Always use `mktemp` instead of manually constructing temporary file paths with random values. Manually constructed paths with elements like `$RANDOM` or timestamp values can be vulnerable to race conditions, predictability issues, and permission problems, potentially leading to security exploits. **Instead of:** ```bash cpath="/tmp/ghostty-ssh-$USER-$RANDOM-$(date +%s)" ``` **Use:** ```bash cpath=$(mktemp -d /tmp/ghostty-ssh-XXXXXX) # or for a file cpath=$(mktemp /tmp/ghostty-ssh-XXXXXX) ``` The `mktemp` utility creates unique temporary files/directories safely, sets appropriate permissions, and handles race conditions properly. This prevents potential security vulnerabilities like file-based race conditions, symbolic link attacks, and information disclosure that could occur with manually constructed paths.