To get an alert when a disk is full on a UNIX system, you can set up a disk space monitoring script that periodically checks the disk usage and sends an email alert when the disk usage exceeds a certain threshold. Here’s an example script that you can modify to suit your needs:<\/p>\n
#!\/bin\/bash<\/span><\/p>\n# Set the email address to receive the alert<\/span>
\nEMAIL=\"your.email@example.com\"<\/span><\/p>\n# Set the threshold for the disk usage in percent<\/span>
\nTHRESHOLD=90<\/p>\n# Get the disk usage for the root file system in percent<\/span>
\nDISK_USAGE=$(df<\/span> \/ | awk '{print $5}'<\/span> | tail<\/span> -n 1 | cut<\/span> -d'%'<\/span> -f1)<\/p>\n# Check if the disk usage is greater than or equal to the threshold<\/span>
\nif<\/span> [ $DISK_USAGE<\/span> -ge $THRESHOLD<\/span> ]; then<\/span>
\n # Send an email alert<\/span>
\n echo<\/span> \"Disk usage is at $DISK_USAGE<\/span>%.\"<\/span> | mail -s \"Disk full alert\"<\/span> $EMAIL<\/span>
\nfi<\/span>
\n<\/code><\/div>\n<\/div>\nHere’s how the script works:<\/p>\n
\n- The script sets the email address to receive the alert and the threshold for the disk usage in percent.<\/li>\n
- The script uses the
df<\/code> command to get the disk usage for the root file system (\/<\/code>) in percent. The output is piped to awk<\/code> to extract the percentage value, then piped to tail<\/code> to get the last line (which corresponds to the root file system), and finally piped to cut<\/code> to extract the percentage value only.<\/li>\n- The script checks if the disk usage is greater than or equal to the threshold.<\/li>\n
- If the disk usage is greater than or equal to the threshold, the script sends an email alert using the
mail<\/code> command.<\/li>\n- You can set up a cron job to run the script periodically (e.g. every hour or every day) to monitor the disk usage and send alerts as needed.<\/li>\n<\/ol>\n
Note that this is just a simple example script, and you may want to modify it to suit your specific requirements, such as monitoring multiple disks, using a different threshold, or sending alerts using a different method (e.g. a Slack notification or a text message).<\/p>\n","protected":false},"excerpt":{"rendered":"