comma seperate 2 values in powershell - powershell

Question

I am listing files in a directory along with their epoch time (being used on a Linux box, for centralized file management).
I'm having issues getting it to join 2 fields with a comma in between.
folder structure is
c:\temp\test
test1.txt
test2.txt
Expected output:
File: test1.txt,1518167449
File: test2.txt,1518167449
i have all the information in:
(Get-ChildItem C:\temp\test | select name, #{name='lastwritetime';Expression={[int][double]::Parse((Get-Date $_.LastWriteTime -UFormat %s))}})
gives the output
Name lastwritetime
test1.txt 1518167449
test2.txt 1518167455
but i'm not able to join them so they look in the correct format (with the comma join).

Answer 1

You could do something like this:
$Files = (Get-ChildItem C:\temp\test | select name, #{name='lastwritetime';Expression={[int][double]::Parse((Get-Date $_.LastWriteTime -UFormat %s))}})
$Files | ForEach-Object {
"$($_.Name),$($_.LastWriteTime)"
}
This uses a ForEach-Object loop that iterates through each file and outputs a string. The string uses subexpressions $( ) to allow us to access the two properties we want and interpolate them in the string with a comma between them.
Note that you don't have to use a $Files variable, you could instead chain the ForEach-Object command on the end of your Select, but because that command is already quite long this makes the code a bit cleaner.
Another option is this:
$Files | ForEach-Object {
"{0},{1}" -f $_.Name,$_.LastWriteTime
}
Its up to you as to which you feel is more readable.
You could also consider using the ConvertTo-CSV cmdlet, although that will also add quote marks around each value. If your ultimate destination is CSV though using that or Export-CSV is cleaner/simpler.