password security

Learn to securely hash passwords using `sha256sum` and a salt in Linux Bash. This method converts passwords into fixed-size hashes for enhanced security. It includes generating a salt, combining it with the password, and then hashing and storing both the salt and resulting hash to protect against cryptographic attacks.

`sshpass` facilitates non-interactive SSH logins, useful for automation but risky due to potential password exposure. Safely use it by storing passwords in environment variables or secure files, and always clean up after use. Prefer SSH keys for enhanced security but use `sshpass` securely when needed.