Write unix script to send email automatically, passing arguments

Question

I have written the below script to automate email notification.

#!/bin/bash

TO_ADDRESS="[email protected]"
FROM_ADDRESS="[email protected]"
SUBJECT="November 2016 Step"
BODY="Hi All,\n\n Product Mapping Check is done.\n\n Regards, \n\n Pratik"
echo ${BODY}| mail -s ${SUBJECT} ${TO_ADDRESS} -- -r ${FROM_ADDRESS}

Requirement : A unix script when executed should send an email from [email protected] to [email protected] with above subject and body. When the script is run it should ask for month year parameter. For example register.sh is the script name. the run command should look like

> register.sh November 2016

When the above script is executed, it should take the month and year input and copy it to the subject line . Then send out the email.

Let me know if i need to config anything or call any server details in the script.

[How do I parse command line arguments in Bash?](https://stackoverflow.com/q/192249/608639), [Accessing bash command line args $@ vs $*](https://stackoverflow.com/q/12314451/608639), [Best way to parse command line args in Bash?](https://stackoverflow.com/q/14786984/608639), [Pass command line arguments to bash script](https://unix.stackexchange.com/q/32290/56041), [Passing command line arguments through Bash](https://stackoverflow.com/q/25467253/608639), etc. — jww, Apr 19 '18 at 08:49
Possible duplicate of [In Bash, how do you access command line arguments inside a function?](https://stackoverflow.com/questions/2740906/in-bash-how-do-you-access-command-line-arguments-inside-a-function) — jww, Apr 19 '18 at 08:50

score 0 · Answer 1 · answered Apr 19 '18 at 08:14

0

You can use the shell's positional parameters, $1, $2, ... to refer to arguments of your script:

SUBJECT="$1 $2 Step"

With register.sh November 2016 this makes $1 contain November and $2 contain 2016.

answered Apr 19 '18 at 08:14

Jens

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Do I need to declare $1 and $2 anywhere....or simply putting SUBJECT="$1 $2 Step" will work? – Pratik Fouzdar Apr 19 '18 at 09:47
@PratikFouzdar No declaration necessary. As for your error, I have no idea because you don't provide any context. – Jens Apr 19 '18 at 14:27

score 0 · Answer 2 · answered Aug 06 '20 at 07:26

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The shell script is having a concept of runtime arguments which can be added by the below command

$1, $2 etc

$1 is the first argument $2 is the second argument from runtime

answered Aug 06 '20 at 07:26

Nandhakumar Appar

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Write unix script to send email automatically, passing arguments

2 Answers2