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Image of Advanced Programming in the UNIX Environment, Second Edition (Addison-Wesley Professional Computing Series)
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The KSH93 Version String

In this short post, I explain the various parts of the ksh93 version string and show you some useful things you can do with the version string.

Adding and Removing Disks From VMware RHEL7 Guests Without Rebooting

In this post, I show you how to quickly add or delete a virtual disk in a running Red Hat or CentOS guest VM, running on VMware Workstation or VMware Player, without rebooting the guest.

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.

RHCSA Preparation - Script to Configure a Simple OpenLDAP Server

If you are preparing for the RHCSA exam, this post should be of interest to you. I provide a Bash script which will fully configure a simple OpenLDAP directory server which you can then use to test that your OpenLDAP client setup is correct.

Bash-like Customizable Prompt in Korn Shell

Bash has built-in support for extensive PS1 prompt customization and as a result many people customize their shell prompts. There is no equivalent built-in support for PS1 customization in ksh93 but such support can easily be added using discipline functions.