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Full Discussion: How to exit a shell script if a unix command does not return any value for 10 seconds?
Top Forums Shell Programming and Scripting How to exit a shell script if a unix command does not return any value for 10 seconds? Post 302683685 by neutronscott on Wednesday 8th of August 2012 10:18:02 AM
Old 08-08-2012
Does this 'connection string' happen to be ssh? Or maybe something else that has an option for connection timeout?

You can kill a program after 10 seconds, but do you want it dead in 10 seconds if the login was successful? How would you know?
 

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LEARN ABOUT DEBIAN

fence_rsa

FENCE_AGENT(8)						      System Manager's Manual						    FENCE_AGENT(8)

NAME

       fence_rsa - Fence agent for IBM RSA

DESCRIPTION

       fence_rsa  is an I/O Fencing agent which can be used with the IBM RSA II management interface. It logs into an RSA II device via telnet and
       reboots the associated machine. Lengthy telnet connections to the RSA II device should be avoided while a GFS cluster  is  running  because
       the connection will block any necessary fencing actions.

       fence_rsa  accepts  options  on	the  command  line  as	well as from stdin. Fenced sends parameters through stdin when it execs the agent.
       fence_rsa can be run by itself with command line options.  This is useful for testing and for turning outlets on or off from scripts.

       Vendor URL: http://www.ibm.com

PARAMETERS


       -o, --action=<action>
	      Fencing Action (Default Value: reboot)

       -a, --ip=<ip>
	      IP Address or Hostname This parameter is always required.

       -l, --username=<name>
	      Login Name This parameter is always required.

       -p, --password=<password>
	      Login password or passphrase

       -S, --password-script=<script>
	      Script to retrieve password

       -c, --command-prompt=<prompt>
	      Force command prompt (Default Value: >)

       -x, --ssh
	      SSH connection

       -k, --identity-file=<filename>
	      Identity file for ssh

       -u, --ipport=<port>
	      TCP port to use for connection with device

       -v, --verbose
	      Verbose mode

       -D, --debug-file=<debugfile>
	      Write debug information to given file

       -V, --version
	      Display version information and exit

       -h, --help
	      Display help and exit

       --power-timeout
	      Test X seconds for status change after ON/OFF (Default Value: 20)

       --shell-timeout
	      Wait X seconds for cmd prompt after issuing command (Default Value: 3)

       --login-timeout
	      Wait X seconds for cmd prompt after login (Default Value: 10)

       --power-wait
	      Wait X seconds after issuing ON/OFF (Default Value: 0)

       --delay
	      Wait X seconds before fencing is started (Default Value: 0)

       --retry-on
	      Count of attempts to retry power on (Default Value: 1)

ACTIONS


       on     Power on machine.

       off    Power off machine.

       reboot Reboot machine.

       status This returns the status of the plug/virtual machine.

       list   List available plugs with aliases/virtual machines if there is support for more then one device. Returns N/A otherwise.

       monitor
	      Check if fencing device is running. List available plugs/virtual machines or get status of machine (if it does  not  support  more).

       metadata
	       The operational behavior of this is not known.

STDIN PARAMETERS


       action Fencing Action (Default Value: reboot)

       ipaddr IP Address or Hostname This parameter is always required.

       login  Login Name This parameter is always required.

       passwd Login password or passphrase

       passwd_script
	      Script to retrieve password

       cmd_prompt
	      Force command prompt (Default Value: >)

       secure SSH connection

       identity_file
	      Identity file for ssh

       ipport TCP port to use for connection with device

       verbose
	      Verbose mode

       debug  Write debug information to given file

       version
	      Display version information and exit

       help   Display help and exit

       power_timeout
	      Test X seconds for status change after ON/OFF (Default Value: 20)

       shell_timeout
	      Wait X seconds for cmd prompt after issuing command (Default Value: 3)

       login_timeout
	      Wait X seconds for cmd prompt after login (Default Value: 10)

       power_wait
	      Wait X seconds after issuing ON/OFF (Default Value: 0)

       delay  Wait X seconds before fencing is started (Default Value: 0)

       retry_on
	      Count of attempts to retry power on (Default Value: 1)

fence_rsa (Fence Agent) 					    2009-10-20							    FENCE_AGENT(8)
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