I am looking for a string of specific characters in a text file; I use
Select-String -Path clm-server-test.txt -Pattern "#(S****)"
I want to get only that characters matching the pattern, but it returns also characters before and after that string.
For example :
I have a registration set that starts with
S32145 thomas
S12345 bedro
S09867 stephane
with the Select-String command I want it to show me all the S *** words, not the names.
Select-String's -Pattern parameter by default expects a regex (regular expression) to search for.
"#(S****)" is not a valid regex (it looks more like a wildcard expression, except that you'd use ? to match a single character).
To match just the tokens that start with S followed by 5 digits, use S\d{5}, or, to match any number of digits, use S\d+, as TheIncorrigible1 suggests.
Also, you could refine the regex to match only at word boundaries (\b): '\bS\d{5}\b'
Select-String doesn't support outputting just the matching parts of lines, but you can do that by further processing the [Microsoft.PowerShell.Commands.MatchInfo] instances that it outputs.
To put it all together:
Select-String -Path clm-server-test.txt -Pattern '\bS\d{5}\b' |
ForEach-Object { $_.Matches[0].Value }
With your sample input this yields:
S32145
S12345
S09867
As an aside: As evident from the command above, Select-String currently doesn't make it easy to extract just the matching parts of the input lines.
If you're interested in having a switch introduced that simplifies this, participate in the discussion on GitHub.
thank you for your answer and for yours in fact, your order to bring me closer to the expected result except that, I would like him to return to me that the word that begins with a "S ***" until now point on the line in all things that I would like to avoid.
I would like him to see me the number "S7676583"
Thank you so much
(S\d+)