How to install a program from github in Ubuntu using the command line?

Question

GitHub

I'll admit right off the bat that I'm new to the Linux world.
The following task arose: to install a program on a remote host.
The manual provides the following sequence of commands. If I try to execute them, then I stumble upon the fact that the axis does not perceive the command as an address ( https://github.com/elmad/darkcoin-cpuminer-1.3-avx... So the question arose: How to proceed? Plus, I ask give a link to the command line manual in such cases
su mining
cd /home/mining/
https://github.com/elmad/darkcoin-cpuminer-1.3-avx...
cd ./darkcoin-cpuminer-1.3- avx-aes/
chmod +x autogen.sh
./autogen.sh
./configure CFLAGS="-O3 -march=native"
make

Answer 1

does not perceive because there is no such command.

https://github.com/elmad/darkcoin-cpuminer-1.3-avx-aes.git

replaced by

git clone https://github.com/elmad/darkcoin-cpuminer-1.3-avx-aes.git