Hi Jason,
Adding to Bill's good example, I usually develop on my local machine ("liberty"), having a local webserver on the same machine setup. This way I can test stuff locally without ever moving it to the 'production' server ("brie"), or before checking it in to CVS. Of course my real webserver (brie) on my internal network is provisioned with a static IP address of 192.168.1.100, making host entries straightforward. But, my local workstation and others use Dynamic Host Control Protocol (DHCP) to get a dynamic IP address from my Linksys router every time I reboot those machines. Thus, I do not know my own IP. Since the /etc/hosts file supports aliases for each IP address, and the local loopback IP is always 127.0.0.1, I can add multiple aliases to that address so that my local machine knows where to send requests to those local sites.
[EMAIL PROTECTED]:~$ cat /etc/hosts
(long lines may be wrapped)
# syntax # IP_Address hostname alias(es) 127.0.0.1 localhost liberty.rundlett.com liberty liberty.freephile.com liberty.drstephaniehancox.com liberty.harbor-lights.com 192.168.1.100 brie.freephile.com # brie has a static IP # the following lines are commented b/c they will eventually fail using DHCP on liberty # 192.168.1.102 liberty.freephile.com # 192.168.1.102 liberty.drstephaniehancox.com
# The following lines are desirable for IPv6 capable hosts # (added automatically by netbase upgrade)
::1 ip6-localhost ip6-loopback fe00::0 ip6-localnet ff00::0 ip6-mcastprefix ff02::1 ip6-allnodes ff02::2 ip6-allrouters ff02::3 ip6-allhosts
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