if you have tar.gz file do like that to extract files:
tar xzf bitcoin-0.14.2-x86_64-linux-gnu.tar.gz
install it
sudo install -m 0755 -o root -g root -t /usr/local/bin bitcoin-0.14.2/bin/*
finally, run it
if you mean by “you copied all the files” that you copied .bitcoin directory so do like that after the previous step:
move the files you copied to this directory and execute













