confused powershell beginner

[intel2012]

I am teaching myself to learn powershell, and gave myself a challege.  I am trying to make a script that does the following.  It needs to find all files with the following extensions:  .txt, .doc, .docx, and .ppt on my system that have not been modified in the last 90 days.  The output of the script should then be sent to a text file with the name of file, length of file and the last update date.  If someone could help me write this script, I would greatly appreciate it.  

[Nuluvius]

I am teaching myself to learn powershell, and gave myself a challege ... If someone could help me write this script, I would greatly appreciate it.

At the risk of stating the complete obvious... it won't be much of a challenge then will it.

[intel2012]

I know, being completely honest.  This is a homework question and my teacher said we can use any resources to complete the problem.

[dannytech357]

Try these links, they'll get you started:

http://stackoverflow.com/questions/19774097/powershell-script-for-finding-modified-date-of-a-file-folder

http://blogs.technet.com/b/heyscriptingguy/archive/2014/02/03/list-files-in-folders-and-subfolders-with-powershell.aspx

[Blake]

Somthing like:

Get-ChildItem -Path c:\ -Recurse -Include *.txt | Where-Object -FilterScript {$_.LastWriteTime -ge (Get-Date).AddDays(90)} | Select-Object -Property Name,Length,LastWriteTime | Out-File -FilePath C:\dir\somthing.txt

this will have errors, I am not going to make it that easy for you.

[Nuluvius]

I am teaching myself to learn powershell, and gave myself a challege.

I know, being completely honest.  This is a homework question...

So you lied.

I am not going to make it that easy for you.

@Blake and you're an idiot for helping him.

[madknight3]

I know, being completely honest.  This is a homework question and my teacher said we can use any resources to complete the problem.

 

At least be honest from the beginning. People here will still help you even though it's homework. Now there's some people who wont help you because you lied.

 

Also, show that you've put in some effort. This is another reason why someone might not help you. Explain what parts you don't understand. Show what you've done so far, even if it's not working. We want to help you learn to code and solve problems, not just give you the answer so you can copy/paste it for a grade. 

 

If you don't know where to start, break the problem down into simpler problems and work at solving them before piecing them together.

1. How can I find all files in a directory
2. How can I find all files in a directory with a specific extension
3. How can I see when a file was last modified
4. etc

[Nuluvius]

Now there's some people who wont help you because you lied.

Nuh uh uhh I dun like bein lied to, not wun itty bit!

[Blake]

@Blake and you're an idiot for helping him.

No, it's job security. No-one will hire him past helpdesk if he can't automate mundane tasks. = my skills of actually understanding a scripting language just became slightly more valuable.

 

also it will have an error if there is a file path + name longer then 256 characters, plus there is no error handling. this would fail at university/higher education. if he is still in school then he'd get a solid C (and if i was marking, id fail him for the lack of comments).