Month: June 2016

Blacklisting Kernel Modules

Posted on by rchapin

Following is a walkthrough on how to blacklist a kernel module.  The specific example is blacklisting the nouveau driver so that I can install the OEM Nvidia driver.

1. First, blacklist the nouveau driver: Add a line to the textfile /etc/modprobe.d/nouveau-blacklist.conf that contains they keyword ‘blacklist’ and the name of the driver

blacklist nouveau

2. Rebuild the initramfs image file.  First, backup existing initramfs

mv initramfs-3.10.0-327.18.2.el7.x86_64.img initramfs-3.10.0-327.18.2.el7.x86_64.img_2016-06-09.bak

Build new initramfs

dracut -v /boot/initramfs-$(uname -r).img $(uname -r)

3. Reboot the system → Continue reading “Blacklisting Kernel Modules”

How to Return Hive Query Results Similary to MySQL \G in One Vertical Column

Posted on by rchapin

When trying to look at data in a database with really wide rows even just selecting 1 row to see the data is nearly impossible to understand when the single row wraps 7 or 8 times.

MySQL offers the ‘\G’ option to display the output in a single column.

The corresponding method in Hive is to execute the following set command:

!set outputformat vertical
SELECT something FROM some table;
→ Continue reading “How to Return Hive Query Results Similary to MySQL \G in One Vertical Column”

How to Configure a User Account in Active Directory So that the Password Never Expires

Posted on by rchapin

Using ADSI Edit, navigate to the user in question.  Right-click on the user and select Properties.

Then, scroll down to the ‘userAccountControl’ property and click the Edit button.

Enter 66048 into the field and then click ‘OK’ and then ‘Apply’.

After closing the edit window, scroll to the right to confirm that the value indicates the following

'0x10200 = (NORMAL_ACCOUNT|DONT_EXPIRE_PASSWORD)'
→ Continue reading “How to Configure a User Account in Active Directory So that the Password Never Expires”
© 2005 Ryan Chapin