os-env ( key -- value )
Environment variables

Next:

os-envs ( -- assoc )

Vocabulary
environment

Inputs

key

a string

Outputs

value

a string

Word description
Looks up the value of a shell environment variable.

Examples
This is an operating system-specific feature. On Unix, you can do:

USING: environment io ; "USER" os-env print
jane

See also
os-envs, set-os-env, unset-os-env, set-os-envs, set-os-envs-pointer, change-os-env, with-os-env

Definition

USING: system ;

IN: environment

HOOK: os-env os ( key -- value )

Methods

USING: environment system unix.ffi ;

M: unix os-env getenv ;