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What is the difference between Cc and Bcc?

What is the difference between Cc and Bcc?

Cc stands for carbon copy which means that whose address appears after the Cc: header would receive a copy of the message. Also, the Cc header would also appear inside the header of the received message.

Bcc stands for blind carbon copy which is similar to that of Cc except that the Email address of the recipients specified in this field do not appear in the received message header and the recipients in the To or Cc fields will not know that a copy sent to these address.

Source:http://email.cityu.edu.hk/faq/ccbcc.htm

web.xml Deployment Descriptor Elements

Source : http://edocs.bea.com/wls/docs61/webapp/web_xml.html

web.xml Deployment Descriptor Elements

This following sections describe the deployment descriptor elements defined in the web.xml file. The root element for web.xml is . The following elements are defined within the element:

• icon Element

• display-name Element
• description Element
• distributable Element
• context-param Element

• filter Element

• filter-mapping Element

• listener Element

• servlet Element

• servlet-mapping Element

• session-config Element

• mime-mapping Element

• welcome-file-list Element

• error-page Element

• taglib Element

• resource-ref Element

• security-constraint Element

• login-config Element

• security-role Element

• env-entry Element

• ejb-ref Element

Tnsnames.ora

Source: http://www.expertsharing.com/2008/06/21/ora-12154-tnscould-not-resolve-service-name/

Increase Swap Memory in Linux

Source:http://salomie.ro/wiki/index.php/Linux_Free_Command

Linux Free Command
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The Linux Free Command
[edit]
Getting started

The linux free command allows us to check free/used memory on the system The output below is the result of running free -m on my system (-m means output is in MB):

total used free shared buffers cached
Mem: 3856 1121 2735 0 17 180
-/+ buffers/cache: 923 2933
Swap: 2533 1044 1489

[edit]
Output explained

The first line starting with Mem: gives us the following information:

* total - is the total avaialble RAM (== Physical Memory) after subtracting the amount used by the kernel! In my case I have 4GB RAM and the total displays less than this.
* used - is the part of the RAM that currently has information in it that can be of use to the system (remember: unused RAM is useless, try to maximise this value)
* free - is just total-used
* shared - is the amount of memory shared between processes
* buffers and cached - the cached data and buffers for IO

The second line starting with -/+ buffers/cache: tells us how much of the memory in the buffers/cache is used by the applications and how much is free. Keep in mind that in general the cache is filled with disk IO cached data. The cache can be very easily reclaimed by the OS for applications. Let BUFFERS + CACHED from first line be value X.

X subtracted from the USED memory from the first line gives how much RAM is used by applications (USED value on second line)

X added to the FREE memory on the first line gives how much RAM applications can still request from the OS.

While the first line handles the values of currently used RAM, including applications and caches (but excluding kernel), the second line gives info on application related memory: how much is currently in use and how much is there still available for the applications.