All:
I'm attempting filter user accounts based on samAccountName formatting. The
standard we use is user's initials + employee ID. For example: AB1234. The
issue I ran into is there are some test/service accounts using a similar format
(e.g. TEST1234) being returned when I used the initial regular expression of
"[A-Z]{2}[0-9]{3,}". I added a carrot to the beginning and it now is excluding
accounts that don't begin with two letters. I did a spot check across my
results and while it appears now only accounts matching our standard user
criteria are returned, I was hoping for a sanity check:
This returns standard (e.g. AB1234) and non-standard accounts (e.g. TEST1234):
$StdUsers = Get-ADuser -Filter {Enabled -eq $True} -Properties * | Where
{$_.samAccountName -match "[A-Z]{2}[0-9]{3,6}"}
This only returns standard account naming conventions (e.g. AB1234, CD56789):
$StdUsers = Get-ADuser -Filter {Enabled -eq $True} -Properties * | Where
{$_.samAccountName -match "^[A-Z]{2}[0-9]{3,6}"}
I was hoping this group could help me confirm two things:
1) The "^[A-Z]{2}[0-9]{3,6}" regular expression is the best one for matching
accounts like "AB1234" while ignoring "TEST1234". One question I have is would
"^[A-Z]{2}[0-9]{3,6}" still match on something like "AB1234TEST"? I am not sure
if what I have is explicitly looking from the start of the samAccountName for
two letters followed by 3-6 digits, and ignoring any characters beyond.
2) Is my filtering and matching formatted efficiently using standard
cmdlets? I tried using a regular expression within the -Filter parameter, but
the error I received makes me think I cannot filter with regular expressions
(at least the Get-ADUser cmdlet doesn't support it). I know the mantra "filter
left, format right", still looking if there is a better way to accomplish this
goal.
In case it's relevant, I'm doing some AD attribute settings for phone number
formatting-some users are "(555) 555-5555" or "5555555555" and we're moving
towards a standard "555-555-5555", but I first only want to pipe standard user
accounts.
Thank you for your time.
-Geoff
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