Enviromnent variables

[alexeyv]

How can one read system environment variable in a portable way?
For example in Python I can write

Code: Select all

import os
os.getenv('HOME')


in Common Lisp (at least in CCL or LW) I can call

Code: Select all

(getenv 'HOME')


In Dyalog I was not able to find anything in documentation. I currently used

Code: Select all

⎕SH 'echo $HOME'


but it doesn't look portable :\

[Morten|Dyalog]

Try this:

Code: Select all

⎕←2 ⎕NQ '.' 'GetEnvironment' 'HOME'

It isn't EXACTLY the same, in that - under Windows - it will also look on the command line for a switch called HOME, then in the environment, and finally in the Windows Registry, but for writing portable applications it tends to be what you want.

[alexeyv]

Thanks! This works (I'm trying on OSX).

I think something like ⎕ENV could be more intuitive though.