All operating systems provide a way for you to rename the files on your computer. How to do it depends on your operating system.
Renaming Files

If you have two files that contain similar data that you want to merge into one file then using jut one or two commands at a command prompt can do it for you regardless of which operating system you are using.
Merging Two Files

One thing that OS/2 supports at the command line is the ability to stack commands - either to run simultaneously or one after the other. This article shows how to do it.
Stacking Commands in OS/2

Being able to shut down a program that has locked itself up and is using resources without achieving anything is essential on any operating system. One operating system where the option allowing you to do this is hidden away where it is not so easy to find is OS/2. In fact with OS/2 you need [...]

One section of the site that I haven’t been giving as much attention as I perhaps ought to lately is the section covering the various operating systems. I have sections covering a number of popular operating systems. See if the answers to your operating systems are there and if not then please suggest some additional [...]