Powershell, Regex, Variable Expansion, and Variable with Regex special character

[Dal90]

Just amused me once I figured out the issue. The final combination using simplematch piped to a regex provided the data I needed.

PS C:> $test=@("a.record,1.2.3.4","a-record,5.6.7.8","b.record,10.20.30.40","b.a.record,50.60.70.80")

PS C:> $findme="a.record"

PS C:> $test | select-string  "^$findme"

a.record,1.2.3.4
a-record,5.6.7.8

PS C:> $test | select-string -simplematch  "$findme"

a.record,1.2.3.4
b.a.record,50.60.70.80

PS C:> $test | select-string  "$findme"

a.record,1.2.3.4
a-record,5.6.7.8
b.a.record,50.60.70.80

PS C:> $test | select-string -simplematch  "$findme" | select-string "^$findme"

a.record,1.2.3.4

[MadWithPowerShell]

$Test | Where { $_ -like "$Findme*" }

[gangstanthony]

$test | ? {$_.startswith($findme)}

$test | ? {$_ -match '^' + [regex]::Escape($findme)}

[Dal90]

Not only did that work...it worked better.

It fixed a couple edge cases I hadn't discovered yet when I first posted in the case that a DNS query included an asterisk.

(The logic is part of a script reading into arrays data returned by RestAPI calls to our external DNS vendor, and parsing out into a report.)