The bbswitch module provides a way to toggle the Nvidia graphics card on Optimus laptops.

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.

This simple Linux kernel module allows calls from user space to any ACPI method provided by your computer's firmware, by writing to /proc/acpi/call. You can pass any number of parameters of types ACPI_INTEGER, ACPI_STRING, and ACPI_BUFFER.

It grants direct and undocumented access to your hardware that may cause damage and should be used with caution, especially on untested models.

eCryptfs is a POSIX-compliant stacked cryptographic file system for Linux. Each file's cryptographic meta-data is stored inside the file itself, along with the encrypted contents. This allows individual encrypted files to be copied between hosts and still be decrypted with the proper key. eCryptfs is a native Linux file system, and has been part of the Linux kernel since version 2.6.19. This package contains the userland utilities to manage it.

PRoot is a user-space implementation of chroot, mount --bind, and binfmt_misc. This means that users don't need any privileges or setup to do things like using an arbitrary directory as the new root file system, making files accessible somewhere else in the file system hierarchy, or executing programs built for another CPU architecture transparently through QEMU user-mode. Also, developers can use PRoot as a generic process instrumentation engine thanks to its extension mechanism. Technically PRoot relies on ptrace, an unprivileged system-call available in the kernel 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.

ulogd is a userspace logging daemon for netfilter/iptables related logging. This includes per-packet logging of security violations, per-packet logging for accounting, per-flow logging and flexible user-defined accounting.

1. Packet and flow-based traffic accounting

2. Flexible user-defined traffic accounting via nfacct infrastructure

3. SQL database back-end support: SQLite3, PostgreSQL, MySQL

4. Text-based output formats: CSV, XML, Netfilter's LOG, Netfilter's conntrack

jmtpfs uses FUSE to provide access to data over MTP. Unprivileged users can mount the MTP device as a file system.

PRoot is a user-space implementation of chroot, mount --bind, and binfmt_misc. This means that users don't need any privileges or setup to do things like using an arbitrary directory as the new root file system, making files accessible somewhere else in the file system hierarchy, or executing programs built for another CPU architecture transparently through QEMU user-mode. Also, developers can use PRoot as a generic process instrumentation engine thanks to its extension mechanism. Technically PRoot relies on ptrace, an unprivileged system-call available in the kernel Linux.

The Falco security libraries include libsinsp and libscap. libscap manages the data capture process, while libsinsp is a system inspection library that enriches events from libscap with machine state. libsinsp also performs events filtering with rule evaluation through its internal rule engine. These libraries are used by the sysdig command-line utility.

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

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.

The libiec61883 library provides a higher level API for streaming DV, MPEG-2 and audio over Linux IEEE 1394.

Libraw1394 is the only supported interface to the kernel side raw1394 of the Linux IEEE-1394 subsystem, which provides direct access to the connected 1394 buses to user space. Through libraw1394/raw1394, applications can directly send to and receive from other nodes without requiring a kernel driver for the protocol in question.

The libseccomp library provides an easy to use, platform independent, interface to the Linux Kernel's syscall filtering mechanism. The libseccomp API is designed to abstract away the underlying BPF based syscall filter language and present a more conventional function-call based filtering interface that should be familiar to, and easily adopted by, application developers.

bpftool allows for inspection and simple modification of BPF objects on the system.

Collection of tools to query what type of USB devices are connected to the system, including lsusb. The experimental usbreset command included in the package, but be aware that it may not work for all devices.

snapscreenshot saves a screenshot of one or more Linux text consoles as a Targa (.tga) image. It can be used by anyone with read access to the relevant /dev/vcs* file(s).

The inih (INI Not Invented Here) library is a simple .INI file parser written in C. It's only a couple of pages of code, and it was designed to be small and simple, so it's good for embedded systems. It's also more or less compatible with Python's ConfigParser style of .INI files, including RFC 822-style multi-line syntax and name: value entries.

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.

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.

Iotop is a Python program with a top like user interface to show the processes currently causing I/O.

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