Two UEFI Screenshot Utilities Added To UEFI-Utilities-2019

In this post I discuss two new utilities that I have recently released for taking full or partial screenshots from within the UEFI shell.

Using PCI.IDS Database to Show PCI Vendor and Device Information in UEFI Shell

In this post, I describe a UEFI shell utility that I developed that displays PCI information including vendor and device descriptions from the PCI.IDS database.

Examining Intel Microcode in Lenovo Firmware Updates

This post demonstrates how to extract Intel microcode updates from a Lenovo firmware update using UEFItool and subsequently use an 010 Editor template to extract useful information from the extracted Intel microcode updates.

Sudo and Globbing

The question is how we can use the sudo utility to display a list of files in a directory to which we have absolutely no Unix filesystem privileges Consider the following directory and files contained therein: $ ls -l total 4 drwxrwx—. 2 root root 4096 May 22 21:14 demo $ su Password: XXXXXXXX # ls -l demo total 0 -rw-r–r–. 1 root root 0 May 22 21:14 file1 -rw-r–r–. 1 root root 0 May 22 21:14 file2 -rw-r–r–. 1 root root 0 May 22 21:14 file3 # exit exit Note the directory permissions are 770 and the user and

Gzip v Zip: Determing Which Type Of Archive

Sometimes it is different to easily tell which type of zipped archive you are dealing with because the zipped archive has an incorrect extension or no extension at all. Here is how to tell which you are dealing with: Zip file header: $ od -h zipped-file |head 0000000 8b1f … Gzip file header: $ od -h zipped-file |head 0000000 4b50 0403 …