Netcat is a simple Unix utility which reads and writes data across network connections using TCP or UDP protocol. It is designed to be a reliable "back-end" tool that can be used directly or easily driven by other programs and scripts. At the same time it is a feature-rich network debugging and exploration tool, since it can create almost any kind of connection you would need and has several interesting built-in capabilities.

This package contains the OpenBSD rewrite of netcat, including support for IPv6, proxies, and Unix sockets.

wlgreet provides a greetd greeter that runs on a Wayland compositor such as sway. It is implemented with pure Wayland APIs, so it does not depend on a GUI toolkit.

Dmidecode reports information about your system's hardware as described in your system BIOS according to the SMBIOS/DMI standard. This typically includes system manufacturer, model name, serial number, BIOS version, asset tag as well as a lot of other details of varying level of interest and reliability depending on the manufacturer. This will often include usage status for the CPU sockets, expansion slots (e.g. AGP, PCI, ISA) and memory module slots, and the list of I/O ports (e.g. serial, parallel, USB).

This package provides programs that transfer files using the XMODEM/YMODEM/ZMODEM file transfer protocols.

GTK-based greeter for greetd, to be run under a compositor such as Cage.

Pam-mount is a PAM module to mount volumes when a user logs in. It can mount all local file systems supported by mount, as well as LUKS volumes encrypted with the user's log-in password.

greetd is a minimal and flexible login manager daemon that makes no assumptions about what you want to launch.

If you can run it from your shell in a TTY, greetd can start it.

If it can be taught to speak a simple JSON-based IPC protocol, then it can be a greeter.

This package provides a program that collects various performance measurement data like CPU, memory, disk and network performance numbers.

Simple script to suspend or hibernate your computer. It supports hooks before and after suspending.

The GNU Shepherd is a daemon-managing daemon, meaning that it supervises the execution of system services, replacing similar functionality found in typical init systems. It provides dependency-handling through a convenient interface and is based on GNU Guile.

GNU Alive sends periodic pings to a server, generally to keep a connection alive.

This package provides a universal seat management library that allows applications to use whatever seat management is available.

pam-hooks is a tiny PAM module enabling the execution of hook scripts when a PAM session is opened or closed. The typical use case is the need of doing some per-user set-up when a user logs via a PAM-aware login mechanism and/or the need of doing some per-user clean-up when the user logs out.

The libcap-ng library is intended to make programming with POSIX capabilities easier than the traditional libcap library. It includes utilities that can analyse all currently running applications and print out any capabilities and whether or not it has an open ended bounding set. The included utilities are designed to let admins and developers spot apps from various ways that may be running with too much privilege.

Fail2Ban scans log files like /var/log/auth.log and bans IP addresses conducting too many failed login attempts. It does this by updating system firewall rules to reject new connections from those IP addresses, for a configurable amount of time. Fail2Ban comes out-of-the-box ready to read many standard log files, such as those for sshd and Apache, and is easily configured to read any log file of your choosing, for any error you wish.

Though Fail2Ban is able to reduce the rate of incorrect authentication attempts, it cannot eliminate the risk presented by weak authentication. Set up services to use only two factor, or public/private authentication mechanisms if you really want to protect services.

lr is a tool for generating file listings, which includes the best features of ls(1), find(1), stat(1) and du(1).

Jnettop is a traffic visualiser, which captures traffic going through the host it is running from and displays streams sorted by bandwidth they use.

Atop is an ASCII full-screen performance monitor for Linux that is capable of reporting the activity of all processes (even processes have finished during the monitoring interval), daily logging of system and process activity for long-term analysis, highlighting overloaded system resources by using colors, etc. At regular intervals, it shows system-level activity related to the CPU, memory, swap, disks (including LVM) and network layers, and for every process (and thread) it shows e.g. the CPU utilization, memory growth, disk utilization, priority, username, state, and exit code.

di is a disk information utility, displaying everything that your df command does and more. It features the ability to display your disk usage in whatever format you prefer. It is designed to be highly portable and produce uniform output across heterogeneous networks.

This package contains a set of utilities for cloud computing environments:

• cloud-localds Create a disk for cloud-init to utilize nocloud

• cloud-publish-image Wrapper for cloud image publishing

• cloud-publish-tarball Wrapper for publishing cloud tarballs

• cloud-publish-ubuntu Import a Ubuntu cloud image

• ec2metadata Query and display EC2 metadata

• growpart Grow a partition to fill the device

• mount-image-callback Mount a file and run a command

• resize-part-image Resize a partition image to a new size

• ubuntu-cloudimg-query Get the latest Ubuntu AMI

• ubuntu-ec2-run Run a EC2 instance using Ubuntu

• vcs-run Obtain a repository, and run a command

• write-mime-multipart Handle multipart MIME messages

AIDE (Advanced Intrusion Detection Environment) is a file and directory integrity checker. It creates a database from the regular expression rules that it finds from its configuration files. Once this database is initialized it can be used to verify the integrity of the files. It has several message digest algorithms that are used to check the integrity of files. All of the usual file attributes can be checked for inconsistencies.

This package provides a way to figure out which processes communicate with which other processes. It provides more usable versions of ps, top and pstree.

This package provides the /etc/services, /etc/protocols, and /etc/rpc files, which contain information about the IANA-assigned port, protocol, and ONC RPC numbers.

GNU Radius is a server for remote user authentication and accounting. It is generally useful for networks that require a centralized authentication and accounting services for its workstations. Authentication can be performed in a variety of ways, such as via /etc/passwd or credentials stored in an SQL database.