People always hate it when Cisco IOS asks you for things that you have already supplied in a command line, the most notable case being the copy command. For example, if you supply the complete source and destination file name in the command line, IOS still insists on asking you all the same questions (at least filling in the parameters I've supplied in the command line):
fw#copy system:running-config tftp://10.0.0.2/fw-testYou can disable the annoying questions with the file prompt quiet configuration command (the default value of this parameter is noisy).
Source filename [running-config]?
Address or name of remote host [10.0.0.2]?
Destination filename [fw-test]?
2009 bytes copied in 0.604 secs (3326 bytes/sec)
fw#configure terminalHowever, if you decide to use this configuration command, you might be surprised by its side effects - whenever you don't specify a parameter, the router tries to use its default value and you might not like what you get. Consider this sequence:
Enter configuration commands, one per line. End with CNTL/Z.
fw(config)#file prompt quiet
fw#copy system:running-config tftp://10.0.0.2/fw-test
2009 bytes copied in 0.616 secs (3261 bytes/sec)
fw#copy system:running-config tftp:Could you guess what the remote file name is in this case? I couldn't and had to look into the TFTP server log. Turns out the router uses router-name-confg as the default file name.
Address or name of remote host ? 10.0.0.2
2009 bytes copied in 0.600 secs (3348 bytes/sec)