powershell filter to remove .pdf extension in the name of a file - powershell

Question

I am trying to use powershell to get all child elements in a folder the code I am using is
Get-ChildItem -Recurse -path C:\clntfiles
this code gives output like
Mode LastWriteTime Length Name
---- ------------- ------ ----
-a--- 4/29/2015 9:11 AM 6919044 HD 100616 Dec2014.pdf
-a--- 5/1/2015 11:42 AM 7091019 HD 101642 Jan2015.pdf
I don't want Mode lastWriteTime Length and name of file without .pdf extension
the output should be like
Dec2014
Jan2015
I am not sure how to filter that. please advise

Answer 1

I'll start by posting something similar to Leptonator's answer, but simplified by using the Select-Object command (alias Select used in code because it's habit, and I'm lazy).
$files = Get-ChildItem -Recurse -path C:\clntfiles | Select -ExpandProperty BaseName
Now that gets you the file names without extension. But, you actually asked for only part of the file names, as the first file name is "HD 100616 Dec2014.pdf" and you specified that you actually only want "Dec2014" to be returned. We can do that a couple different ways, but my favorite of them would be a RegEx match (because RegEx is awesome, and I think the LastIndexOf/SubString combo is overly complicated imho).
So, a RegEx match of "\w+$" will get what you want. That is broken down like this:
\w means any letter or number
+ means 1 or more of them
$ means the end of the string/line
So that's 1 or more alpha-numeric characters at the end of the string. We pipe our array of file names into a ForEach-Object loop (alias ForEach used out of habit), and then we have:
$Files | ForEach{ [RegEx]::Matches($_,"\w+$")}
Now, this outputs a [System.Text.RegularExpressions.Match] object, which is more than you want, but it does have a property Value which is exactly what you asked for! So we use Select -Expand again for that property and the output is precisely what you asked for:
$files = Get-ChildItem -Recurse -path C:\clntfiles | Select -ExpandProperty BaseName
$files | ForEach{[regex]::Matches($_,"\w+$")} | Select -Expand Value
RegEx matches are really handy, and if you learn about them you can simplify that quite a bit more like this:
gci C:\clntfiles -Rec | ?{$_.BaseName -match "(\w+)$"} | %{$Matches[1]}
That one line, as well as the two line code above it both should output:
Dec2014
Jan2015

Answer 2

Something like this should do it for you..
$files = Get-ChildItem -Recurse -path C:\clntfiles
if ($files -ne $null)
{
foreach ($file in $files)
{
$file.BaseName
}
}
In my folder, it shows:
> 2014-03-28_exeresult_file
> 2014-03-30_exeresult_file
> 2014-03-31_exeresult_file
> 2014-04-02_exeresult_file
> 2014-04-03_exeresult_file
> 2014-04-04_exeresult_file
> 2014-04-06_exeresult_file
> 2014-04-08_exeresult_file
and are indeed .txt files
Hope this helps!

Answer 3

Use the following Get-ChildItem -Recurse -name -path C:\clntfiles. This will get you only the file names.
Working solution:
$names = Get-ChildItem -name
foreach($n in $names) {$n.Substring(0,$n.IndexOf("."))}
You can also use LastIndexOf if part of the file name is .