Question

Daily Crontab Jobs

Posted on February 27, 2021
Linux Commands Ubuntu 16.04 Ubuntu 20.04
Asked by kaustubhk24

I was Looking for some daily commands to be executed on my server ubuntu 20.04. Please help me

Commands to be daily executed on night 11:25pm

sudo service apache2 restart
sudo apt update
sudo apt upgrade -y
sudo apt autoremove -y

sudo reboot

Please help me. Thanks in advance

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KFSys

Site Moderator

• February 27, 2021

Accepted Answer

Hi @kaustubhk24,

You correctly mentioned crontab. You can configure this as a script to run every day at 11:25pm.

Let’s first start with creatng the script. SSH to your droplet and start executing the following commands

touch ~/updateScript

The above will create the file for you. Now it’s time to edit it.

nano ~/updateScript

Inside of it, you can type in the following

#!/bin/bash

sudo service apache2 restart
sudo apt update
sudo apt upgrade -y
sudo apt autoremove -y
sudo reboot

Save the file and exit. Now time to make sure your script is executable

sudo chmod +x ~/updateScript

Now the last bit, add it to your crontab. To do that, type in

crontab -e

WHen the file opens at the bottom of it, add the following line

15 23 * * * bash ~/updateScript

Save the file and exit from it. To make sure you’ve added the cron, type in

crontab -l

You should see the command you added at the bottom.

Regards, KFSys

JasonLABS • February 28, 2021

A word of caution: there are times when going through the update/upgrade process requires user input beyond the -y flag. There are times an upgrade will change a config file that would wipe out any customizations you have previously set up, or change the location of a file, etc. This has the potential to make the cron script hang or fail every day until you check on it again.

My personal recommendation is to run the update/upgrade as a manual process.

For a suggestion on a script to run daily might be to have server logs emailed to you.