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I am using CentOS 5 on my laptop. If I open gnome-terminal by right clicking the desktop, I am getting an error that read as follows:

There was an error creating the child process for this terminal

How do I fix this problem and open a terminal by right clicking the Debian / Ubuntu / CentOS / Fedora / RHEL / Red hat Enterprise Linux 5.x desktop system?
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FreeBSD PPTP Client: Install and Create a VPN

I work form home, and I need to login into our corporate network using a pptp based vpn. How do I configure and setup up a PPTP VPN client under FreeBSD desktop / laptop or server operating systems?
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I need to find out the service tag of my Dell server or computer. How do I find out my nique five- to seven- digit alphanumeric (letter and number) service tag code without looking on the back of the system or opening door of bezel?
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Apple OS X Lock Desktop / Screen

I need to prevent others using my desktop or laptop while I'm away from it. How do I lock my Laptop (Macbook or Macbook pro) / desktop using Mac OS X operating systems without using 3rd party applications?
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I have installed FreeBSD 8.x on my Laptop with Windows 7 in dual boot mode. But I'm unable to connect to the LAN or Internet using Atheros AR8132 card. How do I configure this card under FreeBSD?
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How do I find out BIOS version using a Linux command line option?
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Linux Command: Show Linux Version

What command I need to type to display Linux kernel version and other information such as Linux distribution name? How do I check Linux kernel version number?
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