Hello how to format the expression like : Number+ GB
Code:
Get-NetAdapterStatistics| Select-Object Name, @{Name="RE"; Expression={ [System.Math]::Round($_.ReceivedBytes/1GB)}}
Hello how to format the expression like : Number+ GB
Code:
Get-NetAdapterStatistics| Select-Object Name, @{Name="RE"; Expression={ [System.Math]::Round($_.ReceivedBytes/1GB)}}
You could create it as a string in the Select-Object custom property or use Format-Table in the format specifier.
Get-NetAdapterStatistics|
Select-Object Name,
@{Name=“RE”; Expression={"$([system.math]::Round($_.ReceivedBytes/1GB)) GB"}}
Get-NetAdapterStatistics|
Format-Table Name,
@{Name=“RE”; Expression={$_.ReceivedBytes/1GB};f="0' GB'"}
What does it mean? $ before system:: round?
It prepare a string with dollars?
And this:.
f="0’ GB’
$()
is the sub-expression operator. It is useful when evaluating an inner expression inside of a string. f=
is short for formatString=
. The 0
is any element returned by the expression. GB
is just a string.
In double-quotes expressions proceeded by $ are evaluated and the result is inserted into the string. So in
"$([system.math]::Round($_.ReceivedBytes/1GB)) GB"
The subexpression
([system.math]::Round($_.ReceivedBytes/1GB))
is evaluated and it’s result is placed in the string. See about_quoting_rules documentation for more info.
Here’s some more references:
Get-Help About_Calculated_Properies:
Formatting types in .Net
Get-Help About_Operators
So what else can use in hashtable more? Name, expression, format-table ? and more?
In this case use them for calculated properties which can be used in Select-Object, Compare-Object, Group-Object, Measure-Object, Sort-Object, CovertTo-HTML and all the Format-* cmdlets. See about_calculated_properties. In PS 3.1 in greater you can also use them to create custom objects using the [pscustomobject] type accelerator (see about_object_creation and about_type_accelerators).