I'm trying to build a file path in PowerShell and the string concatenation seems to be a little funky.
I have a list of folders:
c:\code\MyProj1
c:\code\MyProj2
I want to get the path to a DLL file here:
c:\code\MyProj1\bin\debug\MyProj1.dll
c:\code\MyProj2\bin\debug\MyProj2.dll
Here's what I'm trying to do:
$buildconfig = "Debug"
Get-ChildItem c:\code | % {
Write-Host $_.FullName + "\" + $buildconfig + "\" + $_ + ".dll"
}
This doesn't work. How can I fix it?
Try this
Get-ChildItem | % { Write-Host "$($_.FullName)\$buildConfig\$($_.Name).dll" }
In your code,
$build-Config is not a valid variable name. $.FullName should be $_.FullName$ should be $_.Name
$_.Name includes the extension. I suspect the intent was to replace the current extension with .dll instead of tacking on an additional .dll. :-)
You could use the PowerShell equivalent of String.Format - it's usually the easiest way to build up a string. Place {0}, {1}, etc. where you want the variables in the string, put a -f immediately after the string and then the list of variables separated by commas.
Get-ChildItem c:\code|%{'{0}\{1}\{2}.dll' -f $_.fullname,$buildconfig,$_.name}
(I've also taken the dash out of the $buildconfig variable name as I have seen that causes issues before too.)
Try the Join-Path cmdlet:
Get-ChildItem c:\code\*\bin\* -Filter *.dll | Foreach-Object {
Join-Path -Path $_.DirectoryName -ChildPath "$buildconfig\$($_.Name)"
}
This will get all dll files and filter ones that match a regex of your directory structure.
Get-ChildItem C:\code -Recurse -filter "*.dll" | where { $_.directory -match 'C:\\code\\myproj.\\bin\\debug'}
If you just want the path, not the object you can add | select fullname to the end like this:
Get-ChildItem C:\code -Recurse -filter "*.dll" | where { $_.directory -match 'C:\\code\\myproj.\\bin\\debug'} | select fullname
Write-Host- it only writes to the host console. You can't capture that output into a variable. If you simply removeWrite-Hostand have just the string sitting there it will 1) implicitly use Write-Output and 2) you will be able to capture that output to a variable e.g.gci c:\code | %{$_.FullName+"`$build-config\$($_.basename)\.dll"