Example 1: To Compare Two Files, and List Their Differences. This command compares the contents of two text files. Here Apple is present in the second file (-differenceObject set) not in the first file (-ReferenceObject set) so the output will be => and Guva is present in the first file and not in the second file, so the output will be <=. If you want a keepsake or want to perform further processing, you can export the list to a comma-delimited file that can be opened in Excel or used by another program. The command below saves the group members list to the current working directory in a file called adgroupmembers.csv.
PowerShell can easily create CSV files using Export-Csv, and if Microsoft Excel is installed on your system, PowerShell can then have Excel convert the CSV file to a native XLSX Excel file. Here is some sample code. It uses Get-Process to get some data, then writes the data to a CSV file.