Answer / rohit kumar

Assuming that server A is reachable from server B and vice
versa:

We can execute the command remotely using rsh and by using
admin credentials of server B as below from server A:

rsh <server B IP> -l <admin login name> -n "ps -eaf | grep -
i <service_name>"

For eg; to find httpd service we can use the following
command assuming server B IP is 10.0.0.10 and root has
admin previledges:

rsh 10.0.0.10 -l root -n "ps -eaf | grep -i httpd"

Answer / shh

rsh command
executes command on the specified hostname. To do so, it
must connect to a rshd service (or daemon) on the hostname
machine


rsh [username@]hostname [-DNn] [-l username] command

-D
enables socket debugging on the TCP sockets used for
communication with the remote host. This option also
displays the locuser and remuser being sent to rshd

-l username
specifies the remote user name to be used when executing
the command. This can also be specified by including
username@hostname on the command line


-N
does not generate a separate standard error stream. All
output is sent to standard output. This is useful when you
are running an interactive command


-n
redirects input from the special device /dev/nul.

Answer / sai kiran

ex:
if u r connecting from server B to A

ssh A ls

but make sure that to create a private key for these servers

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