Bitcoin Core Offline Reinstallation It is possible to reinstall Bitcoin Core Offline? I copied all the files to my external HDD. I use Ubuntu. Thanks
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


bitcoind -daemon


if you mean by "you copied all the files" that you copied .bitcoin directory so do like that after the previous step:


mkdir ~/.bitcoin


move the files you copied to this directory and execute 


bitcoind -daemon