Create a shell script in a file, for example called run.sh

#!/bin/sh
node app.js

Give it execution rights

chmod +x run.sh

Then

crontab -e

By default this opens with the default editor, which is usually vim.

| Tip if you’re new to vim: use i to enter insertion mode, so you can type/paste, then esc and wq to save and quit.

Now you can add one line for each cron job.

The syntax to define cron jobs is kind of scary. This is why I usually use a website to help me generate it without errors: https://crontab-generator.org/

You pick a time interval for the cron job, and you type the command to execute.

I chose to run this every every day at 10AM.

This is the crontab line I need to run:

0 10 * * * /Users/flaviocopes/dev/run.sh >/dev/null 2>&1

If all goes well, the cron job is set up.

Once this is done, you can see the list of active cron jobs by running:

crontab -l

You can remove a cron job running crontab -e again, removing the line and exiting the editor.

Lessons in this unit:

0:	Introduction
1:	Axios crashes the Node.js process when the request fails
2:	▶︎ How to set up a cron job that runs a Node.js app
3:	How to get both parsed body and raw body in Express
4:	Interact with the Google Analytics API using Node.js
5:	How to bulk convert file names using Node.js
6:	How to deep copy JavaScript objects using structuredClone
7:	How to handle file uploads in Node.js
8:	How to send an email using nodemailer
9:	Logging all the requests coming through an Express app
10:	How to upload an image to S3 using Node.js
11:	How to read a CSV file with Node.js
12:	How to set the current working directory of a Node.js program
13:	How to upload files to S3 from Node.js
14:	How to write a CSV file with Node.js
15:	Where to host a Node.js app
16:	Parsing JSON with Node.js
17:	nodemailer, how to embed an image into an email
18:	The Pug Guide
19:	Restarting a Node process without file changes
20:	How to use Sequelize to interact with PostgreSQL