COPY (copies configuration information to specified location)
When a configuration is copied into RAM from ANY SOURCE,it is merged.If a configuration file is being copied into NVRAM or a TFTP server,it is copied.
COPY RUNNING-CONFIGURATION STARTUP-CONFIGURATION or WRITE MEMORY ;saves the current configuration to NVRAM.
COPY RUNNING STARTUP ;copies configuration from RAM to NVRAM.
COPY STARTUP RUNNING ;merges configuration from NVRAM to RAM.
COPY TFTP RUN ; merges configuration from TFTP to RAM.
COPY RUN TFTP ;copies configuration from RAM to TFTP.YOU will need to copy a router’s configuration to a TFTP server if it is larger than 32,000 bytes,which is the largest configuration that can fit into RAM.
COPY START TFTP ; copies configuration from NVRAM to TFTP.
COPY FLASH TFTP ;copies current IOS from router flash memory to network server.
COPY TFTP FLASH ;copies image file from TFTP server to flash.This is used to upgrade the IOS image file to a newer version,or if your IOS image becomes corrupt.
——————- Thanks Everyone