pathping is an interesting command that’s unique to Windows. It’s sort of a cross between the ping command and the tracert command, combining the features of both into one tool. When you run pathping, it first traces the route to the destination address much the way tracert does. Then, it launches into a 25-second test [...]
The hostname command is the simplest of all the TCP/IP. It simply displays the computer’s host name. For example: C:\>hostname doug C:\> Here, the host name for the computer is doug. The Windows version of the hostname command has no parameters. However, the Unix/Linux versions of hostname let you set the computer’s host name as [...]
Using the arp command allows you to display and modify the Address Resolution Protocol (ARP) cache. An ARP cache is a simple mapping of IP addresses to MAC addresses. Each time a computer’s TCP/IP stack uses ARP to determine the Media Access Control (MAC) address for an IP address, it records the mapping in the [...]
GNU is a recursive acronym that stands for GNU’s Not UNIX. The GNU Project was launched in 1984 by Richard Stallman to develop a complete UNIX-like operating system. The GNU Project developed nearly everything needed for a complete operating system except for the operating system kernel. All GNU software was distributed under the GNU General [...]
We’ll guide you through using PHP safe_mode and how-to enable it and to customize it for certain sites on your server. When using PHP as an Apache module, you can also change the configuration settings using directives in Apache configuration files (e.g. httpd.conf) and .htaccess files. PHP safe_mode is very important to in terms of [...]
Your system path is a list of directories that are searched by the shell when it looks for files. You don’t have to specify the location of any files that are in the system path because it will always be searched. Sometimes you might want to add additional directories to the search path. You can [...]
If an outgoing packet is not destined for a local subnet (that is taken from the IP address and subnet mark confgured on network interfaces), the packet will be forwarded to a default router (gateway) for further routing decision making and delivery.The default gateway address should be installed in the host’s routing table. This can [...]