I want to use powershell to search all AD samaccountname start with "jamec" - short form of full name like "Jame Cameron" - and end with number but not include other short form like "jamech"
"jamec" - match "jamec1234" - match "jamec12" - match
"jamech" - not match "jamech12" - not match
tried this "^jamec(\d+)(?!.*\d)" but string without number "jamec" become not match.
Try using:
^jamec\d*$
This matches jamec followed optionally by only one or more digits. If you want to also match other content in the input, then use ^jamec\d*\b instead.
If you want to ensure that the first digit in the optional number does not start with zero, then use:
^jamec(?:[1-9][0-9]*)?$
The pattern you tried ^jamec(\d+)(?!.*\d) requires that there is at least 1 digit following jamec.
The negative lookahead (?!.*\d) asserts that in all the characters to the right there can not be a digit present.
You could use a word boundary \b and match the digits 0+ times using * instead of +
^jamec\d*\b
To match nothing after the digits, you could also assert a whitespace boundary
^jamec\d*(?!\S)