Sending Output of Script By mail

Question

I have a script to Monitor servers in Production , and I want to receive the result of this script execution every 2 hours by mail , how can I do this ? someone has an example ? this is my Script:

    #!/bin/sh
CheckPorts=`cd /DATA/scripts && sh checkPorts.sh`

CPU=`iostat -ch`

FreeMemory=`free -mh`

DISK_Space_DATA=`df -h /DATA`

DISK_Space_ROOT=`df -h /root`

Kafka=`ps -aux | grep kafka`

Spark=`ps -aux | grep spark`
# -CheckPorts:
echo -e "\e[31;43m***** Firewall Authorization *****\e[0m"

echo "${CheckPorts}"

echo ""
# -CPU:
echo -e "\e[31;43m***** CPU INFORMATION *****\e[0m"

echo "${CPU}"

echo ""
# -Free and used memory in the system:
echo -e "\e[31;43m ***** FREE AND USED MEMORY *****\e[0m"

echo "${FreeMemory}"

echo ""
# -File system disk space usage:
echo -e "\e[31;43m***** FILE SYSTEM /DATA DISK SPACE USAGE *****\e[0m"

echo "${DISK_Space_DATA}"

echo ""
# -File system disk space usage:
echo -e "\e[31;43m***** FILE SYSTEM /root DISK SPACE USAGE *****\e[0m"

echo "${DISK_Space_ROOT}"

echo ""
# -Spark Process Status:
echo -e "\e[31;43m***** Spark Process Status *****\e[0m"

echo "${Spark}"

echo ""
# -Kafka PROCESSES Status:
echo -e "\e[31;43m***** Kafka Processes Status *****\e[0m"

echo "${Kafka}"

echo ""

echo "Done" 

Answer 1

Suppose your script is called monitor.sh. There are many commands you can use on linux to send the email.

For example with mail command:

mail -s "Monitor Report" admin@example.com < <( bash monitor.sh )

With sendmail:

echo "Subject: Monitor Report" | sendmail -v admin@example.com < <( bash monitor.sh )

With ssmtp:

ssmtp admin@example.com < <( echo "Subject: Monitor" ; bash monitor.sh )

With curl and gmail:

bash monitor.sh > report.txt
curl --url 'smtps://smtp.gmail.com:465' --ssl-reqd \
  --mail-from 'developer@gmail.com' --mail-rcpt 'admin@example.com' \
  --upload-file report.txt --user 'developer@gmail.com:your-accout-password'

If you want this automatically every 2 hours, put the command on cron (see man crontab).

Chances are, your server already has one of the commands above properly configured to send email (sendmail, mail, ssmtp), if not, take a look how to install and configure those.

---

References:

https://blog.edmdesigner.com/send-email-from-linux-command-line/

https://tecadmin.net/ways-to-send-email-from-linux-command-line/

Answer 2

May be this will help you to get the expected result

echo "Hourly report : \n $(cat \$file.log)" | mailx -s "Subject : add_your_subject" example@gmail.com

You can even add -a to above mailx command to attach the log generated as an attachment

make sure if you want to add attachment .. generate the log with date+time like below

ABC_12_09_2020_1_56_34.log  

you can write some script that will pick latest file as an when the new log is generated and your mailx command while running should pick the latest log as an attachment