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NodeJS: How to run a process (also a shell script etc) on background separated with the parent node process.
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| const spawn = require('child_process').spawn; | |
| // a command you want to execute. | |
| const command = "node cli/hoge.js --aaa --bbb=123"; | |
| const parts = command.split(" "); | |
| const cmd = parts[0]; | |
| const args = parts.splice(1); | |
| // detached: true: This option makes the child process a leader of a new process group, allowing it to continue running after the parent process exits. | |
| // stdio: 'ignore': This detaches the child process's input/output streams from the parent, preventing it from being affected by the parent's termination. | |
| // child.unref(): This removes the parent's event loop reference to the child process, ensuring that the parent can exit independently. | |
| spawn(cmd, args, { | |
| stdio: 'ignore', // piping all stdio to /dev/null | |
| detached: true, | |
| env: process.env, | |
| }).unref(); | |
| const { spawn } = require('child_process'); | |
| const child = spawn('node', ['background_script.js'], { | |
| detached: true, | |
| stdio: 'ignore', | |
| }); | |
| child.unref(); |
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