Linux connectivity test without telnet client

 During connectivity tests on Linux environment, you may find the telnet client is not installed.

 You can use the following command to test it

  cat < /dev/tcp/host_name/5555 

 Where host_name is the server name you want to test the connectivity at DP inet port (5555).

You also can use server IP address:

cat < /dev/tcp/10.10.10.10/5555