stress-ng stress-tests a computer system by exercising both physical subsystems as operating system kernel interfaces. It can stress the CPU, cache, disk, memory, socket and pipe I/O, scheduling, and much more, in various selectable ways. This can trip hardware issues such as thermal overruns as well as operating system bugs that occur only when a system is being thrashed hard.

You can also measure test throughput rates, which can be useful to observe performance changes across different operating system releases or types of hardware. However, stress-ng is not a benchmark. Use it with caution: some of the tests can make poorly designed hardware run dangerously hot or make the whole system lock up.

Compared to its inspiration, stress, stress-ng offers many additional options such as the number of bogo operations to run, execution metrics, verification of memory and computational operations, and considerably more stress mechanisms.

Netcat is a featured networking utility which reads and writes data across network connections, using the TCP/IP 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.

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.

Inxi is a system information script that can display various things about your hardware and software to users in an IRC chatroom or support forum. It runs with the /exec command in most IRC clients.

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.

Show graphs for 1 minute, 5 minute, 15 minute load averages on the console.

Rdfind is a command line tool that finds duplicate files based on their content instead of their file names. It is useful for compressing backup directories or just finding duplicate files.

Small console getty that is started on the Linux text console, asks for a login name and then transfers over to login. It is extended to allow automatic login and starting any app.

This package provides a Perl interface (Perl::Rename) as well as a command-line utility (rename) that can rename multiple files at once based on a Perl regular expression.

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.

This package provides an implementation of the MAC-Telnet protocol used by RouterOS devices. It provides the following commands:

macping

Ping RouterOS devices or mactelnetd hosts.

mactelnetd

MAC-Telnet daemon.

mactelnet

MAC-Telnet client.

mndp

Discover other RouterOS devices or mactelnetd hosts.

This package provides an on demand system DBus service. It allows callers to configure network authentication and domain membership in a standard way. Realmd discovers information about the domain or realm automatically and does not require complicated configuration in order to join a domain or realm. Dbus system service that manages discovery and enrollment in realms/domains like Active Directory or IPA.

MASSCAN is an asynchronous TCP port scanner. It can detect open ports, and also complete the TCP connection and interact with the remote application, collecting the information received.

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.

nq can create very lightweight job queue systems which require no setup, maintenance, supervision, or any long-running processes.

Resource monitor that shows usage and stats for processor, memory, disks, network and processes. It's a Python port and continuation of bashtop.

Dstat is a versatile replacement for vmstat, iostat, netstat, and ifstat. Dstat overcomes some of their limitations and adds some extra features, more counters and flexibility. Dstat is handy for monitoring systems during performance tuning tests, benchmarks or troubleshooting.

Dstat allows you to view all of your system resources in real-time, you can, e.g., compare disk utilization in combination with interrupts from your IDE controller, or compare the network bandwidth numbers directly with the disk throughput (in the same interval).

Fasd (pronounced similar to "fast") is a command-line productivity booster. Fasd offers quick access to files and directories for POSIX shells. It is inspired by tools like autojump, z, and v. Fasd keeps track of files and directories you have accessed so that you can quickly reference them in the command line.

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.

Provides a DHCP and a DHCPv6 client. Additionally, dhcpcd is also an IPv4LL (aka ZeroConf) client. In layperson's terms, dhcpcd runs on your machine and silently configures your computer to work on the attached networks without trouble and mostly without configuration.

Sudo (su "do") allows a system administrator to delegate authority to give certain users (or groups of users) the ability to run some (or all) commands as root or another user while providing an audit trail of the commands and their arguments.

Bfs is a variant of the UNIX find command that operates breadth-first rather than depth-first. It is otherwise compatible with many versions of find, including POSIX, GNU, and *BSD find.

Utility to convert lsof output to a graph showing FIFO and UNIX interprocess communication.

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.