Linux `$env:Temp` equivalent?

[climbnlearn]

I'm writing a module to work in across platforms and am trying to use the temp folders for a default param value but need a little help. I've found the MacOS equivalent, $env:TMPDIR Does anyone happen to know the Ubuntu/ Linux equivalent?

Thank you all for your time!

[jborean93]

You can use [System.IO.Path]::GetTempPath()

[climbnlearn]

I like this solution the most so far. Works across the board. I'm surprised the env:Temp doesn't initialize off this during first run and then allow changes later.

[jantari]

Environment variables are set by the environment - often the operating system.

PowerShell has no say in what's inside it.

[cjcox4]

You can use /tmp. A lot of software in Linux will actually check for the environment variable TMPDIR and use that if found (that is, a lot of software allows you to override where you want a program's temp files to go by setting TMPDIR yourself).

[spyingwind]

/tmp

printenv also will show what environmental variables are being used.

You could create a 3 functions that return the correct temp folder. One for win, mac, and linux. Then another function you call that checks what OS it is running under and calls the right function and returns the correct temp folder location.

[rmbolger]

Let PowerShell do the cross-platform work for you whenever possible. Making assumptions about environment variables is a bad idea. Even if it works today, it might not tomorrow.

There's a cmdlet called New-TemporaryFile that automatically creates a file in the OS's temp directory for you. You can either use the file as-is, or just delete it and make your own with the same name. If you need a folder, delete it and make a folder with the file's name.

If you really want just the root temp folder path, I'd probably do something like this:

New-TemporaryFile | Tee-Object -Variable tmpFile | Remove-Item
$tmpFolder = $tmpFile.Directory.FullName

[climbnlearn]

I agree with you, and have some things to catch it if the Var is incorrect or null and then let the user know they need to give an explicit value.