I-K
ICMP (Internet Control Message Protocol)
A protocol for sending error/control messages. Associated with the ping command.
ifconfig
The ifconfig command is used to configure and display network devices.
init
The init process is the first Linux process called by the kernel. This process starts other processes that compose a working Linux system, including the shell.
Internet Print Protocol (IPP)
The Internet Print Protocol (IPP) is the evolving standard for printers shared over networks. It's being adapted by all major operating systems; the Linux implementation is CUPS.
IP forwarding
IP forwarding is where data is forwarded between computers or networks through your computer.
iptables
The iptables command is the basic command for firewalls and masquerading.
KDE
A GUI for Linux and Unix computers. Also known as the K Desktop Environment.
kernel
The kernel is the heart of any operating system. It loads device drivers. You can recompile a Linux kernel for additional drivers, for faster loading, and to minimize the required memory.
kernel module
Kernel modules are pluggable drivers that can be loaded and unloaded into the kernel as needed. Some loaded kernel modules are shown with the lsmod command.
Kickstart
Kickstart is the Red Hat automated installation system, which allows you to supply the answers required during the installation process. When properly configured, a kickstart floppy can allow you to start your computer and install RHEL 3 automatically from a network source.