int wait(callable $callback = null) Waits for the process to terminate. The callback receives

Process setOptions(array $options)

string getIncrementalOutput() Returns the output incrementally. In comparison with the

Process setCommandLine(string $commandline)

Process setEnv(array $env)

string getCommandLine() Gets the command line to be executed.

static ProcessBuilder create(array

ProcessBuilder setArguments(array $arguments)

ProcessBuilder inheritEnvironmentVariables(bool

bool haveReadSupport() Returns if pipes are able to read output.