at command in ruby script

Question

I am having simple ruby script which will send mail after certain time, this is my code :

#!/usr/bin/env ruby
system("at now + 1 day <<END
echo 'This is test message from xyz' | mail -s 'Test message' [email protected]
END")

whenever I run this script, I get

sh: END: not found

Edit 1

If I use on single line like

system("at now + 1 min echo 'This is test message from xyz' | mail -s 'Test message' [email protected]")

it gives error :

syntax error. Last token seen: e

Garbled time

what am doing wrong in this ?

@emaillenin I have used it for multiline command for system, If I am doing wrong than what would be the correct syntax for sending mail. ? — Rahul
– Rahul, Commented May 31, 2016 at 11:32
syntax error. Last token seen: e This command does not work when run from the terminal. You get the same error. — Tom Lord
– Tom Lord, Commented May 31, 2016 at 11:46

delta · Accepted Answer · 2016-05-31 11:58:34Z

4

The at one-liner form can be like echo 'COMMAND' | at WHEN.

You can try this:

system("echo \"echo 'This is test message from xyz' | mail -s 'Test message' [email protected]\" | at now + 1 day")

answered May 31, 2016 at 11:45

delta

3,81819 silver badges25 bronze badges

Sign up to request clarification or add additional context in comments.

3 Comments

your suggestion will take me to at> command line which I don't want. I want this script should send the mail

thanks, that's what I wanted. but could you please explain me bit. why have you used double echo ?

@arzyfex only the first echo matters, the second echo is just part of COMMAND.