Can't connect client to server using socket

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http://stackoverflow.com – I am having a problem when I try to connect a client to a server.The method of running is : server 51717 and client localhost 51717. My problem is , when I run the client I'm getting this error on the command line : No command 'client found, did you mean : Command 'jclient' from package 'julius' (multiverse). client :command not found.I must specify that the server is running when I run the client. Please let me know if somebody knows how can solve this.Thanks. (HowTos)