command execution

[Sayed, Irfan \(Irfan\)]

Hi All,
 
I am executing following command 
 
` $MT chreplica`;
 
I need to find out wheather this command is executing properly or not.
 
If it's executing properly then i need to print the message saying that
" command executed successfully"
 
Can anybody please help me.
 
Regards
Irfan.