January, 2010 - PowerCram Blog

tcping for Linux

tcping does a TCP connect to the given ip/port combination. The user can specify a timeout in seconds. This is useful in shell scripts running in firewalled environments. Often SYNs are just being dropped by firewalls, thus connection establishment will be retried several times (for minutes) until a TCP timeout is reached. With tcping it is possible to […]

Ping Over TCP with tcping.exe in Windows

tcping.exe (tcp ping) is a small console application that operates similarly to ‘ping’, however it works over a tcp port. Works with all versions of Windows – Windows 7, Windows Vista, Windows XP, Windows 2008, Windows 2003. Download tcping.exe. tcping example: C:>tcping powercram.com Probing 216.239.36.21:80/tcp – Port is open – time=26.241msProbing 216.239.36.21:80/tcp – Port is open – time=20.022msProbing 216.239.36.21:80/tcp […]

Capture Screenshot Image on iPhone (3G) and iPod Touch 2.0 Without Screen Shot Utility – HowTo

To  take a screenshot or capture the screen image in iPhone 2.0, iPhone 3G, and iPod Touch (2.0 and later), just press the Home button and Sleep/Wake button (On/Off button at the top of the mobile device) simultaneously. The Apple device screen will flash and an image will be automatically saved and stored in the iPhone or iPod Touch Camera Roll or photo […]

Multi-CPU Utilization Graphing in Cacti

The past couple days I’ve been installing and configuring a new version of Cacti (0.8.7c) from a CactiEZ v0.6 installation. I’ve been using Cacti for years now and love what it does, however I’ve found that tweaking it is sometimes problematic.  Since I may go several months or a year or more between tweaking my install I have to […]

Upgrade Cacti on CactiEZ Installation

After installing CactiEZ v0.6 (as a VM on Windows 2008 Hyper-V) which includes Cacti 0.8.7c I wanted to upgrade to the latest version of Cacti (0.8.7e as of this post). However I was not able to locate any good directions. Jimmy Conner who put together CactiEZ said to follow the directions for upgrading Cacti in the Cacti manual, but […]

Install CactiEZ on Windows 2008 Hyper-V

CactiEZ (Cacti Made Easy) is a self installing Linux Distribution based off CentOS that sets up and configures a customized Cacti install. Everything is designed to be completely automated and working directly out of the box. This compact distro is loaded with extra features such as Syslog and Netflow data collection, Weathermaps, Reports, Auto Discovery, Router Config backup, […]