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Full Discussion: Perform an action if certain text exist in output (PERL)
Top Forums Shell Programming and Scripting Perform an action if certain text exist in output (PERL) Post 302777349 by Corona688 on Thursday 7th of March 2013 05:19:06 PM
Old 03-07-2013
When most of your "perl" is shell statements in backticks, you're fighting the language. Each individual set of backticks is its own independent shell anyway, you might as well use one shell instead of thirty.

Code:
#!/bin/sh

while read LINE
do
        # This works for Linux ping.
        # Solaris ping just prints 'x is alive' all by itself
        # others may vary.
        if ping -c 1 $LINE
        then
                echo "$LINE is alive"
        else
                echo "Couldn't ping $LINE"
        fi
done

I feel your pain, I learned Perl first too, but trying to use it as a shell just makes ugly code -- you'll spend most of your time, effort, and code getting things in and out of shell.

Strip out the perl, keep the shell, and you can do the same job faster in half the code.

You might find it better to process ping's output than nslookup's output, they both look up domain names.
Last edited by Corona688; 03-07-2013 at 06:25 PM..
 

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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)
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