Look at the code of other 3rd-party scripts such as MerlinAU or BACKUPMON that have incorporated this functionality.
Like to see a clear answer on this myself. In the meantime here is a snippet of what I came up with that works.
[email protected]
NEW_ADDR=`cat /opt/ipchange/last_ip`
{
echo From: rt-be88u.dbonenet.com
echo To: [email protected]
echo Subject: External IP Address Change
echo
echo -n New IP ADDRESS:
echo ' [ '$NEW_ADDR' ] '
} | /usr/sbin/sendmail -H 'exec openssl s_client -quiet -verify_quiet -tls1_3 -CAfile /opt/etc/ssl/cert.pem -connect mail.dbonenet.com:465' $M_ADDR 2>/dev/null
github.com
OR
Never too late! Lol!Sorted. I ended up with a "hack" of the curl method from wicens. So simple really.
My first asuswrt script, at my age
#!/bin/sh
# Load amtm email configuration
. /jffs/addons/amtm/mail/email.conf
# Define variables for your message
SUBJECT="Router Alert: $(nvram get computer_name)"
BODY="Your home router (RT-BE88U) has detected an event at $(date). Your watched file has changed."
TEMP_MAIL="/tmp/mail_body.txt"
# Path to the file you want to monitor
FILE_TO_WATCH="<INSERT THE NAME OF YOUR FILE HERE>"
# Store the last known MD5 checksum
LAST_SUM=$(cat /tmp/file_checksum.txt 2>/dev/null)
CURRENT_SUM=$(md5sum "$FILE_TO_WATCH" | awk '{print $1}')
# Compare the file MD5s
if [ "$LAST_SUM" != "$CURRENT_SUM" ]; then
# Construct the email
echo "Subject: $SUBJECT" > "$TEMP_MAIL"
echo "From: $FROM_NAME <$FROM_ADDRESS>" >> "$TEMP_MAIL"
echo "To: $TO_ADDRESS" >> "$TEMP_MAIL"
echo "" >> "$TEMP_MAIL"
echo "$BODY" >> "$TEMP_MAIL"
# Send via curl using amtm's stored encrypted credentials
/usr/sbin/curl --url "$PROTOCOL://$SMTP:$PORT" \
--mail-from "$FROM_ADDRESS" \
--mail-rcpt "$TO_ADDRESS" \
--upload-file "$TEMP_MAIL" \
--ssl-reqd \
--user "$USERNAME:$(/usr/sbin/openssl aes-256-cbc $emailPwEnc -d -in /jffs/addons/amtm/mail/emailpw.enc -pass pass:ditbabot,isoi)" \
$SSL_FLAG
# Cleanup
rm "$TEMP_MAIL"
~ Close the loop
ficru a check_file_change "*/5 * * * * /jffs/scripts/check_file_change.sh"Thanks @Ripshod! FILEMON sounds like the way to go! LOL.Dare I call it FileMON?
A little tidy up and some obfuscation and here it is - I'll stick with what it's called now. It's ready to go, as long as your email settings are done in amtm (em).Just set the file you want to watch where the script says <INSERT THE NAME OF YOUR FILE HERE>
/jffs/scripts/check_file_change.sh
I set this to run every 5 minutes usingBash:#!/bin/sh # Load amtm email configuration . /jffs/addons/amtm/mail/email.conf # Define variables for your message SUBJECT="Router Alert: $(nvram get computer_name)" BODY="Your home router has detected an event at $(date). A file has changed." TEMP_MAIL="/tmp/mail_body.txt" # Path to the file you want to monitor FILE_TO_WATCH="<INSERT THE NAME OF YOUR FILE HERE>" # Store the last known MD5 checksum LAST_SUM=$(cat /tmp/file_checksum.txt 2>/dev/null) CURRENT_SUM=$(md5sum "$FILE_TO_WATCH" | awk '{print $1}') # Compare the file MD5s if [ "$LAST_SUM" != "$CURRENT_SUM" ]; then # Construct the email echo "Subject: $SUBJECT" > "$TEMP_MAIL" echo "From: $FROM_NAME <$FROM_ADDRESS>" >> "$TEMP_MAIL" echo "To: $TO_ADDRESS" >> "$TEMP_MAIL" echo "" >> "$TEMP_MAIL" echo "$BODY" >> "$TEMP_MAIL" # Send via curl using amtm's stored encrypted credentials /usr/sbin/curl --url "$PROTOCOL://$SMTP:$PORT" \ --mail-from "$FROM_ADDRESS" \ --mail-rcpt "$TO_ADDRESS" \ --upload-file "$TEMP_MAIL" \ --ssl-reqd \ --user "$USERNAME:$(/usr/sbin/openssl aes-256-cbc $emailPwEnc -d -in /jffs/addons/amtm/mail/emailpw.enc -pass pass:ditbabot,isoi)" \ $SSL_FLAG # Cleanup rm "$TEMP_MAIL" # Close the loop fi
so it checks the file every 5 minutes. I also added the cru to services-start so it runs from boot.Code:cru a check_file_change "*/5 * * * * /jffs/scripts/check_file_change.sh"
Could you please explain the use case? Why are you watching for a file change? Does this have something to do with the situation you were dealing with as of late?
You clearly remember.
# log all httpd logs to httpd.log
destination d_httpd {
file("/opt/var/log/httpd.log");
};
filter f_httpd {
program("HTTPD") or
program("httpd") or
program("httpds");
};
log {
source(src);
filter(f_httpd);
destination(d_httpd);
destination(log_server);
flags(final);
};
#eof
