Example 3: Compute the hash value of a stream For this example, we are usingSystem.Net.WebClientto download a package from thePowerShell release page. The release page also documents the SHA256 hash of each package file. We can compare the published hash value with the one we calculate wit...
Open PowerShelland type the command above to test it. It calculates the SHA256 hash value for the given file and produces the output as follows. To calculate the hash value other than SHA256, use the switch -Algorithm. For example, to get the MD5 hash value, execute the following command...
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[hashtable]$Properties) {foreach($Propertyin$Properties.Keys) {$this.$Property=$Properties.$Property} }# Method to calculate reading time as 2 minutes per page[timespan] GetReadingTime() {if($this.PageCount-le0) {throw'Unable to determine reading time from page count.'}$Minutes=$this....
# Add a custom property to calculate the size in KiloBytes of each FileInfo # object you pass in. Use the pipeline variable to divide each file's length by # 1 KiloBytes $size = @{label="Size(KB)";expression={$_.length/1KB}} # Create an additional calculated property with the ...
之所以神奇,是因为PowerShell本身做了很多辛苦的工作,按照优先级: 直接赋值:输入类型和期望类型一致,可以直接交付。 基于语言的类型转换:当目标类型为void,Boolean,String,Array,Hashtable,PSReference(i.e.: [ref]),XmlDocument,Delegate和Enum时,基于语言的类型转换(.NET提供的)开始工作。 Parse 转换...
Inside the curly braces we specify the two elements of our hash table: the property Name (in this case, Kybtes) and the property Expression (that is, the script block we’re going to use to calculate the property value). The Name property is easy enough to specify; we simply assign a...
h : Calculate hash values for files i : Show information about supported formats l : List contents of archive rn : Rename files in archive t : Test integrity of archive u : Update files to archive x : eXtract files with full paths ...
Write-Debug "Try to calculate." "3.1415926" Write-Debug "Done." } # Debug调试信息只会在调试模式下被输出 $value=Test # 3.1415926 #如果你想通过显示调试信息调试函数,可以开启调试模式 $DebugPreference="Continue" $value=Test # 调试: Try to calculate. ...
Arithmetic Operators +, -, *, /, % Calculate numeric values Assignment Operators %=, +=, -=, =, *=, /= Helps to assign, change, or change values to variables Comparison Operators -le, -ne, -gt, -lt, -eq, -ge Binary operators that compare two integer or string values that return...