So this works when the file name maintains this consistency, but I need to use it to get a file that has an inconsistent value, appended to the end.
I would look at using WinSCP's. Net library , which provides a more complete set of FTP commands. Or you could use FtpWebRequest , which also provides the functionality you're looking for since you can enumerate the remote files and then get the ones you want, but might be more cumbersome to use since all data transfers are streams.
C code is pretty portable to PowerShell, but it might be a bit steep for someone new so you might want to stick to WinSCP's. Net library. Another alternative is to build a script file and use ftp. Here is an old doc that tells you what to do. You'll want to use the mget command instead. One drawback is that you've got to write the password to a text file, but, well, you technically already do that anyways since it's in your PowerShell script.
You could do something like:. Additionally, a lot of your script could be optimized. You're doing some backflips to get some simple values. Get-Variable MyInvocation. The only reason you might need Get-Variable is to list assigned variables and to use dynamic variables -- that is, variables whose names you don't know until runtime I find it easier to read.
Stack Overflow for Teams — Collaborate and share knowledge with a private group. Create a free Team What is Teams? Collectives on Stack Overflow. Learn more. That is normally forbidden by webservers. Then you could parse the output and ask for specific files to be downloaded or all of them.
But I dont see any straight-forward way. This works fine but I cannot step through this content. When I put this content through a foreach loop it dumps every line at once. If I save it to a file then I can use System. File::ReadLines to steps through line by line but that only works if I download the file.
How can I accomplish this without downloading the file? You can't parse text files with Invoke-WebRequest. If the text file is unstructured you can parse it with regex.
More information about using regex in PowerShell can be found here and here. I am trying to download files from a site, sadly they are be generated to include the Epoch Unix timestamp in the file name. Now as I am unable to replace the Epoch Unix timestamp portion of the file name with a wild card, I was wondering if there was a way to do the download based on the date modified field of the file? Thanks for this. I plan to use this along with task scheduler to download a fresh file every week.
However, the new file overwrites the older one. Is there a way to preserve the older file as well? Ken - You should be able to relatively easily - however, you'd have to download it first, since you can't get the file properties until you download it. You could download it to a temp location, grab the LastWriteTime stamp and parse it to create your new name.
Sumit - You have a similar situation. You'll also need to manage the old copies so you don't fill up your disk. Your email address will not be published.
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Contents of this article. Related Articles. GitOps vs. Shane 2 years ago. Hi Michael - great article. As you can see, the Get-Credential cmdlet prompted a PowerShell credential request. This time, using the credential with Invoke-WebRequest resulted in a successful download. A crucial thing to remember when using Invoke-WebRequest in Windows PowerShell is that, by default, this cmdlet uses the Internet Explorer engine to parse data.
The error below may happen when using Invoke-WebRequest on computers without the Internet Explorer in it. Specify the UseBasicParsing parameter and try again. Starting with PowerShell Core 6. As such, the -UseBasicParsing parameter is no longer necessary. When it comes to downloading files straight from the web, Invoke-RestMethod is an excellent contender.
Do not be deceived into thinking otherwise. There is not much difference between using Invoke-RestMethod and Invoke-WebRequest when used for downloading files from a direct web link. To download a file using Invoke-RestMethod , use the syntax below.
If the source requires authentication, you can pass the credentials using the -Credential parameter. Typically, you should avoid using HTTP sources for security. Start-BitsTransfer is designed specifically for transferring files between client and server computers. Some of these benefits are:. The fundamental way to use Start-BitsTransfer in PowerShell to download a file is to specify a source and destination. Suppose the destination is not specified, Start-BitsTransfer downloads and saves the file to the current working directory.
Name the file filelist. The first column should contain the link to the source, while the second column must contain the destination path. The file contents would like the one below. Once the CSV file is ready, use the command below to begin the file download.
Refer to the demo below to see how the code above works. As you can see, the download starts, and you see the download progress. The PowerShell prompt is not available during the download process. Suppose you want to start the download process as a background job. To do so, you only have to add the -Asynchronous switch at the end of the Start-BitsTransfer command.
Initially, the state of each job would show c onnecting. To check the download job status, use the Get-BitsTransfer cmdlet. PowerShell is based on. NET, and its nature makes it capable of leveraging the power of.
NET itself. If you want to know more about these two.
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