Using Netcat for File Transfers. Netcat is like a swiss army knife for geeks.

NetCat with Progress.md

$ pv TensorRT-7.2.1.6.Ubuntu-18.04.x86_64-gnu.cuda-11.0.cudnn8.0.tar.gz | nc -w 3 172.17.0.2 6969 nc -l -p 6969 > TensorRT-7.2.1.6.Ubuntu-18.04.x86_64-gnu.cuda-11.0.cudnn8.0.tar.gz

NetCat-Transfer.md

On the receiving end running, nc -l -p 1234 > out.file
On the sending end running, nc -w 3 [destination] 1234 < out.file

For faster transfers if both sender and receiver has some basic *nix tools installed, you can compress the file during sending process,
On the receiving end, nc -l -p 1234 | tar x
On the sending end, tar cf - /some/dir | nc -w 3 [destination] 1234

A much cooler but less useful use of netcat is, it can transfer an image of the whole hard drive over the wire using a command called dd.
On the sender end run, dd if=/dev/hda3 | gzip -9 | nc -l 3333
On the receiver end, nc [destination] 3333 | pv -b > hdImage.img.gz

Be warned that file transfers using netcat are not encrypted, anyone on the network can grab what you are sending, so use this only on trusted networks.
Ref

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Pull file FROM listener back TO Client
$ nc -l -p 5555 < giving_a_file.
$ nc -w 3 TargetIP Port > receving_a_file.
SANS Ref