exec()

exec()

function exec(string $command): string

Executes an external program and returns the last line of output.

Parameters:

• $command (string)

Returns: string

Availability

• Compiled (AOT): supported on the three executable/release hosts (macOS ARM64, Linux ARM64, and Linux x86_64); calls are refused at compile time for iOS library targets.
• eval() (magician interpreter): supported — declarative interpreter builtin (crates/elephc-magician/src/interpreter/builtins/network_env/exec.rs).

No examples yet — check examples/ and showcases/ for usage patterns.

Internals

For how exec is implemented in the compiler, see the internals page.