CachyOS & Linux
cheat sheet.

Synchronize repositories and upgrade all packages (full system update).

Install a package from the official repositories.

Remove a package but keep its dependencies.

Remove a package and its unused dependencies.

Caution: Remove a package, its unused dependencies, and config files.

Search for a package in the remote repositories.

Search among locally installed packages.

Display detailed information about an installed package.

Display detailed information about a remote package.

List all files installed by a package.

Find out which package owns a specific file.

List all orphaned packages (installed as dependencies, no longer needed).

Caution: Remove all orphaned packages and their config files.

Remove old packages from the package cache.

Caution: Remove all cached packages from the cache directory.

Install a package from a local file.

Caution: Refresh the package database without upgrading. Avoid using this alone: later installs can cause unsupported partial upgrades. Use sudo pacman -Syu for normal updates.

List all packages with available upgrades.

List all explicitly installed packages with their versions. Use pacman -Qqe for package names only when backing up your package list.

Update all packages including AUR packages with paru.

Install a package from the AUR or official repos with paru.

Search for a package in AUR and official repositories.

Install from AUR and open PKGBUILD in nano before building.

Update all packages including AUR packages with yay.

Install a package from the AUR or official repos with yay.

Search AUR and official repos for a package.

View AUR comments for a package (paru only).

Updates AUR git-based packages (those ending in -git) to their latest commit.

List all files (including hidden) with detailed permissions and metadata.

Change the current working directory.

Print the full path of the current working directory.

Create a directory and all parent directories as needed.

Copy a file or directory recursively to the destination.

Move or rename a file or directory.

Caution: Forcefully remove a file or directory and all its contents. Irreversible!

Create an empty file or update the timestamp of an existing one.

Create a symbolic link pointing to the target.

Show the directory structure as a tree, 2 levels deep.

Show total disk usage of a directory in human-readable form.

Show disk space usage of all mounted filesystems.

Print all system information: kernel, hostname, OS, architecture.

Show system hostname, kernel, OS, and architecture details.

Display detailed CPU architecture and core information.

Show RAM and swap usage in human-readable format.

List all block devices (disks and partitions) with their mount points.

List all PCI devices (GPU, network cards, etc.).

List all USB devices currently connected to the system.

Display a full, detailed hardware and software system summary.

Show the last 50 kernel log messages (useful for hardware debugging).

Caution: Reboot the system immediately.

Caution: Shut down and power off the system.

Show or set the system time, date, and timezone.

Interactive process viewer — shows CPU, RAM usage per process.

List all currently running processes with user, PID, CPU/RAM.

Search for a running process by name.

Caution: Forcefully terminate a process by its PID. Use with caution!

Caution: Kill all running instances of a process by name.

Check the status of a systemd service.

Start a systemd service.

Stop a running systemd service.

Restart a systemd service.

Enable a service to start at boot and start it immediately.

Disable a service from starting at boot.

Show the most recent systemd journal logs with explanations.

Follow live log output of a specific systemd service.

Show all network interfaces and their IP addresses.

Display the IP routing table (shows default gateway etc.).

Send 4 ICMP packets to a host to test connectivity.

Fetch and display HTTP response headers from a URL.

Download a file from the internet.

Show all listening TCP/UDP ports with associated processes.

List all available Wi-Fi networks.

Connect to a Wi-Fi network using NetworkManager CLI.

Trace the network path (hops) to a remote host.

Query DNS records for a domain.

Connect to a remote host via SSH.

Securely copy a file to a remote host over SSH.

Set file permissions to rwxr-xr-x (owner: rwx, group/others: r-x).

Recursively change permissions of all files in a directory.

Change the owner and group of a file or directory.

Caution: Recursively change owner and group of a directory.

Print the current logged-in username.

Show UID, GID, and all group memberships for a user.

Create a new user with a home directory and add them to the wheel (sudo) group.

Change the password of a user.

Add a user to a supplementary group without removing existing groups.

Caution: Safely edit the /etc/sudoers file to manage sudo privileges.

Print the contents of a file to the terminal.

View a file with scrolling support (q to quit, / to search).

Recursively search for a text pattern in all files under a path.

Recursively search and show matching line numbers.

Find files matching a name pattern under a given path.

Find all files modified in the last 7 days.

Replace all occurrences of 'old' with 'new' in a file in-place.

Print the first column/field from each line of a file.

Continuously follow and display new lines appended to a log file.

Print the first 20 lines of a file.

Count and sort unique occurrences of lines in a file.

Count the number of lines in a file.

Open the CachyOS Hello welcome app for post-install setup.

Install the default CachyOS optimized kernel.

Install the CachyOS kernel with the BORE scheduler for desktop responsiveness.

Install the CachyOS kernel with the EEVDF scheduler.

Install CachyOS system settings/tweaks for performance optimization.

Automatically rate and select the fastest CachyOS mirrors.

Rate Arch mirrors by speed and write the sorted list to mirrorlist.

Regenerate all initramfs images (required after kernel/hook changes).

Regenerate the GRUB configuration file (e.g., after kernel change).

Update the systemd-boot EFI bootloader.

Check the current CPU frequency scaling governor.

Set all CPU cores to 'performance' governor for maximum speed.

Enable and start ananicy-cpp for automatic process priority management.

Enable IRQ balancing across CPU cores for better performance.

Create a gzip-compressed tar archive from a directory or file.

Extract a gzip-compressed tar archive in the current directory.

Extract a tar archive into a specific destination directory.

Create a highly-compressed XZ tar archive.

Create a ZIP archive from a file or directory.

Extract a ZIP archive to a destination directory.

Extract a 7-Zip archive in the current directory.