node.js how to check a process is running by the process name?

Node.js how to check a process is running by the process name?

In Node.js, you can check if a process is running by its name using the ps-list package, which allows you to retrieve a list of currently running processes. Here's an example:

  1. Install ps-list:

    Install the ps-list package using npm:

    npm install ps-list

  2. Check if Process is Running:

    Use the following code to check if a process with a specific name is running:

    const psList = require('ps-list'); async function isProcessRunning(processName) { try { const processes = await psList(); // Check if a process with the specified name exists in the list const isRunning = processes.some((process) => process.name.toLowerCase() === processName.toLowerCase()); return isRunning; } catch (error) { console.error('Error checking process:', error); return false; } } // Example usage: const processNameToCheck = 'node'; // Replace with the process name you want to check isProcessRunning(processNameToCheck) .then((result) => { if (result) { console.log(`Process ${processNameToCheck} is running.`); } else { console.log(`Process ${processNameToCheck} is not running.`); } }) .catch((error) => { console.error('Error:', error); });

    This code defines an asynchronous function isProcessRunning that uses ps-list to retrieve a list of running processes. It then checks if a process with the specified name exists in the list.

    Replace 'node' with the process name you want to check.

Keep in mind that this approach relies on retrieving a list of running processes, and it may not work on all platforms or in certain restricted environments. Additionally, the process name comparison is case-insensitive. Adjust it as needed based on your requirements.

Examples

  1. "Node.js check if process is running by name"

    • Code:
      const processName = 'your-process-name'; const isRunning = require('is-running')(processName); console.log(`Is ${processName} running? ${isRunning}`);
    • Description: Uses the is-running npm package to check if a process with a specific name is running.

  2. "Node.js child process spawn check if running"

    • Code:
      const { execSync } = require('child_process'); const processName = 'your-process-name'; try { execSync(`pgrep -f ${processName}`); console.log(`${processName} is running`); } catch (error) { console.log(`${processName} is not running`); }
    • Description: Uses pgrep command through child_process to check if a process with a specific name is running.

  3. "Node.js ps-list check if process is running"

    • Code:
      const psList = require('ps-list'); const processName = 'your-process-name'; psList().then((processes) => { const isRunning = processes.some((process) => process.name === processName); console.log(`Is ${processName} running? ${isRunning}`); });
    • Description: Utilizes the ps-list npm package to list processes and check if a process with a specific name is running.

  4. "Node.js cross-platform check if process is running"

    • Code:
      const findProcess = require('find-process'); const processName = 'your-process-name'; findProcess('name', processName) .then((list) => { const isRunning = list.length > 0; console.log(`Is ${processName} running? ${isRunning}`); });
    • Description: Uses the find-process npm package to check if a process with a specific name is running across different platforms.

  5. "Node.js ps-node check if process is running"

    • Code:
      const ps = require('ps-node'); const processName = 'your-process-name'; ps.lookup({ command: processName }, (err, resultList) => { const isRunning = resultList.length > 0; console.log(`Is ${processName} running? ${isRunning}`); });
    • Description: Uses the ps-node npm package to check if a process with a specific name is running.

  6. "Node.js execa check if process is running"

    • Code:
      const execa = require('execa'); const processName = 'your-process-name'; execa.command(`pgrep -x ${processName}`) .then(() => console.log(`${processName} is running`)) .catch(() => console.log(`${processName} is not running`));
    • Description: Utilizes the execa npm package to run a command and check if a process with a specific name is running.

  7. "Node.js pidusage check if process is running"

    • Code:
      const pidusage = require('pidusage'); const processName = 'your-process-name'; pidusage(processName, (err, stats) => { const isRunning = !err && stats; console.log(`Is ${processName} running? ${isRunning}`); });
    • Description: Uses the pidusage npm package to check if a process with a specific name is running and retrieves its usage statistics.

  8. "Node.js ps-check check if process is running"

    • Code:
      const psCheck = require('ps-check'); const processName = 'your-process-name'; psCheck({ processName }) .then((status) => console.log(`Is ${processName} running? ${status}`));
    • Description: Uses the ps-check npm package to check if a process with a specific name is running.

  9. "Node.js process-exists check if process is running"

    • Code:
      const processExists = require('process-exists'); const processName = 'your-process-name'; processExists(processName) .then((exists) => console.log(`Is ${processName} running? ${exists}`));
    • Description: Uses the process-exists npm package to check if a process with a specific name is running.

  10. "Node.js ps-lookup check if process is running"

    • Code:
      const psLookup = require('ps-lookup'); const processName = 'your-process-name'; psLookup({ command: processName }) .then((result) => console.log(`Is ${processName} running? ${result.length > 0}`));
    • Description: Uses the ps-lookup npm package to check if a process with a specific name is running.

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