Powershell Match Statement from list of Files

Question

I am searching through a directory looking for files that only contain the number 0 .

I have used the code:

$fileList = Select-String -Path c:\cnt\*.txt -pattern "0"

And it outputs a list, such as:

C:\cnt\itm123.txt:1:0
c:\cnt\itm1234.txt:1:0
c:\cnt\itm123456.txt:1:0

I need to only extract the itm### but the total numbers in the filename can range from 3-6.

Using the example above I need a list that looks like:

itm123
itm1234
itm123456

Once I get that I will run each through a SQL query, but I am not worried about that part.

Answer 1

The Select-String cmdlet returns a list of Microsoft.PowerShell.Commands.MatchInfo objects. If you call the Get-Member cmdlet with the parameter -MemberType Properties you will get a list of all exposed properties:

Name       MemberType Definition                                                       
----       ---------- ----------                                                       
Context    Property   Microsoft.PowerShell.Commands.MatchInfoContext Context {get;set;}
Filename   Property   string Filename {get;}                                           
IgnoreCase Property   bool IgnoreCase {get;set;}                                       
Line       Property   string Line {get;set;}                                           
LineNumber Property   int LineNumber {get;set;}                                        
Matches    Property   System.Text.RegularExpressions.Match[] Matches {get;set;}        
Path       Property   string Path {get;set;}                                           
Pattern    Property   string Pattern {get;set;}    

In this case, you are looking for the Filename property. So if you execute

Select-String -Path c:\cnt\*.txt -pattern "0" | select FileName

you will get all filenames:

itm123.txt
itm1234.txt
itm123456.txt

Now all you have to do is to remove the file extension which can be done using the .NET method GetFileNameWithoutExtension :

Select-String -Path c:\cnt\*.txt -pattern "0" | 
    ForEach-Object { [io.path]::GetFileNameWithoutExtension($_.FileName)} 

Output :

itm123
itm1234
itm123456