Copying with SCP

Even if you don’t already know how to use the command, scp should be a bit more familiar to you thanks to its similarity to ssh. The biggest differences come with specifying file/directory paths.

Download file/directory

scp user@ssh.example.com:/path/to/remote/source /path/to/local/destination

scp -r user@ssh.example.com:/path/to/remote/source /path/to/local/destination

Upload file/directory

scp /path/to/local/source user@ssh.example.com:/path/to/remote/destination 

scp -r /path/to/local/source user@ssh.example.com:/path/to/remote/destination

Tar + Gzip/Gunzip

On Linux, gzip is unable to compress a folder, it used to compress a single file only. To compress a folder, you should use tar + gzip, which is tar -z.

Create archive

tar -zcvf archive.tar.gz folder1/ folder2/ folder3/ ..

Inflate archive

tar -xvf archive.tar.gz

Generating a new SSH key

In a terminal, execute the following command

ssh-keygen -t rsa -b 4096 -C "your_email@example.com"

Copy the key to <HOME>/.ssh folder and set the right permissions

cp <key> ~/.ssh/id_rsa
chmod -R 700 ~/.ssh

For more details/steps follow this link: https://help.github.com/en/github/authenticating-to-github/generating-a-new-ssh-key-and-adding-it-to-the-ssh-agent