OperatorReturns True when... -gt The left-hand side is greater -ge The left-hand side is greater or equal -lt The left-hand side is smaller -le The left-hand side is smaller or equal In the following examples,
Operator Description --- = Equal != Not equal <> Not equal < Less than > Greater than <= Less than or equal >= Greater than or equal LIKE Wildcard match IS Evaluates null ISNOT Evaluates not null ISA Evaluates a member of a WMI class 还有其他运算符,但这些运算符用于进行比较。 例如...
Notice that the not equal to operator (-ne) is replaced by the equal to operator (-eq). PowerShell Kopiér PS> $x = 1,2,78,0 PS> do { $count++; $a++; } until ($x[$a] -eq 0) PS> $count 3 The following example writes all the values of an array, skipping any value...
当运算符的输入(左侧参数)是一个单标量对象时,-match 和 -notmatch 运算符填充 $Matches 自动变量。当输入是标量(多个值)时,-match 和 notmatch 运算符返回布尔值,并将 $Matches 自动变量的值设置为参数的匹配项目。如果输入是一个集合,则 -match 和 -notmatch 运算符返回该集合中的匹配成员,但运算符不会填...
-ea operator -ErrorAction:SilentlyContinue parameter is not being respected & $error variable not updated -ExpandProperty & Export CSV !!! powershell script to add a word in the beginning of the text file - URGENT !!! 'A positional parameter cannot be found that accepts argument '$null'. ...
Adding thecleanblock is a breaking change. Becausecleanis parsed as a keyword, it prevents users from directly calling a command namedcleanas the first statement in a script block. However, it's not likely to be a problem. The command can still be invoked using the call operator (& clean...
Powershell Operator 算数运算:+、-、*、/ 关系运算:==、!=、<、>、=<、>= 逻辑运算:||、&&、! PowerShell’s Conditional or Comparison Operators Run Scripts and Functions and Script Block 1. @{}是什么意思? 2.Scripts ### ## ## Get-Arguments.ps1 ## ## From Windows PowerShell Cookbook ...
for the user to select an option and press ENTER. When that happens the user’s selection is stored in a variable named $result. (Actually, what gets stored is the index number of the option selected. In this case, $result will equal 0 if the user picksYesand 1 if the user picksNo...
The -ne operator means not equal.Example 6PowerShell Copy Get-MailboxStatistics -Database "Mailbox Database" -StoreMailboxIdentity 3b475034-303d-49b2-9403-ae022b43742d This example retrieves the mailbox statistics for a single disconnected mailbox. The value for the StoreMailboxIdentity ...
If you work with database types, you may get back a[dbnull]::Valuewhich is equivalent to$nullwithin the database, but in PowerShell, this was not equal to$nullso you can’t compare it directly. This change fromJoel Sallowallows you to compare both[dbnull]::Valueand[nullstring]::Valu...