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Top Forums Shell Programming and Scripting Ping Host Until it is up and email Post 302702703 by Corona688 on Tuesday 18th of September 2012 05:22:17 PM
Old 09-18-2012
I think you have the loop in the wrong place. You don't want to ping ALL the hosts before you email, do you?

You also don't want to call your function the same thing as an external command, that could infinite-loop or worse.

I don't think you need a function here anyway.

This will work with linux ping but not other pings, which don't all return a value properly.

Code:
for H in $HOSTS
do
        while ! ping -c 1 $H > /dev/null 2> /dev/null
        do
                true
        done

        echo "$H is up"
done

This User Gave Thanks to Corona688 For This Post:
 

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asadmin-ping-connection-pool(1AS)				   User Commands				 asadmin-ping-connection-pool(1AS)

NAME
asadmin-ping-connection-pool, ping-connection-pool - tests that a connection pool is usable SYNOPSIS
ping-connection-pool --user admin_user [--password admin_password] [--host localhost] [--port 4848] [--secure|-s] [--passwordfile filename] [--terse=false] [--echo=false] [--interactive=true] pool_name Tests that a connection pool is usable for both JDBC connection pools and connector connection pools. For example, if you create a new JDBC connection pool for use with an application that is expected to be deployed, before deploying the application, the previously created pool is tested with this command. This command is supported in remote mode only. OPTIONS
--user authorized domain application server administrative username. --password password to administer the domain application server. --host machine name where the domain application server is running. --port port number of the domain application server listening for administration requests. --secure if true, uses SSL/TLS to communicate with the domain application server. --passwordfile file containing the domain application server password. --terse indicates that any output data must be very concise, typically avoiding human-friendly sentences and favoring well- formatted data for consumption by a script. Default is false. --echo setting to true will echo the command line statement on the standard output. Default is false. --interactive if set to true (default), only the required password options are prompted. OPERANDS
poolname name of the connection pool to be tested. Example 1: Using ping-connection-pool Before you can ping a connection pool, you must: o Create a connection pool with authentication. o Make sure the Enterprise Information Server (can be the database) is started. asadmin> ping-connection-pool --user admin1 --password adminadmin1 --host pigeon --port 5001 sampleConnectionPool Command ping-connection-pool executed successfully EXIT STATUS
0 command executed successfully 1 error in executing the command asadmin-create-connector-connection-pool(1AS), asadmin-delete-connector-connection-pool(1AS), asadmin-list-connector-connection-pool(1AS), asadmin-create-jdbc-connection-pool(1AS), asadmin-delete--jdbc-connection-pool(1AS)asadmin- list--jdbc-connection-pools(1AS) J2EE 1.4 SDK March 2004 asadmin-ping-connection-pool(1AS)
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