Append/Consolidate a lot of files to 1 file

Again a need I have regurlarly. You have a lot of files you want to append in only one text. For example a lot of .csv files that you want to consolidate in 1 .csv file

Here it's a powershell script that consolidate all file in a folder to a file "_allFilesInOne.txt". Just put this file GetAllFilesInOne_ps1.txt in a folder and run it (renamed it .ps1 before)

#
# Get All Files In One File
#
# F.Richard
# 2010 June
#
$appendfile = "_allFilesInOne.txt"
$files = Get-ChildItem * -exclude $appendfile,$MyInvocation.MyCommand.Name -include *
$Content = ""
$Content | Out-File $appendfile
ForEach ($filename in $files) {
 Write-Host $filename
 $Content = Get-Content $filename
 $Content | Out-File -append $appendfile
}

You can improve this script easily.
For example, you can exclude .log files by changing
-exclude $appendfile,$MyInvocation.MyCommand.Name
by
-exclude $appendfile,$MyInvocation.MyCommand.Name,*.log

You can can also change inclusion of all files to only .txt files by changing
-include *
by
-include *.txt