System

Implementation status: ProcessInfo cpu/mem/user/hostname/uptime/disk/load/primaryIpv4 Implemented (failures throw SystemError); this is not a full sysinfo replacement. File I/O and path helpers ship under the same import System aggregate (File, FilePath, Env, process helpers). R-47: Env is a caseless enum namespace; FilePath is a value struct (rawValue) with instance methods plus String static bridges.

swift

import System

func main() {
    print(ProcessInfo.processorCount)
    do {
        print(ProcessInfo.hostname())
    } catch (e) {
        print("hostname-unavailable")
    }
    let p = FilePath(rawValue: "/tmp").joining(other: "demo.txt")
    print(p.rawValue)
    print(FilePath.join(a: "/tmp", b: "demo.txt"))
}

Example: examples/os_info/main.sy

Type	Role
`ProcessInfo`	Machine / user queries (`processorCount`, `hostname()`, …)
`Env`	Process environment (`get` / `set`) — caseless enum
`FilePath`	Path value type (`rawValue`) + join/normalize/exists/extension
`File` / `Directory` / `Stdin`	Filesystem and stdin (see System I/O and Networking)
`SystemError`	Thrown when a query or I/O path fails

ProcessInfo is separate from process spawn/exec helpers: the former queries machines/users; the latter handles args/env/exec. Several queries throw when a failure-inducing environment variable is injected (see comments in packages/os/mod.sy), so user code should use try/catch rather than relying on -1 or empty-string sentinels.

System ​

System