How to change the 'hosts' file to redirect URLs? For windows machine we got the hosts file to edit to redirect url's to other domains. Is there a file like that on android?

I'm looking to redirect a very long url to a shorter one using the hosts file, is this possible? This can also be used to redirect a list of known spam domains to nothing so the worst flash/gif adds are removed.

I'm running Android 2.1 on a rooted samsung galaxy S
The original link is dead. I pulled this short guide from way back machine, copied here:


  With the first few official Pre-Alpha builds of CyanogenMod 7 being
  released, it’s worth noting that a new feature has been included that
  allows you to change the hostname on your device from the Settings
  menu. If you have a supported device, you can get the nightly builds
  from the TeamDouche Mirror System. Once you’ve flashed (I take no
  responsibility if you break something – make sure to read up on
  issues/pitfalls/requirements before flashing), open the Settings menu,
  then choose Applications, then Development, and select Device Hostname
  at the bottom. This setting persists between reboots and ROM upgrades
  (unless you wipe).
  
  Warning: I accept no responsibility if you brick your phone while
  doing this.
  
  I ditched my iPhone due to problems my local provider was having and
  got an HTC Dream instead. I promptly rooted it using the Cyanogen Mod,
  but noticed that by default, Android reports the hostname as
  ‘localhost’. I don’t really like this, so I set about finding an easy
  way to change it.
  
  First off, even rooted, the / partition is mounted read-only when you
  boot normally, so you need to boot to Recovery Mode (Home+Power). In
  the recovery menu, choose to boot to console. From there, browse to
  /system/etc/init.d.
  
  IMPORTANT: Make a backup of ’05userinit’ before continuing! You can do
  this by simply running the following command – ‘cp 05userinit
  /05userinit’ (without quotes). This will create a copy of it in the /
  directory. If you screw up your editing, you can just rm the messed up
  version and cp the backup back in.
  
  To add the command to set the host name, we’re simply going to echo in
  the following two lines:

echo  &gt;&gt; 05userinit

echo hostname NEWHOSTNAME &gt;&gt; 05userinit

  
  Note that there are two spaces after the first ‘echo’ command. This
  creates a blank line at the end of the file. The second echo adds the
  hostname command. This way, whenever your phone boots, the hostname is
  set. Also, be sure to use two greater-than signs (&gt;), as that
  appends – if you only use one, it overwrites the contents of the file.
  
  Make sure the edits are correct by typing ‘tail 05userinit’ – as long
  as it isn’t blank, and there’s more than just the hostname line,
  you’re golden. Reboot the phone by typing ‘reboot’ at the prompt and
  hitting ‘Enter’, and you’re done.
  
  Once you’ve booted back up, open up your terminal emulator of choice
  and type ‘hostname’ (by itself, no parameters) – it should echo out
  whatever hostname you specified.
  
  Update (April 6th, 2010): To change your hostname on Cyanogen 5.x, add
  the following line to the bottom of /system/etc/init.d/01sysctl — and
  make sure you make a backup of 01sysctl before editing it!

echo NEWHOSTNAME &gt; /proc/sys/kernel/hostname