Cisco copy destinations

You can list these with copy running-config ?

 flash:          Copy to flash file
 ftp:            Copy to current system configuration
 scp:            Copy to scp: file system
 startup-config  Copy to startup configuration
 tftp:           Copy to current system configuration

You'd run something similar to the command below:

copy running-config flash:

It will then ask you to specify a name for the file.