WMI

3. Install hotfix 2619234

4. Microsoft Unified Communications Managed API 4.0, Core Runtime 64-bit.

5. KB974405

6. Microsoft Office 2010 Filter Packs - Version 2.0

7. Microsoft Office 2010 Filter Packs - Service Pack 1

8. Install Windows Media Encoder

9. .Net framework 4.0

10. .Net framework 4.5

11. Windows Management Framework 3.0

12. Exchange Server 2013 Preview isn't compatible with Microsoft Visual C++ 11 Beta Redistributable (x64) 11.0.050531. Please uninstall it before you install Exchange 2013 Preview.
Uninstall Microsoft Visual C++ 11 Beta using "programs and feafures"

Installation steps

1. Install all pre-req items, and reboot.

2. Fully patch the new windows 2008 r2 server.

3. Run the exchange-x64.exe, it will ask a place to extract the files.

4. Choose a folder to extract.

5. Go to the folder and execute the setup.exe file

6. On Check for updates, I chose not to check, Next

7. Copying files, Next

8. Introduction screen, Next

9. Accept the license term, Next

10. Error reporting, choose no, and Next

11. On checking required software, Next

12. Installation space and location, Next

13. On Malware protection settings, select Yes to disable it and Next

14. On configure client access server, select , "this client server role will be internet-facing" and fill out the domain information

15. On customer experience improvement program window, click Next.

16. Readiness checks, wait until it finishes its task.

17, Once all check got passed, Next

18, setup will start

19, Installed

If you get "The WS-Management service does not support the request" error when you open the exchange powershell execute the command below on command prompt

%SystemDrive%\Windows\Microsoft.NET\Framework64\v4.0.30319\aspnet_regiis.exe -ir -enable

and reset the  IIS by runnig


2013 OWA with new office 2013 logo

First look of OWA 2013


Options page

Installed Apps page

Wednesday, July 18, 2012

CentOS 6 : Using DVD/CD as your local repo #2

Put the dvd in to the cdrom, and we need to mount the dvd.
#mkdir /media/CentOS_6.2_Final

after that mount the dvd with this command:

#mount /dev/cdrom /media/CentOS_6.2_Final
and then Edit CentOS-Media.repo
vi /etc/yum.repos.d/CentOS-Media.repo

You will see something like this

       and blah blah

Change the "file=:///media/CentOS" to "file=:///media/CentOS_6.2_Final"

Save the file

and install package

yum --disablerepo=\* --enablerepo=c6-media

for example to install perl

yum --disablerepo=\* --enablerepo=c6-media install perl