This document provides examples of using Powershell to summarize processes. It demonstrates how to use functions, script blocks, New-Object, Format-Table, and ConvertTo-Html. Examples are given to retrieve process information, create objects to store the data, and format the output in tables or HTML. Filter functions are also introduced using begin, process, and end blocks to filter input.

1. Powershell
JASON

2. Powershell

Function

ScriptBlock

New-Object

Format-Table

Convert-Html

3. 輸入某數，算出該數階乘(Factorial)

Function ?

ScriptBlock ?

4. ScriptBlock

$block = { Write-Host “Hello ScriptBlock” }

Execute

&$block

5. 取得目前近 5 分鐘內的 Process info

Get-Process | Get-RecentlyStarted

利用 begin、process、end

利用 filter function

6. Filter Function
function Get-FileSize
{
begin
{
……
}
process
{
…..
}
end
{
….
}
}
dir *.txt | Get-FileSize

8. Example1
$process = Get-Process | select -First 10
$list = @()
foreach($p in $process)
{
$info = New-Object PSObject
$info | Add-Member -type NoteProperty -name Name -Value $p.ProcessName
$info | Add-Member -type NoteProperty -name Pid -Value $p.Id
}
$list += $info
$list

9. Example2
$process = Get-Process | select -First 10
$list = @()
foreach($p in $process)
{
$info = New-Object PSObject -Property @{ Name = $p.ProcessName; Pid = $p.Id }
$list += $info
}
$list

10. Example3
$process = Get-Process | select -First 10
$list = $process | select @{Name=“Name”;Expression= { $_.ProcessName} },
@{Name=“Pid”; Expression= { $_.Id } }
$list

11. Format-Table (ft)
$list | Format-Table -AutoSize

12. Format-List (fl)
$list | Format-List
$list | Format-List -GroupBy Name

13. ConvertTo-Html (cth)
$list | ConvertTo-HTML -cssuri "Layout.css"
-title "Process"
-body "<H2>Process Info</H2>"
-pre (get-date)
-post (get-date)