Get-ChildItem can be used to list the files and directories in a directory.

> Get-ChildItem -path C:\Users\john.doe\Documents

    Directory: C:\Users\john.doe

Mode                LastWriteTime         Length Name                                                                                                                    
----                -------------         ------ ----                                                                                                                                                                                                                                                                                                                                                
-a----        8/1/2022   11:37 PM             11 example.txt

Get-Content can then be used to read the content of a file. In this example, the example.txt file contains the line "Hello World".

> Get-Content -path C:\Users\c065234\Documents\example.txt
Hello World

Of course, most files have many lines of content. Select-String can be used to only return the lines in the file that match a pattern.

Get-Content -path C:\Users\c065234\Documents\example.txt | Select-String foo