How do I concatenate strings with variables in PowerShell

Question

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

User · Answer

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

User · Answer

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

User · Answer

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

User · Answer

Try the  Join-Path cmdlet   Get-ChildItem c  code   bin   -Filter   dll   Foreach-Object       Join-Path -Path     DirectoryName -ChildPath   buildconfig      Name

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