The current UNIX landscape
The UNIX system was originally developed by Bell Labs over 40 years ago as the first Open Systems operating system. The intent of Bell Labs was to have an underlying operating system kernel and shell that was not tied to specific hardware. To accomplish this, Bell Labs created underlying operating system capabilities and provided hooks to allow specific vendors to adapt UNIX to their hardware. This resulted in similar, but not identical, variants of UNIX offered by the various vendors. This means there is no binary compatibility for applications written on different variants. However, users should be able to recompile applications for a specific variant without a lot of changes. In reality, this is sometimes the case, but not always.
The result is several variants of UNIX that have similar, but not identical, paths to modernize to Azure. The primary variants of UNIX this book will discuss are as follows:
- AIX: Covered in Chapter 3
- Solaris: Covered...