PowerShell Script to backup files based on particular date

Here is a nice short PowerShell script I wrote up that can help system admins with backing up files based on their modified date. What this script does is recurse the directory you wish to scan for files based on a particular modified date and export their paths to a text file. The second line in the script parses the text file and removes all white spaces so that it is cleaned up to throw in to 7z, which is used to create a compressed zipped up file. Feel free to throw this in your scheduled tasks and test it out for your backups!

Get-ChildItem -Path E:\FilesToBackUp -Recurse | Where{$_.LastWriteTime -gt (get-date).AddDays(-1)} | Where{$_.PSIsContainer -ne $true} | Select FullName | format-table -HideTableHeaders | out-file E:\file_backup.txt
Select-String -Pattern "\w" -Path E:\file_backup.txt | ForEach-Object { $_.line} | Set-Content -Path E:\file_backup_cleaned.txt

# Use 7z Version 9.25 alpha or newer
7z a G:\BackupLocation\Daily%date:~4,2%-%date:~7,2%-%date:~10%.7z @E:\file_backup_cleaned.txt -spf