router#write ?                                                              
  erase     Erase NV memory                                                     
  memory    Write to NV memory                                                  
  network   Write to network TFTP server                                        
  terminal  Write to terminal                                                   
  <cr>

router#configure ?                                                          
  memory             Configure from NV memory                                   
  network            Configure from a TFTP network host                         
  overwrite-network  Overwrite NV memory from TFTP network host                 
  terminal           Configure from the terminal                                
  <cr>                                                                          

router#dir system:/

router#dir nvram:/

router#dir flash:/

router#more system:/running-config

router#more nvram:/startup-config

router#copy system:/running-config nvram:/startup-config

router#copy running-config startup-config

router#copy running-config tftp://server/rw/router.conf  !!!не во всех реализациях tftp

router#more tftp://server/firewall.acl

router#copy tftp://server/firewall.acl running-config