Get-MyVariable
SYNOPSIS
Get all user-defined variables.
SYNTAX
Get-MyVariable [[-Scope] <String>] [-NoTypeInformation] [<CommonParameters>]
DESCRIPTION
This function will return all variables not defined by PowerShell or by this function itself. The default is to return all user-created variables from the global scope but you can also specify a scope such as script, local, or a number 0 through 5. The command will also display the value type for each variable. If you want to suppress this output use the -NoTypeInformation switch.
EXAMPLES
EXAMPLE 1
PS C:\> Get-MyVariable
NName Value Type
---- ----- ----
a bits ServiceController
dt 10/22/2020 10:49:38 AM DateTime
foo 123 Int32
r {1, 2, 3, 4...} Object[]
...
Depending on the value and how PowerShell chooses to display it, you may not see the type.
EXAMPLE 2
PS C:\> Get-MyVariable | Select-Object name,type
Name Type
---- ----
a ServiceController
dt DateTime
foo Int32
r Object[]
EXAMPLE 3
PS C:\> Get-MyVariable | Export-Clixml myvar.xml
PS C:\> import-clixml .\myvar.xml |
ForEach-Object {set-variable -Name $_.name -Value $_.value}
You can then import this XML file in another session to restore these variables.
EXAMPLE 4
PS C:\> function foo {
c:\scripts\Get-MyVariable2.ps1;
$a=4;$b=2;$c=$a*$b;
Get-MyVariable -notypeinformation -scope 1 -verbose;
$c
}
PS C:\> foo
VERBOSE: Getting system defined variables
VERBOSE: Found 49
VERBOSE: Getting current variables in 1 scope
VERBOSE: Found 27
VERBOSE: Filtering variables
Name Value
---- -----
a 4
b 2
c 8
VERBOSE: Finished getting my variables
8
This sample function dot sources the script with this function. Within the function, Get-MyVariable is called specifying scope 1, or the parent scope. Scope 0 would be the scope of the Get-MyVariable function. Here's the result.
EXAMPLE 5
PS C:\> Get-MyVariable | where {$_.type -eq "Scriptblock"} |
Select-Object name,value
Name Value
---- -----
bigp ps | where {$_.ws -gt 100mb}
dirt Param(\[string\]$Path=$env:temp) Get-C...
disk Param (\[string\]$computername=$env:co...
run gsv | where {$_.status -eq "running"}
up Param(\[string\]$computername=$env:com...
Get all my variables that are scriptblocks.
PARAMETERS
-Scope
The scope to query. The default is the Global scope but you can also specify Local, Script, Private or a number between 0 and 3 where 0 is the current scope, 1 is the parent scope, 2 is the grandparent scope, and so on.
Type: System.String
Parameter Sets: (All)
Aliases:
Required: False
Position: 1
Default value: Global
Accept pipeline input: False
Accept wildcard characters: False
-NoTypeInformation
If specified, suppress the type information for each variable value.
Type: System.Management.Automation.SwitchParameter
Parameter Sets: (All)
Aliases:
Required: False
Position: Named
Default value: False
Accept pipeline input: False
Accept wildcard characters: False
CommonParameters
This cmdlet supports the common parameters: -Debug, -ErrorAction, -ErrorVariable, -InformationAction, -InformationVariable, -OutVariable, -OutBuffer, -PipelineVariable, -Verbose, -WarningAction, and -WarningVariable. For more information, see about_CommonParameters.
INPUTS
None
OUTPUTS
System.Management.Automation.PSVariable
NOTES
Learn more about PowerShell: http://jdhitsolutions.com/blog/essential-powershell-resources/
An earlier version of this function is described at http://jdhitsolutions.com/blog/2012/05/get-my-variable-revisited