Method Error

script.go:397–404

Error returns any error present on the pipe, or nil otherwise. Error is not a sink and does not wait until the pipe reaches completion. To wait for completion before returning the error, see [Pipe.Wait].

()

// completion. To wait for completion before returning the error,
// see [Pipe.Wait].
func (p *Pipe) Error() error {
	if p.mu == nil { // uninitialised pipe
		return nil
	}
	p.mu.Lock()
	defer p.mu.Unlock()
	return p.err
}

// Exec runs cmdLine as an external command, sending it the contents of the
// pipe as input, and produces the command's standard output (see below for