First lets do an update before we start installing PostgreSQL $ yum update You can install PostgreSQL from CentOS Base repo or can do a search for the latest version and install it based on your needs. Method 1 describes manual setup and Method 2 indicates an install from CentOS base repo (more…)

List the listening ports and check if mysql is listed on it. $ netstat -tln | grep mysql If you cannot find the port number for mysql view my.cnf file to see if you can find the port number. If you see a line "skip-networking" try commenting out the line and then restart mysql daemon. $ vi /etc/my.cnf [mysqld] set-variable=local-infile=0 datadir=/var/lib/mysql socket=/var/lib/mysql/mysql.sock # Default to using old password format for compatibility with mysql 3.x # clients (those using the mysqlclient10 compatibility package). old_passwords=1 skip-networking [mysql.server] user=mysql basedir=/var/lib [mysqld_safe] log-error=/var/log/mysqld.log pid-file=/var/run/mysqld/mysqld.pid $ service mysqld restart

To check the Python version number in Linux, simply type $ python -V You will get an output

Python 2.4.3

$ /etc/init.d/apache2 restart After configuring Apache server settings on the name server, you may encounter a message "[warn] NameVirtualHost 192.168.1.3:80 has no VirtualHosts" The issue may be due to more than one entry of NameVirtualHost lines in the configuration settings. You can find this out by $ grep NameVirtual * -R site1:NameVirtualHost *:80 site2:NameVirtualHost *:80 Linux Solution: Remove one of the occurance of the NameVirtualHost and the warning message that you receive will vanish.

To display a list of directories in Linux, issue the command $ ls -l | egrep '^d'

There are different variants of Linux in the market like RedHat, Debian, CentOS, Ubuntu, Mandrake, Suse and a Linux beginner often ponder why they call Linux distributions by various names. The kernel or the heart of all the distributions is Linux and in bringing it to different market usage different community or vendors have adopted the kernel to serve that purpose. (more…)