How do I connect to a cloud server using SSH?

Use ssh -i ~/.ssh/your_key.pem user@server-ip -p port. Make sure your private key file has permissions set to 600 before connecting.

How do I copy files between local and remote servers?

Use scp for one-off transfers (scp file.txt user@host:/path/) or rsync -avz for incremental, resumable syncs.

What is the difference between kill and kill -9?

kill sends a graceful termination signal (SIGTERM) that a process can catch and clean up after. kill -9 sends SIGKILL, which force-stops the process immediately with no cleanup.

How do I safely back up a MySQL or PostgreSQL database?

For MySQL use mysqldump -u root -p dbname > backup.sql. For PostgreSQL use pg_dump dbname > backup.sql. Store backups off-server and test restores periodically.

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Bypass the GUI. 230+ direct server control commands — SSH, Git, Docker, Kubernetes, databases, and cloud instance troubleshooting, all in one searchable reference.

Whether you're SSH-ing into a cloud instance from your phone, syncing a local database, or debugging a production server at 2 AM, this page collects the terminal commands developers actually reach for — organized by category, tagged by difficulty, and ready to copy with one tap. Bookmark it; it's built to be your default reference instead of re-Googling the same tar flags every time.

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// The Ultimate Terminal & SSH Reference

Welcome to the Velqur Terminal & SSH Cheat Sheet, meticulously curated by Ankit Shrivastav. This page is designed to be the ultimate reference guide for developers, system administrators, and backend engineers. Whether you are managing cloud instances via mobile SSH terminal commands, debugging server logs, or executing local database sync scripts, this comprehensive list has you covered.

We have compiled over 230+ highly practical commands covering everything from core Linux system operations and file management to advanced Docker containerization, Kubernetes (kubectl) orchestration, and Git version control. We also included specialized commands for managing databases like MySQL, PostgreSQL, and MongoDB directly from the command line.

Stop memorizing complex flags and syntax. Use our instant search feature to find exactly what you need—whether it's a backend data controller troubleshoot command, a firewall rule, or a cron job schedule—and copy it with a single click. Bookmark this page to turbocharge your daily development workflow and server management tasks.