Regex Powershell shows too much-CodePudding

I am new to powershell. I am trying to automate my work a bit and need simple extraction of following pattern from all filetypes:

([0-9A-Z]{2,4}.[0-9A-Z]{8}.[0-9A-Z]{8}.[0-9A-Z]{4})

Example:

*lots of text*
X-xdaemon-transaction-id: string=9971.0A67341C.6147B834.0043,ee=3,shh,rec=0.0,recu=0.0,reid=0.0,cu=3,cld=1
X-xdaemon-transaction-id: string=AA71.0A67341C.6147B442.0043,ee=3,shh,rec=0.0,recu=0.0,reip=0.0,cu=3,cld=1
*lots of text*

Unfortunately, I am receiving output like this:

1mAAAA-0005nG-TN-H:220: 
X-xdaemon-transaction-id: string=AA71.0A67341C.6147B442.0043,ee=3,shh,rec=0.0,recu=0.0,reip=0.0,cu=3,cld=1

my 'code' is as following:

Select-String -Path C:\Samples\* -Pattern "(0001.[0-9A-Z]{8}.[0-9A-Z]{8}.[0-9A-Z]{4})" -CaseSensitive

And I'd like to receive only the patterns: AA71.0A67341C.6147B442.0043 without anything added

Thanks for any help!

CodePudding user response：

You can use

$rx = '\b[0-9A-Z]{2,4}\.[0-9A-Z]{8}\.[0-9A-Z]{8}\.[0-9A-Z]{4}\b'
Select-String -AllMatches -Pattern $rx -Path 'C:\Samples\*' -CaseSensitive | % { $_.matches.value }

That is,

Add word boundaries to match your expected strings as whole words and escape the literal . chars
Use -AllMatches (to get multiple matches per line if any) and access each resulting object match value with $_.matches.value.

PS test:

PS C:\Users\admin> $B = Select-String -AllMatches -Pattern '\b[0-9A-Z]{2,4}\.[0-9A-Z]{8}\.[0-9A-Z]{8}\.[0-9A-Z]{4}\b' -Path 'C:\Samples\*' -CaseSensitive | % { $_.matches.value }
PS C:\Users\admin> $B
9971.0A67341C.6147B834.0043
AA71.0A67341C.6147B442.0043
PS C:\Users\admin>

CodePudding user response：

try:

$find = Get-ChildItem *.txt | Select-String -Pattern '\b[0-9A-Z]{2,4}.[0-9A-Z]{8}.[0-9A-Z]{8}.[0-9A-Z]{4}\b' -CaseSensitive

$find.Matches.Value