69 lines
1.4 KiB
Markdown
69 lines
1.4 KiB
Markdown
---
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title: How to use cronjobs
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description: Examples on how to use cronjob to automate tasks
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published: true
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date: 2023-06-27T08:28:13.676Z
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tags:
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editor: markdown
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dateCreated: 2023-06-27T08:28:13.676Z
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---
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# How to use cronjobs
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This guide provides examples on how to use cronjob to automate tasks. _This was tested on Ubuntu 22.04._
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## Get Started
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- Begin by opening a terminal and running the following command:
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```bash
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crontab -e
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```
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If it's the first time you're using cronjob, you will be asked to select an editor. You can choose `nano` or `vim`. If you're not familiar with either, choose `nano` as the guide is based on this and it's the easiest. This command will open the crontab file in the nano text editor.
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- Next, you need to define the cronjob. Add the following lines to the file:
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```bash
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* * * * * <command>
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```
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- Finally, you can save the file by pressing `Ctrl + X` and then `Y`.
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## Syntax
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```bash
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* <- minute (0-59)
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* <- hour (0-23)
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* <- day of month (1-31)
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* <- month (1-12)
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* <- day of week (0-6) (Sunday=0)
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<command> <- the command to execute
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```
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## Examples
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### Run a command every minute
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```bash
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* * * * * <command>
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```
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### Run a command every 5 minutes
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```bash
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*/5 * * * * <command>
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```
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### Run a command every hour
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```bash
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0 * * * * <command>
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```
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### Run a command every day at midnight
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```bash
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0 0 * * * <command>
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```
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