Installing LAMP on Linux --> The easy way

What is LAMP? Its actually a short form the expansion of LAMP is
L --> Linux
A --> Apache
M --> Mysql
P --> Php {{ P can be perl or python too }}
These are the basic things which are needed for a web server to work. The steps for installation are for red hat flavoured Linux systems or servers.
Login as root to the server where LAMP is to be installed.

• APACHE

# yum install httpd httpd-devel
# /etc/init.d/httpd start
Now the apache will be installed and its running. You can verify the installation by giving the command.
# telnet localhost 80 which should give the output silimilar to this
--------------------------------------------------------------
telnet localhost 80
Trying 127.0.0.1...
Connected to localhost (127.0.0.1).
Escape character is '^]'.
--------------------------------------------------------------
To configure apache you will have to edit the configuration file /etc/httpd/conf/httpd.conf. Please make sure to restart apache after editing configuration file for changes to take effect.
#/etc/init.d/httpd restart

• MYSQL

# yum install mysql mysql-server mysql-devel
# /etc/init.d/mysqld start
Now Mysql is started. We will perform a quick basic setup of mysql now.
Note: For fedora 16/17 users
systemctl start mysqld.service
systemctl enable mysqld.service
# mysql
Welcome to the MySQL monitor.  Commands end with ; or \g.
Your MySQL connection id is 349034 to server version: 4.1.22-standard
Type 'help;' or '\h' for help. Type '\c' to clear the buffer.
mysql>
Set the mysql root password now:
mysql>USE mysql;
(Replace 'yourpass with your required password' in the command below)
mysql> UPDATE user SET Password=PASSWORD('yourpass') WHERE user='root';
mysql> FLUSH PRIVILEGES;
mysql> quit
Bye
Now to login with new details:
mysql -u root -p
Enter Password:

• PHP

# yum install php php-mysql php-common php-gd php-mbstring php-mcrypt php-devel php-xml
# /etc/init.d/httpd restart
To verify the php installation type the command below:
# php -v
We can also create a php info page to test this.

Read more »

List top 10 Files or Directories Size Wise

Type the command below to see the files listed size wise from higher size files to lower size files.

-----------------
for X in $(du -s * | sort -nr | cut -f 2); do du -hs $X ; done
-----------------

Read more »

Adding an IP range

Create a file named ifcfg-eth0-range0 in the /etc/sysconfig/network-scripts. Inside this file enter the following:
-----------
IPADDR_START=192.168.0.10
IPADDR_END=192.168.0.110
CLONENUM_START=0
-----------

IPADDR_START: This is the first IP from the address range you want to bind to your ethernet device.
IPADDR_END: This is, of course, the last IP from that address range.
CLONENUM_START: This is the number that will be assigned to the first IP alias interface. For instance, if your Internet interface is eth0 and CLONENUM_START is 0, then this config file will create 100 interfaces starting with eth0:0 (eth0:0, eth0:1, eth0:2 etc) and ending with eth0:100.

NOTE! Be careful if you need to add more ranges of IPs. You'll have to use a proper value for CLONENUM_START. For instance, if you need to add a second range with 100 IPs besides the one above, create a new file called ifcfg-eth0-range1 and set the CLONENUM_START to 101 so an overwrite will be avoided. Also please backup the existing files before editing this.

AFTER THIS DONT FORGET TO RESTART NETWORK

=> service network restart

Read more »

Installing Local RPMs

To install an RPM file that you downloaded outside of yum, open up a terminal, and as root do:

rpm -Uvh filename.rpm

If you have Internet access, you can also install local files by doing:

yum --nogpgcheck install filename.rpm

Read more »

Setting Up Package Installation RPMFORGE

After successful installation of Linux OS, many of the commonly used applications cannot be installed using yum. We have to configure the repositories or set-up packages. The easiest way to do it.

To configure your system so that you can install packages from rpmforge, follow these instructions:

   1. Open a Terminal.

   2. Become root:
      su -

   3. Run the following command:
      yum --nogpgcheck install http://rpm.livna.org/livna-release.rpm http://download1.rpmfusion.org/free/fedora/rpmfusion-free-release-stable.noarch.rpm http://download1.rpmfusion.org/nonfree/fedora/rpmfusion-nonfree-release-stable.noarch.rpm

Note: Tested in Fedora and Cent OS

Read more »