Lenovo packages its UEFI firmware updater as either a Windows installable package or a bootable CD image. The bootable image is great for those running Linux on their systems. However, if you do not have an external CD drive or do not want to burn a CD, the update process takes a few more steps. Fortunately, the updater can be extracted from the CD image and written to a USB drive with Linux.
Recently, I needed to use GPU instances with a custom AMI on EC2. The image I needed to use did not contain the necessary NVIDIA and CUDA modules and instead contained nouveau. This posed a unique situation because normally a reboot is necessary after installing the official module. However, the software I was provisioning the instances with was unable to resume after rebooting. Using this short script I was able to swap the opensource nouveau module for the NVIDIA module without rebooting the instance.
Have you have ever had a script or application accidentally send thousands of messages through your postfix queue? With this simple tip you no longer need to wait for those messages to be processed through the Postfix queue. This one liner is also helpful if you have a lot of differed messages in the Postfix queue you would like to discard.
When transferring files between systems usually
scpare all that is needed. Sometimes, there are difficult edge cases. For example using
rsyncto transfer many files spread across 1000s of directories quickly. Recently, I needed to move several TB worth of files in varying size spread across 1000s of directories. I found that
rsyncspent most of the time traversing directories and not copying the data. I turned to the webs to find a better solution.
Screen is a great command to know when working on linux and unix systems. Screen allows long commands to stay running if you become disconnected from a server or if you want to disconnect.