Btrfs is a CoW file system for Linux aimed at implementing advanced features while focusing on fault tolerance, repair and easy administration.

libnetfilter_log is a userspace library providing interface to packets that have been logged by the kernel packet filter. It is is part of a system that deprecates the old syslog/dmesg based packet logging. This library has been previously known as libnfnetlink_log.

1. receiving to-be-logged packets from the kernel nfnetlink_log subsystem

This package provides tools for manipulating ext2/ext3/ext4 file systems.

OpenFabrics Interfaces (OFI) is a framework focused on exporting fabric communication services to applications. OFI is best described as a collection of libraries and applications used to export fabric services. The key components of OFI are: application interfaces, provider libraries, kernel services, daemons, and test applications.

Libfabric is a core component of OFI. It is the library that defines and exports the user-space API of OFI, and is typically the only software that applications deal with directly. It works in conjunction with provider libraries, which are often integrated directly into libfabric.

GNU Linux-Libre is a free (as in freedom) variant of the Linux kernel. It has been modified to remove all non-free binary blobs.

NTFS-3G provides read-write access to NTFS file systems, which are commonly found on Microsoft Windows. It is implemented as a FUSE file system. The package provides additional NTFS tools.

libnfnetlink is the low-level library for netfilter related kernel/userspace communication. It provides a generic messaging infrastructure for in-kernel netfilter subsystems (such as nfnetlink_log, nfnetlink_queue, nfnetlink_conntrack) and their respective users and/or management tools in userspace.

efibootmgr is a user-space application to modify the Intel Extensible Firmware Interface (EFI) Boot Manager. This application can create and destroy boot entries, change the boot order, change the next running boot option, and more.

GNU Linux-Libre is a free (as in freedom) variant of the Linux kernel. It has been modified to remove all non-free binary blobs.

cachefilesd is a userspace daemon that manages the cache data store that is used by network file systems such as AFS and NFS to cache data locally on disk. The content of the cache is persistent over reboots.

Tmon is a tool to interact with the complex thermal subsystem of the kernel Linux. It helps visualize thermal relationships and real-time thermal data, tune and test cooling devices and sensors, and collect thermal data for further analysis.

As computers become smaller and more thermally constrained, more sensors are added and new cooling capabilities introduced. Thermal relationships can change dynamically. Their complexity grows exponentially among cooling devices, zones, sensors, and trip points.

Linux exposes this relationship through /sys/class/thermal with a matrix of symbolic links, trip point bindings, and device instances. To traverse it by hand is no trivial task: tmon aims to make it understandable.

rfkill is a simple tool for accessing the rfkill device interface, which is used to enable and disable wireless networking devices, typically WLAN, Bluetooth and mobile broadband.

Zerofree finds the unallocated blocks with non-zero value content in an ext2, ext3, or ext4 file system and fills them with zeroes (or another value). This is a simple way to make disk images more compressible. Zerofree requires the file system to be unmounted or mounted read-only.

This package provides a Python library to access I2C and SMBus devices on Linux.

The libnl suite is a collection of libraries providing APIs to netlink protocol based Linux kernel interfaces. Netlink is an IPC mechanism primarily between the kernel and user space processes. It was designed to be a more flexible successor to ioctl to provide mainly networking related kernel configuration and monitoring interfaces.

This package provides the documentation for the kernel Linux-Libre, as an Info manual. To consult it, run info linux.

The reform2_lpc module allows for interaction with the NXP LPC11U24 Cortex-M0 MCU system controller in the Reform 2 open hardware laptop. It provides battery status information and is necessary to completely shut down the system when powering it off via userspace.

ryzenadj is an utility to adjust power management settings for AMD Ryzen mobile processors. You will need to ensure it can access /dev/mem, for instance by using the "iomem=relaxed" kernel argument.

This package provides an advanced monitor of critical system resources, supervises the heartbeat of processes, records deadline transgressions, and initiates a controlled reset if needed.

mdadm is a tool for managing Linux Software RAID arrays. It can create, assemble, report on, and monitor arrays. It can also move spares between raid arrays when needed.

NUMA stands for Non-Uniform Memory Access, in other words a system whose memory is not all in one place. The numactl program allows you to run your application program on specific CPUs and memory nodes. It does this by supplying a NUMA memory policy to the operating system before running your program.

The package contains other commands, such as numastat, memhog, and numademo which provides a quick overview of NUMA performance on your system.

This package provides a way to record and replay device descriptions and events, making it possible to emulate input devices through the Linux kernel's input system. Emulated devices are for most practical purposes indistinguishable from real devices.

It provides a command line program and also a Python library.

Extundelete is a set of tools that can recover deleted files from an ext3 or ext4 partition.

This package provides a driver for the XBox One S Wireless controller and some newer models when connected via Bluetooth. In addition to the included Linux kernel module, it also contains a modprobe configuration and udev rules, which need to be installed separately.