Tech Articles

How to Extract Multiple .7z Files Using the Command Line

How to find the IP address of the email sender in Gmail, Yahoo mail, Hotmail, AOL, Outlook Express.

MySQL commands for the client command line

Change the server date and time in CentOS

This is how to check if your Yahoo! Mail has been compromised or hacked. You can see the history of the last 20 login attempts

How to patch the glibc vulnerability CVE-2015-7547 in CentOS, Ubuntu and Debian

Article about installing Ruby from source and Rails for Mac OS, Debian and CentOS.

How to fix the shellshock bash bug vulnerability in bash shell

Guide on how to install Windows 7 on VirtualBox virtual machine.

Watch Starwars on the Terminal. Using Mac Terminal, PuTTY or any Linux/Unix console.

Comprehensive list of dimensions of photos and images in Facebook, Twitter, Google+, LinkedIn and major social media websites.

How to get boot menu to show DVD and USB devices in Samsung Series 3 laptops

Basic tutorial on reseting your Verizon FiOS router password to the default one.

How to force Comcast IP address to change when using a Linksys router

Resources to complain to if scammed on the Internet. List of phone numbers, URLs and addresses of law enforcement agencies.

How to hack the Linksys WRT54G or WRT54GL Wireless-G router and install DD-WRT firmware.

How to compress webpages using gzip or deflate. Apache, Nginx, Lighttpd web servers.

How to save a document DOC, PUB, webpage, etc as PDF. .

How to handle X11 Forwarding using SSH and Xming.

How to get domain hosting and set up your own web site.

Using and editing .htaccess file for configurations. .

How to send SMS through email. This works only in the United States, but will be extended to other countries soon.

How to get more out of your Sony Ericsson T610 cell phone: unlocking, tricks, shortcuts, IMEA code.

Summary of essential emacs commands. Useful for beginners and regular users.

Tutorial on installing Raspbian Jessie on Raspberry Pi Zero W. This also works for other Raspberry Pi versions.

Different ways of parsing web server logs. Finding unique IP addresses of visitors.

This is an article how to access guest (CentOS) webserver from the host (Mac OS X) using NAT and Host-Only networks.

This tutorial shows you How to create an SSH connection without a password. Useful for ssh, scp and cron jobs that require password-less logins.

HISTORY shell variable management in Unix/Linux.

How to rename multiple files in Unix or Linux from the prompt.

How to play Prince of Persia and other games on Ubuntu Linux using DOSBox.

Installing Ubuntu Linux in VirtualBox. Linux guest on Windows host.

How to schedule tasks with cron.

Quick reference commands to using tar, gzip and bzip2. Archive and uncompress tar, tar.gz and tar.bz2 files.

Unix find command with examples and common usage.

Some frequently used Solaris commands. Useful for System Administrators.

This is a tutorial on how to remove the Control-M character ^M at the end of line. This usually happens when you save the file in Windows.

How to use GET and HEAD commands on the command line.

Some useful apt-get commands and resources.

Install Ubuntu 7.10 version 1.0 on your Sony PSP.

Installing X Window and Window Manager on Debian. Xorg.

Installing a webcam and setting up a live webcam site in Debian GNU/Linux.

My Linux box settings are listed here, they include configuration files tcshrc, xmodmap, grub.conf, init.d files.

How to upgrade file system in Linux, How to install Debian Linux on your computer.

Multimedia, Infrared, Bluetooth in Debian GNU/Linux.

File transfer programs to use in Linux or Unix.

Installing the networking in Debian Linux. .

Installing Applications and Servers in Debian Linux.

Upgrading the kernel to 2.6.16.x in Debian Linux.

How to dual boot Windows XP with Linux. How to remove Grub and LILO.

Changing boot sequence between Windows and Linux.

How to install Debian GNU/Linux on your computer.

Some important and useful commands I learnt while installing Linux.

Nginx does not run with SELinux enabled. I had to disable it to allow the nginx process to run.

How to generate self-signed SSL certificate in one command. This generates ssl certificate and key.

How to forward Perl (.pl) requests in Nginx web server to Apache mod_cgi.

HOWTO: Nginx to forward PHP requests to Apache mod_php.

How to configure Nginx to include PHP FastCGI support.

Configuring Nginx web server. nginx.conf tweaks.

Installing Nginx web server for Debian/Ubuntu/RedHat Linux.

How do I disable the Photos app from automatically opening when my iPhone or iPad is connected to the Mac.

How do I disable the Image Capture app from automatically opening when my iPhone or iPad is connected to the Mac.

Short tutorial on how to find the unique device identifier (UDID) of your iOS device - iPhone, iPod Touch or iPad

Mac Terminal shortcut to jump from word to word

Tutorial to reset the admin password on Mac OS X (Leopard or Snow Leopard).

How to insert a CD/DVD into a troublesome superdrive in your MacBook

Convert docx to doc in Mac OS X Snow Leopard or Leopard

How to eject CD/DVD from your MacBook or iMac. drutils, diskutil, drag-drop to trash can

How to detect if the visitor is using an iPad. Programming in PHP, Perl and JavaScript. Server configuration for nginx, apache, lighttpd. .

Important and useful Chat URLs for iPhone and iPod Touch users. .

(128)Network is unreachable: connect to listener. Apache error.

How to test for SSL version.

How to embed CGI files and other files in HTML files using SSI includes.

Rescue your important files if Windows is corrupted. Burn to CD or transfer to a remote location using System Rescue CD, Scp,Xfburn,gparted.

This page contains Windows hacks and many tips on how to do things that are traditionally not displayed in the usual options in Windows.

How to uninstall the Microsoft Java Virtual Machine (JVM).