If backing up files from a bootflash on a NX-OS or IOS device it is possible to copy a file located an bootflash to a local server system. Pulling files from routers bootflash to server directory:
NX-OS:
user % scp username@nx-os-switch:license.tar .
IOS:
user % scp username@ios-switch:file.txt .
Pushing files from routers bootflash to a server directory:
NX-OS:
R1#copy running-config scp://username@server/directory/
IOS:
R1#copy running-config scp://username@server/directory/