Content Management Systems (CMS)

A content management system (CMS) is computer software used to create, edit, manage, and publish content in a consistently organized fashion. CMSs are frequently used for storing, controlling, versioning, and publishing industry-specific documentation such as news articles, operators' manuals, technical manuals, sales guides, and marketing brochures. The content managed may include computer files, image media, audio files, electronic documents, and Web content.


Web content management system

A Web content management system is a CMS designed to simplify the publication of Web content to Web sites, in particular allowing content creators to submit content without requiring technical knowledge of HTML or the uploading of files.

Details of few CMSs

1. Joomla!

Joomla is a free, open source content management system for publishing content on the world wide web and intranets. The system includes features such as page caching to improve performance, RSS feeds, printable versions of pages, news flashes, blogs, polls, website searching, and language internationalization. Joomla is licensed under the GPL, and is the result of a fork of Mambo.

It is written in the PHP programming language and uses the MySQL database by default.

2.Plone (software)

Plone is a free and open source content management system built on top of the Zope application server. It is suited for an internal website or may be used as a server on the Internet, playing such roles as a document publishing system and groupware collaboration tool.

Plone is released under the GNU General Public License (GPL) and is designed to be extensible. Major development is conducted periodically during special meetings called Plone Sprints. Additional functionality is added to Plone with Products, which may be distributed through the Plone website or otherwise. The Plone Foundation owns and protects all copyrights and trademarks. Plone also has legal backing from the council of the Software Freedom Law Center.





Refer for more :

CMS
List of CMS
Joomla!
Plone

Commands from Remote Shell: rsh

The remote shell command rsh allows you to execute a command on a remote machine without actually logging onto that machine. The command rsh uses the same .rhosts file as does rlogin, yet while rlogin will prompt you for a password if it has trouble with the .rhost file, both rsh and rcp require a properly functioning .rhosts file. If the .rhosts files is not properly configured, these commands will issue an error message and quit.

leo$ rsh user@server command

example :

leo$ rsh user@server df -h

How to mount a USB flash drive in GNU/Linux

Ubuntu "Hardy" detects Sony Ericsson Mobile but not auto mounts it's 1 GB card, might be the only case with my Linux Box. Because previously it use to auto mount.

Following command list USB devices that are detected by system.

# lsusb ( list USB devices )
Bus 002 Device 007: ID 0457:0151
Bus 002 Device 002: ID 8086:1120 Sony Ericsson ...........blah blah
Bus 002 Device 001: ID 0000:0000
Bus 001 Device 001: ID 0000:0000



# fdisk -l

which ( FDISK ) will list all the devices including the USB devices detected by GNU/Linux. Then you can use the mount command to mount it at a specific location.

MRTG - The Multi Router Traffic Grapher

MRTG applications is useful to monitor network and as well as servers utilizations( like CPU, Memory, Disk etc) by seeing MRTG graphs.

MIB MRTG refers to MIB ( Residing in memory, MIBs are data structures that are constantly updated via the SNMP daemon ) counter values as counter values.

Dependencies of MRTG
____________________

* SNMP
* HTTP

Configuring Simple SNMP on a Linux Server


1) Save the old configuration file

[root@leo]# cd /etc/snmp/
[root@leo]# mv snmpd.conf snmpd.conf.old
[root@leo]# vi snmpd.conf


2) Enter the following line in the new configuration file to set the Read Only community string to secrect123.

###snmpd.conf file ########

rocommunity secrect123

## sec.name source community
## ======== ====== =========
com2sec local localhost secrect123
com2sec network_1 10.16.1.0/24 secrect123
com2sec network_2 10.16.2.0/24 secrect123

## Access.group.name sec.model sec.name
## ================= ========= ========
group MyROGroup_1 v1 local
group MyROGroup_1 v1 network_1
group MyROGroup_2 v2c network_2

## MIB.view.name incl/excl MIB.subtree mask
## ============== ========= =========== ====
view all-mibs included .1 80

## MIB
## group.name context sec.model sec.level prefix read write notif
## ========== ======= ========= ========= ====== ==== ===== =====
access MyROGroup_1 "" v1 noauth exact all-mibs none none
access MyROGroup_2 "" v2c noauth exact all-mibs none none


3) start SNMP services on each reboot with the chkconfig command

[root@leo]# chkconfig snmpd on
[root@leo]#

4) Start SNMP to load the current configuration file.

[root@leo]# service snmpd start



5) Test SNMP

[root@leo]# snmpwalk -v 1 -c secrect123 localhost system

[root@leo]# snmpwalk -v 1 -c secrect123 localhost interface



Configuring MRTG


1) Use MRTG's cfgmaker command to create a configuration file named mrtg.cfg for the server using a Read Only community string of secrect123. Place all data files in the directory /var/www/mrtg.

[root@leo]# cfgmaker --output=/etc/mrtg/mrtg.cfg \
--global "workdir: /var/www/mrtg" -ifref=ip \
--global 'options[_]: growright,bits' \secrect123@localhost

2) Use MRTG's indexmaker command to create a Web index page using your new mrtg.cfg file as a guide. The MRTG Web GUI expects to find the index file in the default MRTG Web directory of /var/www/mrtg/, so the format of the command would be.

[root@leo]# indexmaker --output=/var/www/mrtg/index.html \ /etc/mrtg/mrtg.cfg


3) Add MRTG line in /etc/cron.d/mrtg and restart crond daemon

0-59/5 * * * * root env LANG=C /usr/bin/mrtg /etc/mrtg/mrtg.cfg

4) Run MRTG using /etc/mrtg/mrtg.cfg as your argument three times.

[root@leo]# env LANG=C /usr/bin/mrtg /etc/mrtg/mrtg.cfg
[root@leo]# env LANG=C /usr/bin/mrtg /etc/mrtg/mrtg.cfg
[root@leo]# env LANG=C /usr/bin/mrtg /etc/mrtg/mrtg.cfg


Configuring Apache To Work With MRTG

MRTG is useful because it can provide a graphical representation of your server's performance statistics via a Web browser.

1)
#add lines at end to /etc/httpd/conf/httpd.conf

< Location /mrtg >
Order deny,allow
Deny from all
Allow from localhost 10.16.1.0/24
< /Location >

2) restart httpd daemon to run with new configuration


3) URL : http://localhost/mrtg

GNU Freetalk - console based Jabber client

Looking for a New IM client ?

Here you can try this "GNU Freetalk - console based Jabber client".

Freetalk is a console based Jabber client. It features a readline interface with completion of buddy names, commands, and even ordinary English words. Freetalk is extensible, configurable, and scriptable through a Guile interface.

Firefox / Sunbird/ Thunderbird/ SeaMonkey Add-ons

Firefox/Sunbird/Thunderbird/SeaMonkey Add-ons allows you to customize application as per your taste. It's just few simple steps which enables your interested plug-in/themes/download/ on your application.

Below Find URL's For particular Add-on and there category

Firefox Add-ons
Sunbird Add-ons
Thunderbird Add-ons
SeaMonkey Add-ons


Firefox Add-ons: Browse Web Development

Firebug

Firebug integrates with Firefox to put a wealth of development tools at your fingertips while you browse. You can edit, debug, and monitor CSS, HTML, and JavaScript live in any web page..

FireFTP

FireFTP is a free, secure, cross-platform FTP client for Mozilla Firefox which provides easy and intuitive access to FTP servers.

Html Validator

HTML Validator is a Mozilla extension that adds HTML validation inside Firefox and Mozilla. The number of errors of a HTML page is seen on the form of an icon in the status bar when browsing. The extension can validate the HTML sent by the server or the HTML in the memory (after Ajax execution) ...

JavaScript Debugger
Venkman is the code name for Mozilla's JavaScript Debugger. Venkman aims to provide a powerful JavaScript debugging environment for Mozilla based browsers.

Basket note Pads :note-taking application

This multi-purpose note-taking application helps you to:

* Easily take all sort of notes
* Collect research results and share them
* Centralize your project data and reuse it
* Quickly organize your thoughts in idea boxes
* Keep track of your information in a smart way
* Make intelligent To Do lists


download here