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Full Discussion: How to check parameter variable?
Top Forums Shell Programming and Scripting How to check parameter variable? Post 74619 by Just Ice on Friday 10th of June 2005 05:37:24 PM
Old 06-10-2005
in ksh ... this is the other form of the one i wrote earlier ...
Code:
if [ $myvar ]    ### this part here tests if the variable is set
then
   do_something
fi

... there are other ways variables are tested and set --- see man ksh --- but i don't think they are what you need based on my interpretation of your question

... also, make sure your $1 is not reset by succeeding lines in your script prior to it being used by the mail code ....
 

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LEARN ABOUT SUSE

ocf_heartbeat_mailto

OCF_HEARTBEAT_MAILTO(7) 					OCF resource agents					   OCF_HEARTBEAT_MAILTO(7)

NAME

       ocf_heartbeat_MailTo - Notifies recipients by email in the event of resource takeover

SYNOPSIS

       MailTo [start | stop | status | monitor | meta-data | validate-all]

DESCRIPTION

       This is a resource agent for MailTo. It sends email to a sysadmin whenever a takeover occurs.

SUPPORTED PARAMETERS

       email
	   The email address of sysadmin. (required, string, no default)

       subject
	   The subject of the email. (optional, string, no default)

SUPPORTED ACTIONS

       This resource agent supports the following actions (operations):

       start
	   Starts the resource. Suggested minimum timeout: 10.

       stop
	   Stops the resource. Suggested minimum timeout: 10.

       status
	   Performs a status check. Suggested minimum timeout: 10. Suggested interval: 10.

       monitor
	   Performs a detailed status check. Suggested minimum timeout: 10. Suggested interval: 10.

       meta-data
	   Retrieves resource agent metadata (internal use only). Suggested minimum timeout: 5.

       validate-all
	   Performs a validation of the resource configuration. Suggested minimum timeout: 5.

EXAMPLE

       The following is an example configuration for a MailTo resource using the crm(8) shell:

	   primitive example_MailTo ocf:heartbeat:MailTo 
	     params 
	       email=string 
	     op monitor depth="0" timeout="10" interval="10"

SEE ALSO

       http://www.linux-ha.org/wiki/MailTo_(resource_agent)

AUTHOR

       Linux-HA contributors (see the resource agent source for information about individual authors)

resource-agents 1.0.3						    07/05/2010						   OCF_HEARTBEAT_MAILTO(7)
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