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

i trying use powershell child elements in folder code using is

get-childitem -recurse -path c:\clntfiles 

this code gives output like

mode                lastwritetime     length name                                                                       ----                -------------     ------ ----                                                                       -a---         4/29/2015   9:11    6919044 hd 100616 dec2014.pdf   -a---          5/1/2015  11:42    7091019 hd 101642 jan2015.pdf     

i don't want mode lastwritetime length , name of file without .pdf extension

the output should

dec2014 jan2015 

i not sure how filter that. please advise

i'll start posting similar leptonator's answer, simplified using select-object command (alias select used in code because it's habit, , i'm lazy).

$files = get-childitem -recurse -path c:\clntfiles | select -expandproperty basename 

now gets file names without extension. but, asked part of file names, first file name "hd 100616 dec2014.pdf" , specified want "dec2014" returned. can couple different ways, favorite of them regex match (because regex awesome, , think lastindexof/substring combo overly complicated imho).

so, regex match of "\w+$" want. broken down this:

\w means letter or number
+ means 1 or more of them
$ means end of string/line

so that's 1 or more alpha-numeric characters @ end of string. pipe our array of file names foreach-object loop (alias foreach used out of habit), , have:

$files | foreach{ [regex]::matches($_,"\w+$")} 

now, outputs [system.text.regularexpressions.match] object, more want, have property value asked for! use select -expand again property , output precisely asked for:

$files = get-childitem -recurse -path c:\clntfiles | select -expandproperty basename $files | foreach{[regex]::matches($_,"\w+$")} | select -expand value 

regex matches handy, , if learn them can simplify quite bit more this:

gci c:\clntfiles -rec | ?{$_.basename -match "(\w+)$"} | %{$matches[1]} 

that 1 line, 2 line code above both should output:

dec2014 jan2015