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.

haveged generates an unpredictable stream of random numbers for use by Linux's /dev/random and /dev/urandom devices. The kernel's standard mechanisms for filling the entropy pool may not be sufficient for systems with high needs or limited user interaction, such as headless servers.

haveged runs as a privileged daemon, harvesting randomness from the indirect effects of hardware events on hidden processor state using the HAVEGE algorithm. It tunes itself to its environment and provides the same built-in test suite for the output stream as used on certified hardware security devices.

The quality of the randomness produced by this algorithm has not been proven. It is recommended to run it together with another entropy source like rngd, and not as a replacement for it.

Light is a program to send commands to screen backlight controllers under GNU/Linux. Features include:

• It does not rely on X.

• Light can automatically figure out the best controller to use, making full use of underlying hardware.

• It is possible to set a minimum brightness value, as some controllers set the screen to be pitch black at a value of 0 (or higher).

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

This package provides utilities for testing, partitioning, etc of flash storage.

This program allows you read and control device brightness. Devices include backlight and LEDs. It can also preserve current brightness before applying the operation, such as on lid close.

The appropriate permissions must be set on the backlight or LED control interface in sysfs, which can be accomplished with the included udev rules.

This package provides statically-linked fsck.f2fs command taken from the f2fs-tools package. It is meant to be used in initrds.

iw is a new nl80211 based CLI configuration utility for wireless devices. It replaces iwconfig, which is deprecated.

This simple tool injects fake MCEs into a running Linux kernel, to debug or test the kernel's EDAC-handling code specific to x86 and x86_64 platforms.

Real MCEs are internal CPU errors. Handling them correctly can be important to system stability and even prevent physical damage. In contrast, simulated MCEs produced by mce-inject are purely synthetic: injection happens only at the software level, inside the kernel, and is not visible to the platform hardware or firmware.

A convenient feature of mce-inject is that the input language used to describe MCEs is similar to the format used in Linux panic messages, with a few extensions. In general, you should be able to pipe in any logged MCE panic to simulate that same MCE.

The target kernel must have the CONFIG_X86_MCE_INJECT option enabled and the mce-inject module loaded if it exists.

cpuid dumps detailed information about the CPU(s) gathered from the CPUID instruction, and also determines the exact model of CPU(s). It supports Intel, AMD, and VIA CPUs, as well as older Transmeta, Cyrix, UMC, NexGen, Rise, and SiS CPUs.

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

LVM2 is the logical volume management tool set for Linux-based systems. This package includes the user-space libraries and tools, including the device mapper. Kernel components are part of Linux-libre.

The Advanced Linux Sound Architecture (ALSA) provides audio and MIDI functionality to the Linux-based operating system.

kernel-hardening-checker is a tool for checking the security hardening options of the Linux kernel. Provided preferences are based on suggestions from various sources, including:

• KSPP recommended settings

• CLIP OS kernel configuration

• Last public grsecurity patch (options which they disable)

• SECURITY_LOCKDOWN_LSM patchset

• Direct feedback from the Linux kernel maintainers

This tool supports checking Kconfig options and kernel cmdline parameters.

This package contains Advanced Linux Sound Architecture Use Case Manager configuration of audio input/output names and routing for specific audio hardware.

UnionFS-FUSE is a flexible union file system implementation in user space, using the FUSE library. Mounting a union file system allows you to "aggregate" the contents of several directories into a single mount point. UnionFS-FUSE additionally supports copy-on-write.

Powerstat measures and reports your computer's power consumption in real time. On mobile PCs, it uses ACPI battery information to measure the power drain of the entire system.

Powerstat can also report RAPL power domain measurements. These are available only on some hardware such as Intel Sandybridge and newer, and cover only part of the machine's components such as CPU, DRAM, and graphics. However, they provide accurate and immediate readings and don't require a battery at all.

The output is like vmstat but also shows power consumption statistics: at the end of a run, powerstat will calculate the average, standard deviation, and minimum and maximum values. It can show a nice histogram too.

Dwarves is a set of tools that use the debugging information inserted in ELF binaries by compilers such as GCC, used by well known debuggers such as GDB.

Utilities in the Dwarves suite include pahole, that can be used to find alignment holes in structures and classes in languages such as C, C++, but not limited to these. These tools can also be used to encode and read the BTF type information format used with the kernel Linux bpf syscall.

The codiff command can be used to compare the effects changes in source code generate on the resulting binaries.

The pfunct command can be used to find all sorts of information about functions, inlines, decisions made by the compiler about inlining, etc.

The pahole command can be used to use all this type information to pretty print raw data according to command line directions.

Headers can have its data format described from debugging info and offsets from it can be used to further format a number of records.

Finally, the btfdiff command can be used to compare the output of pahole from BTF and DWARF, to make sure they produce the same results.

SimpleIni provides a simple API to read and write INI-style configuration files. It supports data files in ASCII, MBCS and Unicode.

archivemount is a FUSE-based file system for Unix variants, including Linux. Its purpose is to mount archives (i.e. tar, tar.gz, etc.) to a mount point where it can be read from or written to as with any other file system. This makes accessing the contents of the archive, which may be compressed, transparent to other programs, without decompressing them.

ebtables is an application program used to set up and maintain the tables of rules (inside the Linux kernel) that inspect Ethernet frames. It is analogous to the iptables application, but less complicated, due to the fact that the Ethernet protocol is much simpler than the IP protocol.

acpi attempts to replicate the functionality of the "old" apm command on ACPI systems, including battery and thermal information. It does not support ACPI suspending, only displays information about ACPI devices.

This is the Linux kernel ACPI platform driver for the EC firmware on Purism Librem laptop computers. It allows user-space control over the battery charging thresholds, keyboard backlight, fans and thermal monitors, and the notification, WiFi, and Bluetooth LED.

This package provides userspace helpers for memory error detection and correction (EDAC).