• toot
• systemd

Create an account to the desired instance, then login to that account with toot.

~/bin/dugbot

#!/bin/sh
toot post -l fr -u "[email protected]" "$(fortune -sn500 dansunegalaxie)"

You will want to make sure the output of the command you give out to toot post isn't longer than the character limit allowed by your instance, or else it won't post.

/etc/systemd/system/dugbot.service

[Unit]
Description=Post a random DUG quote to Mastodon
 
[Service]
Type=oneshot
ExecStart=/home/juju/bin/dugbot
User=juju

/etc/systemd/system/dugbot.timer

[Unit]
Description=Run dugbot every 30 minutes
 
[Timer]
OnCalendar=*:00,30
 
[Install]
WantedBy=timers.target

Run it:

sudo systemctl enable dugbot.timer