systemd & Service Commands
systemctl and journalctl — the everyday commands for starting, stopping, enabling, and reading logs for services managed by systemd.
systemctl and journalctl — the everyday commands for starting, stopping, enabling, and reading logs for services managed by systemd.
top, htop, vmstat, iostat, free, and uptime — the commands for reading CPU, memory, disk I/O, and load on a live Linux system.
tar, gzip, zip, and rsync — bundling, compressing, and transferring files and directories on Linux.
apt, yum/dnf, rpm, and dpkg — installing, updating, removing, and querying software packages across Debian- and Red Hat-based distros.
df, du, lsblk, mount, and the commands for inspecting disk usage, partitions, and filesystems on Linux.
ip, ss, curl, dig, and the essential command-line tools for configuring, inspecting, and troubleshooting networking on Linux.
chmod, chown, useradd, usermod, sudo, and the everyday commands for managing file permissions, ownership, and user accounts.
ps, top, htop, kill, nice, and job control commands for inspecting and managing running processes on Linux.
grep, sed, awk, cut, sort, uniq, and the Unix pipeline philosophy — the tools that let you slice and transform text without writing a …
A single-page, at-a-glance Linux command reference — files, permissions, processes, networking, text processing, disk, packages, archiving, …
The essential Linux commands for navigating, creating, copying, moving, and searching files and directories, with real flags and use cases.