Hands-on Cursor Agent Skills for beginners — what a skill is, where it lives, how to write a SKILL.md, and how the agent picks it up.
Read More →Hands-on Git branching — create a feature branch, push it with upstream tracking, merge back into main, and clean up local and remote branches.
Read MoreHands-on Git for the stuck push — fetch remote changes, resolve merge conflicts, then revert or roll back commits safely.
Read MoreWhen to put an API gateway in front of your services, the trade-offs that matter, and a working Spring Cloud Gateway Server Web MVC example on the Servlet stack.
Read MoreHands-on Git for beginners — init a repo, stage and commit safely, read diffs, and push your first project to a remote.
Read MoreHands-on triage with htop, journalctl, dmesg, and lsof — diagnose high load and crashes by chaining the right tool at each step.
Read MoreHands-on batch editing on the command line — find the right files, feed them safely through xargs, and rewrite them with sed.
Read MoreMore recent posts from the archive.
Hands-on df and du recipes — check filesystem free space, hunt directory hogs, and resolve “no space left on device” with confidence.
Read More →Hands-on ss and netstat recipes — list listening sockets, inspect open connections, check routing tables, and read interface statistics.
Read More →Hands-on kill, pkill, and killall recipes — choose SIGTERM, SIGKILL, or SIGHUP, target the right PIDs, and stop processes without wrecking managed services.
Read More →Hands-on lsof recipes for everyday work — find which processes hold files open, bind ports, or leak file descriptors.
Read More →Hands-on chmod, chown, and umask recipes — decode numeric vs symbolic modes, fix ownership, and understand default permissions for new files.
Read More →Hands-on xargs recipes for everyday work — feed find and grep into commands, batch safely, and place arguments where they belong.
Read More →Hands-on journalctl recipes for everyday work — filter by unit, severity, time range, and boot, then read the results with confidence.
Read More →Hands-on sed recipes for everyday work — substitute text, delete lines, edit files in place, and reshape output in pipelines.
Read More →Hands-on ps and pgrep recipes — locate processes by PID, user, memory footprint, or command path without a live monitor.
Read More →Hands-on dmesg recipes for everyday work — inspect boot messages, chase hardware faults, filter by level, and watch the kernel live.
Read More →Hands-on top, htop, and btop recipes — read load averages, find CPU and memory hogs, and triage a busy box in real time.
Read More →Hands-on find recipes for everyday work — hunt by name, type, size, and time, then act on matches with confidence.
Read More →Hands-on awk recipes for everyday work — pick columns, filter rows, change separators, and compute totals in pipelines.
Read More →Hands-on grep recipes for everyday work — find text, filter logs, search codebases, and pipe results with confidence.
Read More →Learn the Linux filesystem hierarchy — what /, /etc, /var, /usr, /home and friends are for, and when to look in each one.
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