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.

jtbl accepts piped JSON data from stdin and outputs a text table representation to stdout.

The Router Advertisement Daemon (radvd) is run on systems acting as IPv6 routers. It sends Router Advertisement messages specified by RFC 2461 periodically and when requested by a node sending a Router Solicitation message. These messages are required for IPv6 stateless autoconfiguration.

ISC's Dynamic Host Configuration Protocol (DHCP) distribution provides a reference implementation of all aspects of DHCP, through a suite of DHCP tools: server, client, and relay agent.

This software is end-of-life! ISC does not intend to issue any further maintenance releases.

Spindle is a tool for improving the performance of dynamic library and Python loading in HPC environments.

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

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.

The Fuck tries to match a rule for a previous, mistyped command, creates a new command using the matched rule, and runs it.

nnn is a fork of noice, a fast and minimal text terminal file browser with keyboard shortcuts for navigation, opening files and running tasks. There is no configuration file and MIME associations are hard-coded.

daemonize runs a command as a Unix daemon. It will close all open file descriptors, change working directory of the process to the root filesystem, reset its umask, run in the background, ignore I/O signals, handle SIGCHLD, etc. Most programs that are designed to be run as daemons do that work for themselves. However, you’ll occasionally run across one that does not. When you must run a daemon program that does not properly make itself into a true Unix daemon, you can use daemonize to force it to run as a true daemon.

vmtouch is a tool for learning about and controlling the file system cache of unix and unix-like systems.

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.

This package inherits pam-mount but is compiled specifically for use with the greetd log-in manager. It uses a different configuration location and PAM name space from the original.

This allows greetd-pam-mount to auto-(un)mount XDG_RUNTIME_DIR without interfering with any pam-mount configuration.

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.

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.

Ansible aims to be a radically simple IT automation system. It handles configuration management, application deployment, cloud provisioning, ad-hoc task execution, network automation, and multi-node orchestration. Ansible facilitates complex changes like zero-downtime rolling updates with load balancers. This package is the core of Ansible, which provides the following commands:

• ansible

• ansible-config

• ansible-connection

• ansible-console

• ansible-doc

• ansible-galaxy

• ansible-inventory

• ansible-playbook

• ansible-pull

• ansible-test

• ansible-vault

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

The Ansible roles provided by that can be used to manage Debian or Ubuntu hosts. In addition, a default set of Ansible playbooks can be used to apply the provided roles in a controlled way, using Ansible inventory groups.

The roles are written with a high customization in mind, which can be done using Ansible inventory. This way the role and playbook code can be shared between multiple environments, with different configuration in to each one.

Services can be managed on a single host, or spread between multiple hosts. DebOps provides support for different SQL and NoSQL databases, web servers, programming languages and specialized applications useful in a data center environment or in a cluster. The project can also be used to deploy virtualization environments using KVM/libvirt, Docker or LXC technologies to manage virtual machines and/or containers.

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.

sedsed can debug, indent, tokenize and HTMLize your sed script.

In debug mode, it reads your script and adds extra commands to it. When executed you can see the data flow between the commands, revealing all the magic sed performs on its internal buffers.

In indent mode, your script is reformatted with standard spacing.

In tokenize mode, you can see the elements of every command you use.

In HTMLize mode, your script is converted to a beautiful colored HTML file, with all the commands and parameters identified for your viewing pleasure.

With sedsed you can master any sed script. No more secrets, no more hidden buffers.

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.

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

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.

hostapd is a user-space daemon for WiFi access points and authentication servers. It implements IEEE 802.11 access point management, IEEE 802.1X/WPA/WPA2/EAP Authenticators, RADIUS client, EAP server, and RADIUS authentication server.

doctl provides a unified command line interface to the DigitalOcean API.