Serve file through TCP like netcat but with a nicer interface.
Server side:
# Assuming server ip is 192.168.19.19 and we're gonna transfer frpc
./putf -l 0.0.0.0:11451 -f /tmp/frpc
Client side:
cat < /dev/tcp/192.168.19.19/11451 > frpc
Don't forget to md5sum frpc
to check file integrity.