This Powershell script that downloads each item in a list of URLs (of SharePoint 2013 pre-requisites) to a user-specified location. This PowerShell Script use in a situation when you don’t have internet access (install sharepoint 2013 offline) in the SharePoint 2013 server.

All that you need Run this PowerShell Script as Administrator, write the destination path.)

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# This commands script file creates a new BITS transfer job that downloads all Sharepoint 2013 Prerequisites files for Windows Server 2012 
# Author: Muawiyah Shannak (@MuShannak) 
# Blog: http://mushannak.blogspot.com/ 
# Last Update : 9/28/2013 
# Source: http://gallery.technet.microsoft.com/Script-to-SharePoint-2013-702e07df 
 
$DestinationFolder = Read-Host -Prompt "Please enter the destination path for Sharepoint 2013 Prerequisites files" 
 
# Note: The Prerequisite Files URLs are subject to change at Microsoft's discretion - check http://technet.microsoft.com/en-us/library/cc262485(v=office.15).aspx and update the links. 
$FilesUrlList = (  
        "http://download.microsoft.com/download/9/1/3/9138773A-505D-43E2-AC08-9A77E1E0490B/1033/x64/sqlncli.msi"# SQL Server 2008 R2 SP1 Native Client 
        "http://download.microsoft.com/download/8/F/9/8F93DBBD-896B-4760-AC81-646F61363A6D/WcfDataServices.exe"# Microsoft WCF Data Services 5.0 
        "http://download.microsoft.com/download/9/1/D/91DA8796-BE1D-46AF-8489-663AB7811517/setup_msipc_x64.msi"# Microsoft Information Protection and Control Client (MSIPC) 
        "http://download.microsoft.com/download/E/0/0/E0060D8F-2354-4871-9596-DC78538799CC/Synchronization.msi"# Microsoft Sync Framework Runtime v1.0 SP1 (x64)  
        "http://download.microsoft.com/download/0/1/D/01D06854-CA0C-46F1-ADBA-EBF86010DCC6/r2/MicrosoftIdentityExtensions-64.msi"# Windows Identity Extensions 
        "http://download.microsoft.com/download/D/7/2/D72FD747-69B6-40B7-875B-C2B40A6B2BDD/Windows6.1-KB974405-x64.msu"# Windows Identity Foundation (KB974405) 
        "http://download.microsoft.com/download/A/6/7/A678AB47-496B-4907-B3D4-0A2D280A13C0/WindowsServerAppFabricSetup_x64.exe"#Windows Server AppFabric 
        "http://download.microsoft.com/download/7/B/5/7B51D8D1-20FD-4BF0-87C7-4714F5A1C313/AppFabric1.1-RTM-KB2671763-x64-ENU.exe" # CU 1 for AppFabric 1.1 (KB2671763) 
             ) 
 
function CreateDestinationFolder() 
{ 
    Try 
    { 
        ## Return true if the Destination Folder exists, otherwise return false 
        If (!(Test-Path "$DestinationFolder" -pathType container)) 
        { 
            ##Creates the destination folder if it does not exist 
            New-Item $DestinationFolder -ItemType Directory 
        } 
    } 
    Catch 
    { 
        Write-Host "An error occurred creating destination folder (`'$DestinationFolder`'), Please check the path,and try again." 
        Pause 
        break 
    } 
} 
 
function DownloadSP2013Files() 
{ 
    Import-Module BitsTransfer 
    Write-Host "BitsTransfer Module is loaded" 
    Write-Host "Downloading..." 
 
    ForEach ($FileUrl in $FilesUrlList) 
    { 
        ## Get the file name 
        $DestinationFileName = $FileUrl.Split('/')[-1] 
     
        Try 
        { 
             
            ## Return true if the file exists, otherwise return false 
            If (!(Test-Path "$DestinationFolder\$DestinationFileName")) 
            { 
                Write-Host "`'$FileUrl`' ..." 
                Start-BitsTransfer -Source $FileUrl -Destination $DestinationFolder\$DestinationFileName -Priority High -ErrorVariable err 
                If ($err) {Throw ""} 
            } 
            Else 
            { 
                Write-Host "File $DestinationFileName already exists, skipping..." 
            } 
        } 
        Catch 
        { 
            Write-Warning "An error occurred downloading `'$DestinationFileName`'" 
            break 
        } 
    } 
} 
 
function Pause($Message="Press any key to continue...") 
{ 
    Write-Host -NoNewLine $Message 
    $null = $host.UI.RawUI.ReadKey("NoEcho,IncludeKeyDown") 
    Write-Host "" 
} 
 
CreateDestinationFolder  
DownloadSP2013Files 
Pause