Ravi Sir's Cyber Security Cards › Revision Cards
Remote Access: ssh, scp, rsync and Environment Variables
Remote Access: ssh, scp, rsync and Environment Variables ssh : log in to a server. scp : copy a file to or from it. rsync : copy only the changes. Environment variables are named settings a program can read. .env files often hold database passwords and API keys. If the web server shows .env, or it i
Read card text
What this card says
What it is
ssh: log in to a server. scp: copy a file to or from it. rsync: copy only the changes.
Environment variables are named settings a program can read.
Why it matters for security
.env files often hold database passwords and API keys.
If the web server shows .env, or it is in a Git repo, everything leaks. Keep secrets outside the web folder, with permission 600.
Common mistake
Forgetting the colon in scp. scp file ec2-user@IP makes a local file with that name.
Write ec2-user@IP:~/.
Learn more in the lesson: 6.10 Remote Access: ssh, scp, rsync and Environment Variables