Powershell Regex cheat sheet

18 Nov 2016

Powershell / CheatSheets

A collection of regex’s that I always find myself looking up.

#Match while tagging match groups
'CowColour Brown' -match '(?<Attribute>\w+) (?<Value>\w+)' | out-null
$matches.Attribute
$matches.Value
#cowColour
#Brown

#Matching groups - your $matches object will have properties containing the valid matches
"Subnet:10.1.1.0/24" -match 'Subnet:(?<SiteSubnet>(?:\d{1,3}\.){3}\d{1,3}/\d+)'

#Replace to reformat a string 
'This is a wild test' -replace '.*(w[^ ]+).*','Not so $1'
#Not so wild

#Lazy matching (to prevent over-matching) use a ? after the + or *
"<h1>MyHeading</h1>" -replace '<([^/]+?)>','<cow>' -replace  '</([^/]+?)>','</cow>'
#<cow>MyHeading</cow>

#negative lookbehind
($DistinguishedName -split '(?<!\\),')[1..100] -join ','

Last Updated September 13