Ping scripting Post: 303024357

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Top Forums Shell Programming and Scripting Ping scripting Post 303024357 by RudiC on Sunday 7th of October 2018 04:38:00 AM

10-07-2018

Registered User

Welcome to the forum.

Quote:

Originally Posted by Jeffm0342

This is my first posting here, I haven't found exactly what I'm looking for anywhere else so I'm hoping you all can help. I have a portion of script here that needs to ping two servers, then return whether they are up or down (somehow), and then echo that information. Here is what I have so far. It does echo up/down, but the information doesn't change regardless of the ping success.

Not quite true. It does change: 2 up, 0 down, if the last ping fails, 1 up, 1 down, if it succeeds.

There seems to be one basic misunderstanding: the $? variable represents the exit code of the last command executed; the before last's is overwritten. So your first ping's result is lost. So, you need to evaluate it after each ping, e.g. with another if construct. Doable, but tedious and ineffective.

How about a different approach? Collect the respective exit codes, and do some math afterwards? Like

Code:

ping -c1 -W1 192.168.0.1 > /dev/null; X1=$?
ping -c1 -W1 192.168.0.1 > /dev/null; X2=$?
echo "Servers up: $((2-X1-X2)) Servers down: $((X1+X2))"

The -q is redundant if you redirect output to /dev/null. I introduced the -W timeout option to reduce execution / waiting time.

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LEARN ABOUT SUNOS

asadmin-ping-connection-pool

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)