What should I know about Linux before joining an MCA?

Linux is valuable for MCA students because many servers, development environments and cloud systems use Linux. Basic shell commands, permissions, processes and package management are useful starting points. This makes Linux more valuable when it is supported by hands-on practice and a clear explanation of what you built. This point is specifically relevant to the Linux aspect of MCA study. For this specific question about Linux, the practical takeaway is to relate the concept to your own MCA learning goal.