Save md5 hash to file using powershell

Question

When I use:

Get-FileHash file.ext -Algorithm MD5 |select Hash

the output is

Hash                                               
----
1231234567890ABCDEF4567890ABCDEF

When I use:

Get-FileHash file.ext -Algorithm MD5 |select Hash >file.md5

File content is:

Hash                                               
----
1231234567890ABCDEF4567890ABCDEF

I want in content only MD5 sum. How to implement that?

notjustme · Accepted Answer · 2015-02-19 09:16:04Z

5

Use -ExpandProperty in your select.

Get-FileHash file.ext -Algorithm MD5 | select -ExpandProperty Hash >file.md5

Or like this

(Get-FileHash file.ext -Algorithm MD5).Hash > file.md5

In a loop it could look something like this (hash for "file.ext" would end up in a file called "file.ext.md5".

Get-ChildItem * -Include '*.ext' | foreach { (Get-FileHash $_ -Algorithm MD5).Hash > "$($_.Name).md5" }

edited Feb 19, 2015 at 9:16

answered Feb 19, 2015 at 8:33

notjustme

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3 Comments

Ryan Bemrose Over a year ago

Your Select-Object solution is better, but I wanted to mention you can also do this with Foreach-Object. Get-FileHash file.ext -Algorithm MD5 | % Hash > file.md5

R. Nec Over a year ago

When I use it in foreach loop that goes throuth list of files basenames [Get-ChildItem . -Include '.ext' |select BaseName] (Get-FileHash ($list_name + '.ext') -Algorithm MD5).Hash > ($list_name + '.ext.md5') it doesn't work.

Ryan Bemrose Over a year ago

When you've got a list of filenames, use the select version, or the % Hash line I put above.

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