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GitHub - sevlyar/go-daemon: A library for writing system daemons in golang.


Saved by uncleflo on January 4th, 2019.

go-daemon Build Status GoDoc. Library for writing system daemons in Go. Now supported only UNIX-based OS (Windows is not supported). But the library was tested only on Linux and OSX, so that if you have an ability to test the library on other platforms, give me feedback, please (#26). Features: Goroutine-safe daemonization; Out of box work with pid-files; Easy handling of system signals; The control of a daemon.

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daemon/examples at master · takama/daemon · GitHub


Saved by uncleflo on January 4th, 2019.

Go Daemon: A daemon package for use with Go (golang) services with no dependencies.

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Linux Daemon Writing HOWTO


Saved by uncleflo on January 4th, 2019.

A daemon (or service) is a background process that is designed to run autonomously,with little or not user intervention. The Apache web server http daemon (httpd) is one such example of a daemon. It waits in the background listening on specific ports, and serves up pages or processes scripts, based on the type of request. Creating a daemon in Linux uses a specific set of rules in a given order. Knowing how they work will help you understand how daemons operate in userland Linux, but can operate with calls to the kernel also. In fact, a few daemons interface with kernel modules that work with hardware devices, such as external controller boards, printers,and PDAs. They are one of the fundamental building blocks in Linux that give it incredible flexibility and power. Throughout this HOWTO, a very simple daemon will be built in C. As we go along, more code will be added, showing the proper order of execution required to get a daemon up and running.

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users - How do daemons work? - Unix & Linux Stack Exchange


Saved by uncleflo on January 4th, 2019.

If a user wants to execute a command, he has to first log in into a system. But some users in the system have /bin/false or /sbin/nologin set as a default shell in the /etc/password file. If I change /bin/bash to /bin/false in case of my user, I won't be able to log in into the system, so I also won't be able to run commands. But the shellless users do it anyway: How can a user without a shell execute a command? In POSIX, every running process has three User IDs (UIDs) associated with it; the real UID, which identifies the user who launched the process, the effective UID, which is used to determine what resources the process can access, and the saved Set-User-ID (SUID), which is the effective UID the process had when it started (at the point of the last exec() call). Of these, the effective UID is the most significant, since it is the one used when determining access control decisions regarding the process.

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Bitcoin Developer Guide


Saved by uncleflo on January 24th, 2018.

Find detailed information about the Bitcoin protocol and related specifications. The Developer Guide aims to provide the information you need to understand Bitcoin and start building Bitcoin-based applications, but it is not a specification. To make the best use of this documentation, you may want to install the current version of Bitcoin Core, either from source or from a pre-compiled executable.

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Check listening ports with netstat


Saved by uncleflo on January 27th, 2017.

If you’re troubleshooting a service that you know is running normally the next step is to ensure it’s listening on the correct network port. The netstat command shows the services listening to ports on a Linux server and the details of any connections currently made to them. The connection details to consider during basic network daemon troubleshooting are the addresses that the daemon is listening on (including the port number), the daemon’s process identifier (PID), and the program name.

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SIPVicious - SIP auditing tools


Saved by uncleflo on February 16th, 2015.

I like to keep an eye on the social media and Google alerts for SIPVicious and in the last few months I noticed a rise in mentions of the tools. Specifically, a number of Korean twitter users (who have their service with KT, a VoIP service provider) complaining about receiving a call from a caller-id showing ‘SIPVicious’. After contacting a Korean friend, this led to an interview by a reporter for an article that was published on a Korean tech news site Boan News. The good news is that, according to the reporter, KT decided to release security update Nov. 7th for the vulnerable ip phones following the article.

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MTA Comparison - Granizada


Saved by uncleflo on September 26th, 2013.

For a lot of people the choice of the Mail Transfer Agent is important. A bad choice can mean lost time and money, lower reliability and increased risk to networks. A good choice can, depending on the architecture of your mail system, remain substantially unchanged for years. If you're designing a major mail system then you're also going to be asking yourself the question should I use more than one kind of MTA, and if so which should go where? Hopefully this article can help.

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Deluge Forum • View topic - Howto: Proxying deluge web client to Apache via mod_proxy


Saved by uncleflo on September 14th, 2013.

Deluges web client is the only client I use, but I wanted to access it via my own web server. This small Howto shows how I got it to work. This has only been tested with Apache 2.2 and Deluge 1.0.0.

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UserGuide/ThinClient – Deluge


Saved by uncleflo on September 5th, 2013.

Deluge can be setup in such a way that a Deluge daemon, deluged, can be setup on a central computer, server, which can then be accessed and controlled by other computers, clients, using one of Deluge's UIs.

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ConfigServer Security & Firewall


Saved by uncleflo on August 31st, 2013.

We have developed an SPI iptables firewall that is comprehensive, straight-forward, easy and flexible to configure To complement the ConfigServer Firewall (csf), we have developed a Login Failure Daemon (lfd) process that runs all the time and periodically (every X seconds) scans the latest log file entries for login attempts against your server that continually fail within a short period of time. Such attempts are often called "Brute-force attacks" and the daemon process responds very quickly to such patterns and blocks offending IP's quickly. Other similar products run every x minutes via cron and as such often miss break-in attempts until after they've finished, our daemon eliminates such long waits and makes it much more effective at performing its task.

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Install CSF/LFD Firewall on your Linux Server - Linux Brigade


Saved by uncleflo on August 31st, 2013.

The first thing on your mind when setting up a new Linux server (dedicated or VPS) is how you can increase security. One of the best tools in your bag of tricks should be the CSF (ConfigServer) LFD (Login Failure Daemon) firewall. CSF/LFD has their own script license, making it free of charge with no warranty or support. Before installing CSF, please disable other security applications such as denyhosts, fail2ban or cPanel’s cPHulk. Installation is a breeze and consists of the following commands:

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Saved by uncleflo on August 28th, 2013.

Deluge is a new BitTorrent client, created using Python and GTK+. It is intended to bring a native, full-featured client to Linux GTK+ desktop environments such as GNOME and XFCE. It supports features such as DHT (Distributed Hash Tables), PEX (µTorrent-compatible Peer Exchange), and UPnP (Universal Plug-n-Play) that allow one to more easily share BitTorrent data even from behind a router with virtually zero configuration of port-forwarding.

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Saved by uncleflo on August 27th, 2013.

A Unix daemon is a program that runs in the “background,” enabling you to do other work in the “foreground,” and is independent of control from a terminal. Daemons can either be started by a process, such as a system startup script, where there is no controlling terminal, or by a user at a terminal without “tying up” that terminal as the daemon runs. But which daemons can you safely play with? Which should you leave running?

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Bitcoind - Bitcoin


Saved by uncleflo on May 16th, 2013.

Bitcoind is a program that implements the Bitcoin protocol for command line and remote procedure call (RPC) use. It is also the first Bitcoin client in the network's history. It is available under the MIT license in 32-bit and 64-bit versions for Windows, GNU/Linux-based OSes, and Mac OS X. Prior to version 0.5, this service-provider client used a wxWidgets GUI as its default GUI. It is now instead bundled with Bitcoin-Qt.

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Ubuntu Linux Start / Restart / Stop Apache Web Server


Saved by uncleflo on May 7th, 2013.

How do I start, restart or stop Apache 2 web server under Ubuntu Linux operating systems? /etc/init.d/apache2 is service script used to start / stop / restart the Apache2 service under Debian or Ubuntu Linux. You need to login as root or use sudo command restart Apache.

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8 ways to share your git repository


Saved by uncleflo on January 5th, 2013.

A really good git sharing review website! Just Enough Developed Infrastructure. 8 ways to share your git repository. This blogpost provides a summary of different ways to share a git repository. Depending on your needs you can opt for different solutions.

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Crontab – Quick Reference | Admin's Choice


Saved by uncleflo on March 27th, 2012.

Setting up cron jobs in Unix and Solaris. cron is a unix, solaris utility that allows tasks to be automatically run in the background at regular intervals by the cron daemon. These tasks are often termed as cron jobs in unix , solaris. Crontab (CRON TABle) is a file which contains the schedule of cron entries to be run and at specified times. This document covers following aspects of Unix cron jobs

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