switch [-regex|-wildcard|-exact][-casesensitive] ( <value> ) { <string>|<number>|<variable>|{ <expression> } {<statement list>} <string>|<number>|<variable>|{ <expression> } {<statement list>} ... default {<statement list>} } 语法2:Syntax...
The valuedefaultis reserved for the action used when there are no other matches. The$_automatic variable contains the value of the expression passed to theswitchstatement and is available for evaluation and use within the scope of the<result-to-be-matched>statements. ...
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When specifying-regex, the match clauses that are strings are treated as regular expressions. The switch statement also sets the$matchesautomatic variable. When specifying-file, PowerShell treats the input as a file name, to read input from, rather than as a value statement. Note the use of ...
default {"The color could not be determined."} And there you have it: the Windows PowerShell switch statement. When we run the preceding script, the following message is echoed back to the screen: The color is orange. Using Wildcards with the Switch Statement ...
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It is always a best practice when using the Switch statement to create a default action. If the script is not running with the –debug switch, the script will print out the value of the $action variable and tell the user to use either Start or Stop. If it is running with the debug ...
Type:SwitchParameter Position:Named Default value:False Required:False Accept pipeline input:False Accept wildcard characters:False -Context Captures the specified number of lines before and after the line that matches the pattern. If you enter one number as the value of this parameter, that number...
of iterations performing significant work. As of PowerShell 7.1, runspaces from a runspace pool are reused by default. TheThrottleLimitparameter sets the runspace pool size. The default runspace pool size is 5. You can still create a new runspace for each iteration using theUseNewRunspaceswitch....
Fine, but how do we do that in a script that will work for any INI file? Easy:“switch -regex” (get-help switch). To figure out if a line is a comment, section, or key, we will use aregular expressionwith theswitchstatement. ...