process

The process namespace provides access to current OS process parameters and control.

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Quick Reference

Function	Signature	Return Type	Description
process.args	process.args()	array	Returns command-line arguments passed to the script.
process.exit	process.exit(code)	never	Terminates the current process immediately with an exit code.
process.cwd	process.cwd()	string	Returns the current working directory path.
process.pid	process.pid()	number	Returns the unique process ID.
process.chdir	process.chdir(dir)	bool	Changes the current working directory.

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Detailed Methods

process.args()

Returns an array of strings containing arguments passed after the script filename.

rqio run cli_tool.rq --input data.txt --verbose

var args = process.args();
print("Total arguments: " + str(len(args)));

var i = 0;
while (i < len(args)) {
    print("Arg " + str(i) + ": " + args[i]);
    i = i + 1;
}

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process.exit(code = 0)

Immediately halts execution of the script or compiled binary and returns the specified integer status code to the operating system.

• 0: Success / normal exit.
• 1 or greater: Error / abnormal exit.

var input_file = "data.csv";
if (!fs.exists(input_file)) {
    print("Error: Missing input file " + input_file);
    process.exit(1);
}

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process.cwd()

Returns an absolute path representing the process’s current working directory.

var current_dir = process.cwd();
print("Working in: " + current_dir);

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process.pid()

Returns the operating system Process ID (PID), useful for logging, creating lockfiles, or process supervision.

var pid = process.pid();
print("Process ID: " + str(pid));
fs.write("server.pid", str(pid));