Problem scenario
When running a PowerShell script, you receive the error “Unable to initialize device PRN.”  

Solution
Use the “echo” reserved word instead of “print”.

PRN is what the Windows system name for printer (according to this external posting).

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Continue reading “How Do You Troubleshoot This PowerShell Error “Unable to initialize device PRN.”?”

Problem scenario
You have a list of strings in a .txt file.  You want each string to be in the reverse order from left to right.  You want the strings to remain in their current order from top to bottom.  In other words, you want the content of each line to be reversed. Otherwise you want to preserve the lines in the file (row by row).  For example, the file looks like this:

abc
def
ghi

You want the PowerShell script to transform the above list into this as a separate and new file:

cba
fed
ihg

How do you write such a program?

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Continue reading “Using PowerShell, How Do You Reverse the Individual Strings in a .txt File While Preserving the Top to Bottom Order of the Lines Themselves?”

Problem scenario
You have two files.  One file is the main file you want to modify by removing lines that match specific patterns.  The second file has patterns (or strings) that should not be in a final, filtered list.   How do you filter a file to remove the patterns that match strings in another file?

Solution
# This assumes you want to ignore blank spaces in the second file.  

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Continue reading “How Do You Create a PowerShell Script to Filter a List by Removing Any Line That Matches Patterns or Strings in a Second File?”