When you click on the “Safely Remove Hardware” icon in the system tray to remove your USB thumbdrive, you may receive an error message saying that it is still in use and you may not be able to remove it successfully.

Changing the IP settings from the Windows GUI is a no-brainer! I have never been a fan of using the GUI for system configuration. I change the network settings of the ethernet and wifi interfaces from the command line!

'which' is a Unix command used to identify the location of executables by searching in the directories listed in the PATH environment variable.

Netcat is often known as the swiff army knife for TCP/IP. It’s features include but not limited to UDP/TCP port scanning, file transfers, tunneling of UDP over TCP, port forwarding and so on.

Have you ever come across the error message “The terminal server has exceeded the maximum number of allowed connections” while trying to login to a Windows machine as an administrator?

Are you bored with your typical screen saver? If yes, read on…

I have recently discovered a new Windows command line tool, called 'clip' that can be used to redirect the output of CLI tools to the Windows Clipboard.

The Registry Editor, or regedit.exe, allows the import and export of Windows registry entry files from the command line. It’s usage though, could prove to be a bit restrictive from the command line. From Windows XP edition onwards, Microsoft has included another command line tool called REG, or reg.exe. This tool is able perform almost all the tasks as it’s GUI counterpart – regedit.exe.

The default command line ftp client in most UNIX distributions do not support recursive downloads, even though recursive downloads is a basic feature in most GUI based ftp clients. But if you do not have access to the X-Windows or GUI, there are alternative ways to achieve the same result from the command line.

Multi-core CPUs pack multiple processors into a single chip thus allowing multiple threads to run at once. Most of the time, this is a good thing. But at times, for example, when you need to run some legacy applications that are not compatible with multi-core processing, you may be required to disable the cores.