Scheme 48 Manual | Contents | In Chapter: Access to POSIX
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Process environment
These are in structures posix-process-data and posix.
(get-process-id) -> process-id
(get-parent-process-id) -> process-id
These return the process ids of the current process and its parent.
See section * for operations on process ids.
(get-user-id) -> user-id
(get-effective-user-id) -> user-id
(set-user-id! user-id)
(get-group-id) -> group-id
(get-effective-group-id) -> group-id
(set-group-id! group-id)
Every process has both the original and effective user id and group id.
The effective values may be set, but not the original ones.
(get-groups) -> group-ids
(get-login-name) -> string
Get-groups returns a list of the supplementary groups of the
current process.
Get-login-name returns a user name for the current process.
(lookup-environment-variable string) -> string or #f
(environment-alist) -> alist
Lookup-environment-variable looks up its argument in the
environment list and returns the corresponding value or #f
if there is none.
Environment-alist returns the entire environment as a list of
(name-string . value-string) pairs.
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