This simple daemon feeds entropy from the CPU Jitter RNG core to the kernel Linux's entropy estimator. This prevents the /dev/random device from blocking and should benefit users of the preferred /dev/urandom and getrandom() interfaces too.

The CPU Jitter RNG itself is part of the kernel and claims to provide good entropy by collecting and magnifying differences in CPU execution time as measured by the high-resolution timer built into modern CPUs. It requires no additional hardware or external entropy source.

The random bit stream generated by jitterentropy-rngd is not processed by a cryptographically secure whitening function. Nonetheless, its authors believe it to be a suitable source of cryptographically secure key material or other cryptographically sensitive data.

If you agree with them, start this daemon as early as possible to provide properly seeded random numbers to services like SSH or those using TLS during early boot when entropy may be low, especially in virtualised environments.

PipeWire is a project that aims to greatly improve handling of audio and video under Linux. It aims to support the usecases currently handled by both PulseAudio and Jack and at the same time provide same level of powerful handling of Video input and output. It also introduces a security model that makes interacting with audio and video devices from containerized applications easy, with supporting Flatpak applications being the primary goal. Alongside Wayland and Flatpak we expect PipeWire to provide a core building block for the future of Linux application development.

A suite of tools for manipulating the metadata of the dm-thin, dm-cache and dm-era device-mapper targets.

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.

iptables is the user-space command line program used to configure the Linux 2.4.x and later IPv4 packet filtering ruleset (firewall), including NAT (Network Address Translation).

This package also includes ip6tables, which is used to configure the IPv6 packet filter.

Both commands are targeted at system administrators.

Procenv is a command-line tool that displays as much detail about itself and its environment as possible. It can be used as a test tool, to understand the type of environment a process runs in, and for comparing system environments.

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.

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.

This package provides a library called libpfm4, which is used to develop monitoring tools exploiting the performance monitoring events such as those provided by the Performance Monitoring Unit (PMU) of modern processors.

Libpfm4 helps convert from an event name, expressed as a string, to the event encoding that is either the raw event as documented by the hardware vendor or the OS-specific encoding. In the latter case, the library is able to prepare the OS-specific data structures needed by the kernel to setup the event.

libpfm4 provides support for the perf_events interface, which was introduced in Linux 2.6.31.

This package provides commands to create and check XFS file systems.

This tool turns ldd into a tree and explains how shared libraries are found or why they cannot be located.

The kernel Linux's frame buffers provide a simple interface to different kinds of graphic displays. The fbset utility can query and change various device settings such as depth, virtual resolution, and timing parameters.

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 includes the important tools for controlling the network subsystem of the Linux kernel. This includes arp, ifconfig, netstat, rarp and route. Additionally, this package contains utilities relating to particular network hardware types (plipconfig, slattach) and advanced aspects of IP configuration (iptunnel, ipmaddr).

Interception Tools provides a composable infrastructure on top of libudev and libevdev. The following utilities are provided:

• udevmon --- monitor input devices for launching tasks

• intercept --- redirect device input events to stdout

• uinput --- redirect device input events from stding to virtual device

• mux --- mux streams of input events

This package provides small event loop that wraps the epoll family of APIs.

RadeonTop monitors resource consumption on supported AMD Radeon Graphics Processing Units (GPUs), either in real time as bar graphs on a terminal or saved to a file for further processing. It measures both the activity of the GPU as a whole, which is also accurate during OpenCL computations, as well as separate component statistics that are only meaningful under OpenGL graphics workloads.

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

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.

The USB/IP protocol enables to pass USB device from a server to a client over the network. The server is a machine which shares an USB device and the client is a machine which uses USB device provided by a server over the network. The USB device may be either physical device connected to a server or software entity created on a server using USB gadget subsystem. The usbip-utils are userspace tools to used to handle connection and management on both side. The client needs the vhci-hcd Linux kernel module and the server needs the usbip_host Linux kernel module.

Headers of the Linux-Libre kernel.

Modprobed-db is a useful utility for users wishing to build a minimal kernel via a make localmodconfig. In a nutshell, this make target creates a config based on the current config and a list of modules you define (that modprobed-db keeps for you). It then disables any module option that is not needed thus not building extraneous modules. This results in a system-specific, streamlined kernel package and footprint as well as reduced compilation times.

Modprobed-db simply logs every module ever probed on the target system to a text-based database ($XDG_CONFIG_HOME/modprobed-db), which can be read directly by make localmodconfig as described above.

libnetfilter_queue is a userspace library providing an API to packets that have been queued by the kernel packet filter. It is is part of a system that deprecates the old ip_queue/libipq mechanism.

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.