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Tracert is a route tracing utility that display a list of near-side router interfaces of the routers along the path between a source host and a destination. Tracert uses the IP TTL field in ICMP Echo Requests and ICMP Time Exceeded messages to determine the path from a source to a destination through an IP internetwork. Note that some routers silently drop packets with expired TTLs. These routers do not appear in the Tracert display. How Tracert Works
A chroot on Unix operating systems is an operation that changes the apparent root directory for the current running process and its children. A program that is run in such a modified environment cannot name files outside the designated directory tree. The term chroot may refer to the chroot system call or the chroot wrapper program. The modified environment is called a chroot jail.