Shell Programming and Scripting

Hi Guys,

i'm new to scripting, please help me to write the script.

Purpose: To write a simple addition program and to mail the output result.

Script:

Code:

#!/bin/bash
echo "entr numbers";
read n1;
read n2;
answer=$(($n1+$n2));
echo $answer > mail -s "output"  karthic324n@gmail.com;

i'm not getting the result mail. Any idea to solve the problem??

Pls use code tags as required by forum rules!

Try to pipe echo's output to mail instead of (faultily!) redirecting it!

Hi rudic, thank you very much for your reply. I even tired to pipe the output. But of no use. I use ubuntu, should i do any network changes? to get the output mail?

Hi Karthick.

Just as a check to see if your mail command is working correctly, you could view the mail log.

For me it is in /var/log and called 'mail' although yours may be different (maybe maillog)

You should be able to see in there whether the mail is even being queued.

There should also be an error log for mail (ours is called mail.warn and there's a mail.error too) which may give you some pointers as to why the mail is not being sent.

If you cannot find your mail logs but are on your workplace network, you could also try sending a mail to your internal email address first and see if that arrives successfully, if so then this would indicate some changes are needed to mail externally.

Hi Jpt,


Thank you, Very much for your reply. It got solved. i checked in the mail log and found out the problem.

Thanks again