Note 5: Wildcards return more positives, but the base part must be correct. Note 4: Substitute -Match for -Like and the result would be ‘True’.Įxample 2b – Just the start of the string not enoughĮxample 2c – Wildcard * is useful for -LikeĮxample 2d – Wildcard* but the rest has to be correct With PowerShell’s -Like, both sides of the expression have to be the same, fortunately, you can employ the usual wildcards * and ?Įxample 2a – Having only part of the string is no good for -Like See more on PowerShell’s -Match comparisons » Example 2: -Like Conditional Operator \w is the equivalent of usingĬhallenge: Try -Match “\s” on “Guy Thomas” and then on “GuyThomas” Note 3: Too easy! Guy and Thomas are words. ![]() \s matches any white space character, such as tabs, spaces, and so forth. \w matches any word character, meaning letters and numbers. PowerShell recognizes the following character classes: You can use these for really wide-ranging searches. SolarWinds WMI Monitor Download 100% Free ToolĪdditional PowerShell Character Classes for -MatchĪ character class, listed below, is a broader form of wildcard, they represent an entire group of characters. Take the guesswork out of which WMI counters to use when scripting the operating system, Active Directory, or Exchange Server. Fortunately, SolarWinds have created a Free WMI Monitor for PowerShell so that you can discover these gems of performance information, and thus improve your PowerShell scripts. Windows Management Instrumentation (WMI) is one of the hidden treasures of Microsoft’s operating systems. Guy Recommends: Free WMI Monitor for PowerShell (FREE TOOL) Get-WmiObject -List | Where įor negative conditions, there is an alternative form called -Notmatch. Here is a real-life -Match example using WmiObject and a where clause, observe the Wildcard*. ![]() Note 2: Now that we introduce the wildcard ? in the 3rd position, and given that we get a match for the other 3 digits, the result is now ‘True’.Įxample 1e – WmiObject and Where, using * as a Wildcard Note 1: While Guy Thomas 1949 has ’19’, it does not have ‘1939’, thus returns False.Įxample 1d – Wildcard? Rides to the rescue Incidentally -Match, and the other PowerShell conditional operators, all have a negative form, for example -NotMatch.Įxample 1a – Match does not have to be at the beginningĮxample 1b – Naturally a completely wrong name is no good Match can use regular expressions for pattern matching. ![]() Moreover, the pattern does not have to be a complete, and this is the biggest benefit of match. The ‘match’ can be anywhere within the string. Please note: the above operators are in addition to the ubiquitous comparison operators, -eq, ‘If’ and ‘ElseIf‘. Topics for PowerShell’s Conditional Operators Have faith that you will be able to manipulate your data with one of this trio, and thus achieve the degree of pattern matching that you seek. My advice is to keep experimenting until you find the particular conditional operator that suits your circumstance. Match, -Like and -Contains are all similar PowerShell conditional operators, yet each has a subtle specialization. Introduction to: -Match -Like and -Contains Perhaps you are suffering from a common problem – too much information? If so, then choosing the most suitable PowerShell operator: -Match, -Like or -Contains will help you to distill the key facts. I think of PowerShell’s conditional operators as data filters. Introduction to PowerShell Conditional Operators
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