Cheatsheets
Cheatsheets are compact, copy-paste friendly references for common Linux commands and tools, so you can find syntax, options, and examples quickly.
date Cheatsheet
Quick reference for the Linux date command covering display formats, format specifiers, relative dates, timezones, Unix timestamps, and setting the system clock.
pip Cheatsheet
Quick reference for pip commands covering package installation, version constraints, requirements files, upgrades, virtual environments, and configuration.
cut Cheatsheet
Quick reference for extracting fields, bytes, and characters with cut in Linux
dig Cheatsheet
Quick reference for querying DNS records, tracing resolution, and debugging name resolution with dig
Ansible Cheatsheet
Quick reference for Ansible commands, inventories, playbooks, modules, and vault
OpenSSL Cheatsheet
Quick reference for OpenSSL commands for keys, CSRs, certificates, format conversion, TLS testing, random data, and hashes
npm Cheatsheet
Quick reference for npm commands for project setup, dependency management, scripts, updates, and package inspection
Podman Cheatsheet
Quick reference for Podman commands and rootless container workflows
dpkg Cheatsheet
Quick reference for installing, removing, querying, and inspecting Debian packages with dpkg
reboot Cheatsheet
Quick reference for rebooting and scheduling restarts on Linux
ripgrep Cheatsheet
Quick reference for recursive text searches with the ripgrep command
ss Cheatsheet
Quick reference for listing sockets, listening ports, connection states, and process owners with the ss command
nmcli Cheatsheet
Quick reference for using nmcli to manage NetworkManager devices, connection profiles, Wi-Fi, static IP addresses, DNS, and troubleshooting
fdisk Cheatsheet
Quick reference for fdisk commands: list disks, create partition tables, add partitions, change partition types, write changes, and quit safely
SFTP Cheatsheet
Quick reference for the Linux sftp client, covering login, navigation, transfers, and remote file management over SSH
cd Cheatsheet
Quick reference for changing directories with cd in Linux
netstat Cheatsheet
Quick reference for listing network connections, listening ports, routes, interface counters, and protocol statistics with netstat
Netcat Cheatsheet
Quick reference for using the Netcat nc command to test ports, listen for connections, transfer files, and send raw network requests
timedatectl Cheatsheet
Quick reference for checking time status, changing time zones, controlling NTP sync, and setting the system clock with timedatectl
PostgreSQL Cheatsheet
Quick reference for connecting to PostgreSQL, managing databases and roles, granting privileges, and running backup commands.
du Cheatsheet
Quick reference for the du command: check directory sizes, human-readable output, depth limits, sorting by size, exclusions, and apparent size.
nslookup Cheatsheet
Quick reference for querying DNS records and checking name resolution with nslookup
tail Cheatsheet
Quick reference for viewing the end of files, following logs, and using tail with lines, bytes, and pipelines in Linux
htop Cheatsheet
Quick reference for monitoring processes, sorting tasks, filtering output, and managing processes with htop in Linux
lsof Cheatsheet
Quick reference for finding open files, processes, ports, and deleted files with lsof in Linux
fsck Cheatsheet
Quick reference for fsck: check Linux filesystems, run safe repairs, force checks, review exit codes, and handle boot-time recovery
firewalld Cheatsheet
Quick reference for managing firewall rules with firewalld on Linux
df Cheatsheet
Quick reference for the df command: check disk space, display formats, filesystem filtering, inodes, and custom output fields
top Cheatsheet
Quick reference for monitoring processes, CPU, and memory usage with top in Linux
diff Cheatsheet
Quick reference for the diff command: compare files, output formats, filtering, and patch workflow