Execute a Command Line Binary with node.js
You can execute a command line binary in Node.js using the child_process
module. Here's a simple example:
const { exec } = require('child_process');
const binaryPath = '/path/to/your/binary'; // Replace with the actual path to your binary
exec(binaryPath, (error, stdout, stderr) => {
if (error) {
console.error(`Error: ${error.message}`);
return;
}
if (stderr) {
console.error(`stderr: ${stderr}`);
return;
}
console.log(`stdout: ${stdout}`);
});
In this example:
- Replace
/path/to/your/binary
with the actual path to your binary executable. - The
exec
function is used to execute the binary. It takes a command string as its first argument and a callback function as its second argument. - The callback function is called when the process is complete. It receives three parameters:
error
,stdout
, andstderr
.error
: An object with details about the error if the command failed.stdout
: The standard output of the command.stderr
: The standard error of the command.
- Check for errors and handle the output accordingly.
Note: If you need to provide arguments to your binary, you can include them in the command string. For example:
const binaryPath = '/path/to/your/binary';
const argument1 = 'arg1';
const argument2 = 'arg2';
exec(`${binaryPath} ${argument1} ${argument2}`, (error, stdout, stderr) => {
// ...
});
Keep in mind that using exec
has some security implications, especially if you're constructing the command string with user input. In such cases, consider using spawn
or execFile
with an array of arguments to avoid command injection vulnerabilities.
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