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October 01 2011

moreutils

combine: combine the lines in two files using boolean operations ifdata: get network interface info without parsing ifconfig output ifne: run a program if the standard input is not empty isutf8: check if a file or standard input is utf-8 lckdo: execute a program with a lock held mispipe: pipe two commands, returning the exit status of the first parallel: run multiple jobs at once pee: tee standard input to pipes sponge: soak up standard input and write to a file ts: timestamp standard input vidir: edit a directory in your text editor vipe: insert a text editor into a pipe zrun: automatically uncompress arguments to command

moreutils

combine: combine the lines in two files using boolean operations ifdata: get network interface info without parsing ifconfig output ifne: run a program if the standard input is not empty isutf8: check if a file or standard input is utf-8 lckdo: execute a program with a lock held mispipe: pipe two commands, returning the exit status of the first parallel: run multiple jobs at once pee: tee standard input to pipes sponge: soak up standard input and write to a file ts: timestamp standard input vidir: edit a directory in your text editor vipe: insert a text editor into a pipe zrun: automatically uncompress arguments to command

moreutils

combine: combine the lines in two files using boolean operations ifdata: get network interface info without parsing ifconfig output ifne: run a program if the standard input is not empty isutf8: check if a file or standard input is utf-8 lckdo: execute a program with a lock held mispipe: pipe two commands, returning the exit status of the first parallel: run multiple jobs at once pee: tee standard input to pipes sponge: soak up standard input and write to a file ts: timestamp standard input vidir: edit a directory in your text editor vipe: insert a text editor into a pipe zrun: automatically uncompress arguments to command

September 14 2011

intrace - intrace - Traceroute-like application piggybacking on existing TCP connections - Google Project Hosting

InTrace is a traceroute-like application that enables users to enumerate IP hops exploiting existing TCP connections, both initiated from local network (local system) or from remote hosts. It could be useful for network reconnaissance and firewall bypassing.

September 09 2011

August 17 2011

July 25 2011

July 20 2011

How to kill a TCP connection using netstat

You cannot kill a TCP connection using netstat utility. netstat is use for

Display network connections
Routing tables
Interface statistics
Masquerade connections
Multicast memberships
And much more

However Linux support two other commands or utility that can be used to kill a TCP connection.

May 10 2011

Overview — HATop: Interactive ncurses client for HAProxy

HATop is an interactive ncurses client and real-time monitoring,
statistics displaying tool for the HAProxy TCP/HTTP load balancer.

May 06 2011

GoldenEggs x86-64 Servers

This Visual Configuration site is intended for all x86 server users, World wide.

February 25 2011

Home - PHP-FPM

PHP-FPM (FastCGI Process Manager) is an alternative PHP FastCGI implementation with some additional features useful for sites of any size, especially busier sites.

These features include:

Adaptive process spawning (NEW!)
Basic statistics (ala Apache's mod_status) (NEW!)
Advanced process management with graceful stop/start
Ability to start workers with different uid/gid/chroot/environment and different php.ini (replaces safe_mode)
Stdout & stderr logging
Emergency restart in case of accidental opcode cache destruction
Accelerated upload support
Support for a "slowlog"
Enhancements to FastCGI, such as fastcgi_finish_request() - a special function to finish request & flush all data while continuing to do something time-consuming (video converting, stats processing, etc.)

December 09 2010

The Monkeysphere Project

The Monkeysphere project's goal is to extend OpenPGP's web of trust to new areas of the Internet to help us securely identify servers we connect to, as well as each other while we work online. The suite of Monkeysphere utilities provides a framework to transparently leverage the web of trust for authentication of TLS/SSL communications through the normal use of tools you are familiar with, such as your web browser0 or secure shell.

October 28 2010

ZFS Cheatsheet · Col's Tech

The three primary goals of ZFS are:

1. Highly scalable (128-bit) data repository
2. Ease of administration
3. Guaranteed on disk data integrity

October 26 2010

September 29 2010

jcole’s weblog: Jeremy Cole’s take on life. » Blog Archive » The MySQL “swap insanity” problem and the effects of the NUMA architecture

When running MySQL on a large system (e.g., 64GB RAM and dual quad core CPUs) with a large InnoDB buffer pool (e.g., 48GB), over time, Linux decides to swap out potentially large amounts of memory, despite appearing1 to be under no real memory pressure. Monitoring reveals that at no time is the system in actual need of more memory than it has available; and memory isn’t leaking, mysqld‘s RSS is normal and stable.

Normally a tiny bit of swap usage could be OK (we’re really concerned about activity—swaps in and out), but in many cases, “real” useful memory is being swapped: primarily parts of InnoDB’s buffer pool. When it’s needed once again, a big performance hit is taken to swap it back in, causing random delays in random queries. This can cause overall unpredictable performance on production systems, and often once swapping starts, the system may enter a performance death-spiral.

September 09 2010

Filenames in Shell

This little essay explains how to correctly process filenames in Bourne shells. I presume that you already know how to write Bourne shell scripts.

August 23 2010

Thoughts about this DIY-Thumper and storage in general - c0t0d0s0.org

But there is another misunderstanding: There is no unimportant data, data is important or it's outdated, but then it was important at a certain point of time. When it isn't or wasn't important you wouldn't have stored it on disk. You can't classify data in important or unimportant. But you seperate in different classes of needed availability. There is data which you need it at high speed at any time and there is data that you need with a low frequency and it's sufficient to have it after minutes, hours, days.

May 08 2010

Main Page - mRemote

mRemote is a full-featured, multi-tab remote connections manager.

It allows you to store all your remote connections in a simple yet powerful interface.

Currently these protocols are supported:

* RDP (Remote Desktop)
* VNC (Virtual Network Computing)
* ICA (Independent Computing Architecture)
* SSH (Secure Shell)
* Telnet (TELecommunication NETwork)
* HTTP/S (Hypertext Transfer Protocol)
* Rlogin (Rlogin)
* RAW

January 05 2010

isolate - Project Hosting on Google Code

The Problem All your Unix applications run with the full authority of the account that launched them: your browser can read your SSH private key, your mail reader can mine your browser history, your image converter can delete all your email, and so on. So it is not safe to listen to songs from untrustworthy sources: a maliciously-crafted MP3 could crack your music program and use its authority to send your SSH key to a maniac with an evil mustache. What's an "untrustworthy source"? The Internet would be one example... The Solution This utility, isolate, runs processes in a chroot-ed environment, with constrained resource limits, as a random UID, and with limited access to the X server. An isolated program ("isolatee") no longer has all the authority of your user account, but you can still enjoy its legitimate functionality. You can play even maliciously-crafted songs in an unsafely implemented music player, with greatly minimized risk to your other data.
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