Add content from text and from different files are two different things
Append content sting from some variable which can be dynamic content.
For adding static content from one or more file also possible in PowerShell.
We have different approaches to achieved this bur
Let's see how we can achieve that in simple way
Example
get-content Test-File1.txt >> Out-File-Merge-Of-Test-File1-and-2.txt
get-content Test-File2.txt >> Out-File-Merge-Of-Test-File1-and-2.txt