Syntax <condition> ? <if-true> : <if-false> 三元运算符的行为类似于简化if-else语句。 计算<condition>表达式,并将结果转换为布尔值,以确定接下来应计算哪个分支: 如果<condition>表达式为 true,则执行<if-true>表达式 如果<condition>表达式为 false,则执行<if-false>表达式 ...
statement makes a WMI call to remote eystem to see if the WinRM service is running and if it isn't running it starts the service so the PSSession can be run $restartPSSession = $false $regservPSSession = Get-WmiObject -ComputerName $_ -Class Win32_Service -Filter "Name='WinRM...
If File exists then copy it script powershell If is not recognized as the name of a cmdlet? if not contains If statement based on day of the week evaluating despite being false If Test-Connection do these action else exit. If variable is null or empty skip in script If with multiple c...
$grade = 92 if ($grade -ge 90) { "Grade A" } elseif ($grade -ge 80) { "Grade B" } elseif ($grade -ge 70) { "Grade C" } elseif ($grade -ge 60) { "Grade D" } else { "Grade F" } 8.4 迴圈語句 8.4.1 while 語句 語法: Syntax 複製 while-statement: while new-...
match, theGet-ChildItemcommand returns nothing and assigns nothing to$textFiles, which is considered$falsein a boolean context. If one or moreFileInfoobjects are assigned to$textFiles, the conditional evaluates to$true. You can work with the value of$textFilesin the body of theifstatement. ...
null coalescing operator removes the need forifandelsestatements if you want to get the value of a statement if it’s not $null or return something else if it is $null. Note that this doesn’t replace the check for a boolean value of true or false, it’s only checking if the ...
Syntax PowerShellCopy Invoke-Sqlcmd[-ServerInstance <PSObject>] [-Database <String>] [-Encrypt <String>] [-EncryptConnection] [-Username <String>] [-AccessToken <String>] [-Password <String>] [-Credential <PSCredential>] [[-Query] <String>] [-QueryTimeout <Int32>] [-ConnectionTimeout...
The PDF files in this download are short-form Quick Reference (also called "cheat sheet") guides for IT professionals, developers, and scripting enthusiasts who want to learn tips, shortcuts, common operations, limitations, and proper syntax for using Windows PowerShell 4.0, Windows PowerShell De...
Syntax PowerShellCopy Select-String[-Culture <String>] [-Pattern] <String[]> [-Path] <String[]> [-SimpleMatch] [-CaseSensitive] [-Quiet] [-List] [-NoEmphasis] [-Include <String[]>] [-Exclude <String[]>] [-NotMatch] [-AllMatches] [-Encoding <Encoding>] [-Context <Int32[]>] ...
The search criteria for the Get-MoveRequest cmdlet is a Boolean And statement. If you use multiple parameters, it narrows your search and reduces your search results. You need to be assigned permissions before you can run this cmdlet. Although this topic lists all parameters for the cmdlet, ...