How to change the element of an array?
$array = 1, 2,3, 4, 5
$array.Item(0) = 100
$array
How to sort an array ?
Use the static sort method from array class
$a = 1,3, 4,2
[array]::sort($a)
How to display Loaded and available Modules in Powershell?
Use the
Get-Module cmdlet to display loaded
To see the path of the module
Get-Module | select path
To list the modules,
Get-Module -Listavailable
How to open a pipeline results in editor?
dir | Out-File result.txt; notepad result.txt
How to list all parameters of parametersets?
PS C:\Users\sankar> (Get-Command Get-Date).parametersets | foreach {$_.parameters} | foreach {$_.name}
How to check the folder counts ?
We can find the number of files available on desktop this way
PS C:\Users\sankar\Desktop> @(get-childitem -name *).count
35
In case if you want to exclude some files when counting.
@(Get-ChildItem -exclude *.txt).count
How to exclude the files from displaying?
Get-ChildItem -exclude *.txt
How to get all the child items from the container that has child items?
We should use -Recurse Parameter if we need to get all the child items from the container
get-childitem -Recurse $env:USERPROFILE\desktop
we can use -filter if we want to filter with some specified extension file like *.txt , *.docx etc
get-childitem -Recurse $env:USERPROFILE\desktop -filter *.txt
How to check the version of Powershell and .Net Framework?
PS C:\Users\sankar\Desktop> $PSVersionTable
Name Value
---- -----
CLRVersion 2.0.50727.5456
BuildVersion 6.1.7601.17514
PSVersion 2.0
WSManStackVersion 2.0
PSCompatibleVersions {1.0, 2.0}
SerializationVersion 1.1.0.1
PSRemotingProtocolVersion 2.1
To check version for .Net Framework
PS C:\Windows\Microsoft.NET\Framework> dir
Directory: C:\Windows\Microsoft.NET\Framework
Mode LastWriteTime Length Name
---- ------------- ------ ----
d---- 3/3/2012 8:27 AM v1.0.3705
d---- 7/13/2009 10:20 PM v1.1.4322
d---- 8/4/2012 9:22 AM v2.0.50727
d---- 2/17/2011 9:25 PM v3.0
d---- 3/3/2012 8:27 AM v3.5
-a--- 11/4/2010 6:57 PM 86864 NETFXSBS10.exe
-a--- 3/3/2012 2:50 AM 41392 netfxsbs12.hkf
-a--- 6/10/2009 4:22 PM 13648 sbscmp10.dll
-a--- 6/10/2009 4:22 PM 13648 sbscmp20_mscorwks.dll
-a--- 6/10/2009 4:22 PM 13648 sbscmp20_perfcounter.dll
-a--- 6/10/2009 4:22 PM 11104 sbs_diasymreader.dll
-a--- 6/10/2009 4:22 PM 11088 sbs_iehost.dll
-a--- 6/10/2009 4:22 PM 11112 sbs_microsoft.jscript.dll
-a--- 6/10/2009 4:22 PM 11656 sbs_microsoft.vsa.vb.codedomprocessor.dll
-a--- 6/10/2009 4:22 PM 11096 sbs_mscordbi.dll
-a--- 6/10/2009 4:22 PM 11096 sbs_mscorrc.dll
-a--- 6/10/2009 4:22 PM 11096 sbs_mscorsec.dll
-a--- 6/10/2009 4:22 PM 11120 sbs_system.configuration.install.dll
-a--- 6/10/2009 4:22 PM 11088 sbs_system.data.dll
-a--- 6/10/2009 4:22 PM 11112 sbs_system.enterpriseservices.dll
-a--- 6/10/2009 4:22 PM 11080 sbs_VsaVb7rt.dll
-a--- 6/10/2009 4:22 PM 11104 sbs_wminet_utils.dll
-a--- 6/10/2009 4:22 PM 13648 SharedReg12.dll
To Create New Item Using Powershell
C:\Users\Sankar> New-Item <File Name> -ItemType File
PS C:\Users\sankar\Desktop> 1..5 | %{New-Item
-Name "$_.txt" -Value (Get-Date).tostring() -ItemType file}
NULL Value and Parameter Type
PS C:\> Get-ChildItem $env:windr | ?{$_.length -eq $null}
Directory: C:\
Mode LastWriteTime Length Name
---- ------------- ------ ----
d---- 7/17/2012 2:11 PM Intel
d---- 7/14/2009 8:07 AM PerfLogs
d-r-- 11/12/2012 1:53 PM Program Files
d---- 8/28/2012 2:43 AM Quarantine
d---- 7/18/2012 12:02 AM source
d-r-- 10/17/2012 8:25 PM Users
d---- 12/7/2012 3:50 PM Windows
function NULLValue
{
param
(
[string]$a = $( throw "Missing: parameter a"),
$b = $( throw "Missing: parameter b")
)
if ($a -eq $null) { Write-Host "a is null" } else { write-Host "a is not null" }
if ($b -eq $null) { Write-Host "b is null" } else { Write-Host "b is not null" }
}
If I call this function with: NULLValue $null $null
I will get the following result:
a is not null
b is null
How to round the number?
Use static Round method using math Class as mentioned below
