nano /home/user/diskmonitor.sh
#!/bin/bash used=`df -h | grep sda1 | awk {'print $5'}` used=${used/\%/} if [ $used -gt 75 ]; then echo "WARNING! Available space less than 25%. Space has been used = $used"% | mail -s "DISK ALERT" my_email@mail fi
sudo chmod +x /home/user/diskmonitor.sh
Для автоматизации можно запихнуть скрипт в крон: sudo crontab -e 00 12 * * 1-5 /home/user/diskmonitor.sh
sudo crontab -e 00 12 * * 1-5 /home/user/diskmonitor.sh
