sudo cp /home/adam/file.txt smb://nas/main/

sudo cp /home/adam/file.txt /media/networkdrive

sudo apt-get install cifs-utils

sudo mount -t cifs -o <Options> //<Server>/<Sharename> <Mountpoint>

sudo mount -t cifs -o credentials=~/.smbcredentials //nas/shared_folder /media/nas_shared

username=<username of the share>
password=<password of the share>

//<Server>/<Sharename> <Mountpoint> cifs credentials=/home/user/.smbcredentials  0 0

mount

lsblk