Mastering Windows PowerShell Scripting - Third Edition

Match and not match

The -match and -notmatch operators return true or false when testing strings:

'The cow jumped over the moon' -match 'cow'  # Returns true 
'The       cow' -match 'The +cow'            # Returns true 

In the preceding example, the + symbol is reserved; it indicates that The is followed by one or more spaces before cow.

Match is a comparison operator Like the other comparison operators, if match is used against an array, it returns each matching element instead of true or false. The following comparison will return the values one and three: "one", "two", "three" -match 'e'

In addition to returning a true or false value about the state of the match, a successful match will add values to a reserved variable, $matches. For example, the following ...