Try this command: route add -net 224.0.0.0 netmask 240.0.0.0 dev eth0
Then: route -e
You will see like this:
[root@orasrv01 ~]# route -e
Kernel IP routing table
Destination Gateway Genmask Flags MSS Window irtt Iface
172.16.0.0 * 255.255.252.0 U 0 0 0 eth0
169.254.0.0 * 255.255.0.0 U 0 0 0 eth0
224.0.0.0 * 240.0.0.0 U 0 0 0 eth0

OK!

2、chmod 600 amazonec2key

3、ssh-keygen -p -f amazonec2key

4、ssh-keygen -e -f amazonec2key >> amazonec2key.pub

5、use amazonec2key.pub as secuCRT’s key file. Remember put the amazonec2key in the same location.

% ./configure –prefix=/usr/local/squid
% make all
% make install

To run a Cache, you will need to:

1. customize the squid.conf configuration file:
% vi /usr/local/squid/etc/squid.conf

2. start the cache:
% /usr/local/squid/sbin/squid

If you want to use the WWW interface to the Cache Manager, copy the cachemgr.cgi program into your httpd server’s cgi-bin directory.

You must restart the service to make it effective:
[root@localhost ~]# service iptables restart

The D command deletes from the cursor position to the end of the line. (D is a shortcut for d$.)

x

Often you want to delete only one or two characters. Just as r is a special change command to replace a single character, x is a special delete command to delete a single character. x deletes only the character the cursor is on.

dw deletes a word beginning where the cursor is positioned. Notice that the space following the word is deleted.

dd

The dd command deletes the entire line that the cursor is on. dd will not delete part of a line. Like its complement, cc, dd is a special command.

Changing the case of a letter is a special form of replacement. The tilde (~) command will change a lowercase letter to uppercase or an uppercase letter to lowercase. Position the cursor on the letter whose case you want to change, and type a ~. The case of the letter will change, and the cursor will move to the next character.

One other replacement edit is given by the r command. r replaces a single character with another single character. You do not have to press ESC to return to command mode after making the edit.

s

The S command, as is usually the case with uppercase commands, lets you change whole lines. In contrast to the C command, which changes the rest of the line from the current cursor position, the S command deletes the entire line, no matter where the cursor is. vi puts you in insert mode at the beginning of the line. A preceding count replaces that many lines.

Both s and S put you in insert mode; when you are finished entering new text, press ESC.

To change a word, combine the c (change) command with w for word. You can replace a word (cw) with a longer or shorter word (or any amount of text). cw can be thought of as “delete the word marked and insert new text until ESC is pressed.”

cc

To replace the entire current line, use the special change command, cc. cc changes an entire line, replacing that line with any amount of text entered before pressing ESC . It doesn’t matter where the cursor is located on the line; cc replaces the entire line of text.