Processes

The stdlib provides three process-related types:

• Process
• ExecOptions
• ProcessResult

Process is the main entry point for running commands.

let result := try Process.run("echo", ["hello"]) : e => {
  panic(e);
};

print(result.stdout);

ExecOptions describes how a command should be executed.

let opts := Process.options("ls");
print(opts.command);

Its fields include:

• command
• args
• cwd
• shell
• stdin
• check

ProcessResult describes what happened after execution.

Its fields include:

• command
• status
• success
• stdout
• stderr

Important Process functions include:

• Process.options(...)
• Process.raw(...)
• Process.run(...)
• Process.run_in(...)
• Process.shell(...)
• Process.which(...)

For example:

let which_git := Process.which("git");
print(which_git);

Use these types when your program needs to run shell commands or other external programs and inspect their output.