Command Practice Tracks

Drill Alpine Linux specific commands. Master the apk package manager for Dockerfiles and OpenRC service management for lightweight VMs.

Drill awk commands for $1/$NF fields, /pattern/ filters, -F separators, and BEGIN/END sums until the program you type splits the line.

Drill bash syntax: parameter expansion, special variables, set -o options, redirection operators, and test conditions until the syntax is muscle memory.

Drill cron expressions and crontab commands — manage schedules with -e/-l/-r and write the five-field syntax from memory.

Drill curl commands for GET/POST, custom headers, basic auth, -o downloads, and -L redirects until the flag set is muscle memory.

Drill the docker cli for run, exec, volumes, networks, and Compose — terminal commands, not a container dashboard.

Drill the find command for name, type, size, depth, and -exec — quizzes that score the expression you type, not a GUI search box.

Practice git commands for staging, branching, rebase, and restore — quizzes that check the typed subcommand, not a GUI click.

Practice grep commands for recursive search, invert match, regex, and context lines until -r -n -v is muscle memory.

Drill essential Homebrew commands for managing macOS and Linux packages, installing casks, and maintaining your local development environment.

Drill lsof command filters for open ports, process files, user activity, and network sockets until the flag set is second nature.

Drill netcat (nc) flags for TCP/UDP listeners, port scanning, banner grabbing, and raw file transfer pipelines until the flags are reflexive.

Drill netstat flags for active connections, listening ports, routing tables, interface stats, and process ownership until the flag combos are automatic.

Drill nginx CLI commands and config directives — server blocks, location matching, proxy_pass headers, gzip, and security rules until they are muscle memory.

Drill nmap flags for port ranges, timing templates, service version detection, OS detection, and scan output formats on authorised targets.

Drill openssl subcommands and flags for generating CSRs, inspecting x509 certificates, managing RSA keys, and testing TLS connections.

Drill chmod commands for octal modes, symbolic u+x edits, and chown ownership until 755 and u+x stay distinct.

Drill the holy trinity of Linux process management: inspect processes with ps, send signals with kill, and control background tasks with jobs.

Write sql queries against a small company schema: SELECT, JOIN, WHERE, GROUP BY, and aggregates with live result checks.

Drill ssh commands for remote login, port forwarding (-L/-R/-D), key generation, and ProxyJump until the flags are muscle memory.

Drill GNU Screen CLI flags and Ctrl+a interactive shortcuts for managing sessions, windows, regions, and background tasks.

Drill sed commands for s///g, line delete, -n print, and in-place -i until the script you type is the one that edits the stream.

Drill systemd commands for systemctl start/enable, list-units, and journalctl -u/-f until the unit you type is the one that starts or logs.

Drill tar commands for create, extract, gzip/xz packs, and -C directories until -czvf and -xvf stay distinct.

Drill telnet CLI flags and internal prompt commands for testing raw TCP port connectivity and managing legacy network sessions.

Drill tmux shortcuts for Ctrl+b panes, windows, sessions, and copy-mode until the prefix chord you type is the one that splits or detaches.

Drill vim keyboard shortcuts — motions, operators, text objects, buffers, and vimdiff — with key-sequence quizzes that build real editor muscle memory.