Sometimes you need to save some data in to a tempfile. And instead of creating a ownen file for this you could use the .NET function to create a really tempfile in the tempfile directory.
This is the how you can create a new tempfile:
$tempFile = [System.IO.Path]::GetTempFileName()
And now you can parse data into this file.
This is a Quick Powershell note how you can use Powershell to read RSS feeds. This is pretty simple you can use the .NET class WebClient.
$rssFeed = [xml](New-Object System.Net.WebClient).DownloadString('http://www.thomasmaurer.ch/feed/')
$rssFeed.rss.channel.item | Select-Object title -First 5
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Event Type: Error
Event Source: ASP.NET 2.0.50727.0
Event Category: None
Event ID: 1093
Date: 13.01.2011
Time: 11:11:50
User: N/A
Computer: Server01
Description:
Unable to get the private bytes memory limit for the W3WP process. The ASP.NET cache will be unable to limit its memory use, which may lead to a process restart. Error: 0×80070005
For more information, see Help and Support Center at http://go.microsoft.com/fwlink/events.asp.
==================
This Error is caused by the a know issue with permissions of the IIS metabase. The metabse ACL’s do not include the IIS_WPG group on the W3SVC/AppPools part in the metabase.
A friend asked me if Powershell can do simple file up and downloads. My answer was, yes of course, very easy. So this is a post with a little information about how you can do a FTP Upload or a FTP Download using Powershell. To be clear, of course you can do much more. But this post should show you the basic function of FTP transfers in Powershell based on the .NET Framework.
Download File:
# Config
$Unsername = "FTPUSER"
$Password = "P@assw0rd"
$LocalFile = "C:\Temp\file.zip"
$RemoteFile = "ftp://thomasmaurer.ch/downloads/files/file.zip"
# Create FTP Rquest Object
$FTPRequest = [System.Net.FtpWebRequest]::Create("$RemoteFile")
$FTPRequest = [System.Net.FtpWebRequest]$FTPRequest
$FTPRequest.Method = [System.Net.WebRequestMethods+Ftp]::UploadFile
$FTPRequest.Credentials = new-object System.Net.NetworkCredential($Username, $Password)
$FTPRequest.UseBinary = $true
$FTPRequest.UsePassive = $true
# Read the File for Upload
$FileContent = gc -en byte $LocalFile
$FTPRequest.ContentLength = $FileContent.Length
# Get Stream Request by bytes
$Run = $FTPRequest.GetRequestStream()
$Run.Write($FileContent, 0, $FileContent.Length)
# Cleanup
$Run.Close()
$Run.Dispose()
Upload File:
# Config
$Unsername = "FTPUSER"
$Password = "P@assw0rd"
$LocalFile = "C:\Temp\file.zip"
$RemoteFile = "ftp://thomasmaurer.ch/downloads/files/file.zip"
# Create a FTPWebRequest
$FTPRequest = [System.Net.FtpWebRequest]::Create($RemoteFile)
$FTPRequest.Credentials = New-Object System.Net.NetworkCredential($Username,$Password)
$FTPRequest.Method = [System.Net.WebRequestMethods+Ftp]::DownloadFile
$FTPRequest.UseBinary = $true
$FTPRequest.KeepAlive = $false
# Send the ftp request
$FTPResponse = $FTPRequest.GetResponse()
# Get a download stream from the server response
$ResponseStream = $FTPResponse.GetResponseStream()
# Create the target file on the local system and the download buffer
$LocalFileFile = New-Object IO.FileStream ($LocalFile,[IO.FileMode]::Create)
[byte[]]$ReadBuffer = New-Object byte[] 1024
# Loop through the download
do {
$ReadLength = $ResponseStream.Read($ReadBuffer,0,1024)
$LocalFileFile.Write($ReadBuffer,0,$ReadLength)
}
while ($ReadLength -ne 0)
This should show you how you can download a file with Powershell. This is not a script or function you should use. It just is the the easyiest way to download a file with Powershell. If I have enough time I will create a function for downloading files.
$Url = "http://www.thomasmaurer.ch/ps.txt" $Path = "C:\temp\ps.txt" $Username = "" $Password = "" $WebClient = New-Object System.Net.WebClient $WebClient.Credentials = New-Object System.Net.Networkcredential($Username, $Password) $WebClient.DownloadFile( $url, $path )
In one of my last scripts I needed random numbers in Powershell. Now this Blog post should show you how you can generate random numbers in Powershell very simple.
To create random numbers in Powershell you can use the .NET Framework class “System.Random”. First you have to create a new object.
[Object]$Random = New-Object System.Random
Lets checkout the $Random object:
$Random | Get-Member TypeName: System.Random Name MemberType Definition ---- ---------- ---------- Equals Method bool Equals(System.Object obj) GetHashCode Method int GetHashCode() GetType Method type GetType() Next Method int Next(), int Next(int minValue, int maxValue), int Next(int maxValue) NextBytes Method System.Void NextBytes(byte[] buffer) NextDouble Method double NextDouble() ToString Method string ToString()
Now with this object you can now create random numbers very simple:
Create a random double number:
$Random.NextDouble()
Create a random int number:
$Random.Next()
Create a random number between 1 or 10:
$Random.Next(1,11)
Create a random number between 12 or 25:
$Random.Next(12,26)
Create a random number 1 or 0:
$Random.Next(0,2)