Powershell下分析Diskpart.exe輸出資料

參考資料:

• Automating DiskPart with Windows PowerShell: Part 1
• Automating DiskPart with Windows PowerShell: Part 2
• Automating DiskPart with Windows PowerShell: Part 3
• Automating DiskPart with Windows PowerShell: Part 4

不同語系(locale) 的Diskpart.exe的輸出格式會有些許不同,下面Code是我在Windows 8.1中文版試過可行的,若要英文版請參考上面連結

Function GET-DISKPARTINFO() 
{ 
[cmdletbinding] 
# Build Script for LIST DISK in DISKPART 
 
New-item -Name listdisk.txt -Itemtype file -force | out-null 
add-content -path listdisk.txt "list disk" 
$listdisk=(diskpart /s listdisk.txt) 

# Get Total Disks outputted.   
# Yes.  It's as simple as "Count the lines on the screen" 
 
$totaldisk=$listdisk.count-8 

# Step through each line that will contain disk information 
for ($d=0;$d -lt $totaldisk;$d++) 
{ 
# Pull the Partition size data and the DiskNumber 
 
$size=$listdisk[8+$d].substring(25,9).replace(" ","") 
$diskid=$listdisk[8+$d].substring(5,5).trim() 

# Create a script to pull detail on the existing disk 
 
new-item -Name detail.txt -ItemType file -force | out-null 
add-content -Path detail.txt "select disk $diskid" 
add-content -Path detail.txt "detail disk" 
 
# Capture the output from Diskpart for the Detail 
 
$Detail=(diskpart /s detail.txt) 

# Parse the data for the partition 
 
$Model=$detail[8] 
$type=$detail[10].substring(9) 
$DriveLetter=$detail[-1].substring(12,1) #(15,1)

# Grab the partition sizing data 
 
$length=$size.length 
$multiplier=$size.substring($length-2,2) 
$intsize=$size.substring(0,$length-2) 
 
# Convert the Partition "KB/MB/GB" to a real value 
switch($multiplier) 
    { 
        KB { $mult=1KB } 
        MB { $mult=1MB } 
        GB { $mult=1GB } 
    } 
 
# Calculate the size of the Disk or Partition 
$disktotal=([convert]::ToInt16($intsize,10))*$mult 
  
# Return the Object back to the real world Neo 
[pscustomobject]@{DiskNum=$diskid;Model=$model;Type=$type;DiskSize=$disktotal;DriveLetter=$DriveLetter} 
} 
} 

輸出:

DiskNum     : 0
Model       : VMware, VMware Virtual S SCSI Disk Device
Type        :  SAS
DiskSize    : 64424509440
DriveLetter : C

DiskNum     : 1
Model       : USB FLASH DRIVE USB Device
Type        :  USB
DiskSize    : 4009754624
DriveLetter : E

Powershell Environment Variables

http://ss64.com/ps/syntax-env.html
https://technet.microsoft.com/en-us/library/ff730964.aspx

Environment Variables

Windows environment variables are visible as a PS drive called Env:

Get-ChildItem Env:

PowerShell Providers

In addition to environment variables, PowerShell providers also provide access to other data and components in a similar way - resembling a file system drive. This allows you to access many different types of data in a consistent way.

Built-in Providers

Alias - Windows PowerShell aliases {Alias}
Certificate - X509 certificates for digital signatures {cert}
Environment - Windows environment variables {Env}
FileSystem - File system drives, directories and files {filesystem}
Function - Windows PowerShell functions {Function}
Registry - Windows registry {HKLM, HKCU}
Variable - Windows PowerShell variables {Variable}

To create more permanent environment variables (i.e., user-level or machine-level) you need to use the .NET Framework and the SetEnvironmentVariable method. For example, this command creates a user-level environment variable named TestVariable:

[Environment]::SetEnvironmentVariable("TestVariable", "Test value.", "User")

以上需restart才有作用(存於Registry內)


Set-Item Env:TestVariable "Test Value2"

以上restart後資料會消失