Information technology emerged in several fields like software development, business process outsourcing, knowledge process outsourcing, etc. In order to finish the tasks quickly, every company is designing and developing software for their needs, they are using the software provided by leading Information technology companies that have got much-improved technological software. For this, a huge sum is needed if the system is followed. Today, open source technologies help several companies to develop their own product by using their products without cost. Several open source products are available in the market, but Lamp Linux stands in the top. The Linux, Apache, Mysql and Php are included in lamp Linux. Since the lamp, Linux is developed under open source technology, anybody can get any sort of support from any users all over the world.
Linux is an operating system through which anyone can develop apache, mysql and php. In the word Lamp, "L" denotes Linux, which is an operating system "A" indicates Apache, a web server, "M" stands for mysql, which is a database server and finally "P" denotes php used for application development.
Today Lamp Linux is largely used by most of the companies due to its popularity in developing enterprise level products. After installing the Linux operating system you can download the tar files for apache, mysql, php from the website in order to edit the source code and develop it, in accordance to the needs. It can download separately or may be integrated by using the tool "XAMPP.". It may be seen from the above that anyone without any sort of difficulty could operate by using lamp Linux and get success in developing the products without any hurdles and also make one to connect the world easily.
It is quite necessary to have the system always updated in order to keep stable and reducing our worries much about the mal wares and viruses. The chance of attack by viruses is less if lamp Linux is followed when compared to windows operating systems. So, now-a-days, almost all companies prefer the usage of lamp Linux.
Linux is an operating system which includes several packages and by installing it; you can do the tasks effectively and efficiently.
While Linux booting the system, there are seven levels are involved namely post, bios, MBR, grub, kernel, INIT, and run levels. Post tells the bios what are the hardware required for booting the system. Bios loads all the driver software detected by post. MBR reads the first sector of the hard disk where a boot loader lies. Grub is a boot loader, which is used to select the operating system of your choice, when installing two or more of them. Kernel loads the module depends on the hardware configuration, and initialization invokes the INIT process. INIT refers to corresponding INITTAB file and boots the system depends on the default run level were set in it.
Every Linux file system is managed by the root user because he is the system administrator who has full rights to control to whom he should provide access and deny.
The Linux kernel controls all the hardware device drivers and assigns appropriate modules. Defaults on static modules are loaded, and they are also called as monolithic kernel and dynamic kernel called as a modular kernel. All kernel logs are stored in "/VAR/LOG/DMESG" to know further about kernel errors. If you have the backup copy of your kernel, you can restore it in case of kernel panic error occurs.
If you want to share a file or printer among windows's users, the concept of samba will help you. You can configure samba file in "/ETC./SAMBA/SMB.CON." After your configuration in Linux, you can check, if it has correctly shown by using 'TESTPARM' command.
Within a Linux system if you want to share a file, you can use NFS, which is called as network file system and "/etc./exports" file for configuration. You can view the exported directory by using the command "SHOWMOUNT -e" and checks all files using to mount -a command.
Apache is used in all web applications created under Linux because it is the web server and uses the port no 80 to show the running process of HTTPD daemon. You can configure it by using the command "/ETC./HTTPD/CONF" and to run all pages under it in the path named "/VAR/WWW/HTML.". Using the command "HTTPD -t" you can check the configuration information, "HTTPD -S" for virtual hosting information and add modules depending on the needs. Using the "access_log" file you can retrieve the apache hit counts, and if you want it to be showed in charts in a graphical manner, use the WEBALISER tool.
Mysql is known as a database server which stores all information in the back end. You can absolutely store and retrieve the data freely by using mysql queries. All database information is stored under the directory called "/VAR/LIB/MYSQL.". It uses the port number 3306 and the service under "/ETC./INIT.D/mysql" will be executed.
You can create dynamic web pages using php, and the module for apache is a mod-php, and its configuration file lies under "/ETC./HTTPD/CONF.D/PHP.CON." You can create powerful web application with the help of php using its coding techniques, and also you can create complex scripting, which leads to manage Linux application. Using the "php.ini" file you can check your configured information and make it possible changes to take effect.
By using all lamp Linux concepts efficiently you can build secure, powerful and stable web applications.
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