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Dr. Marco B.R. Engeler

Thursday, 19. August Changing the type of an eclipse project

When you start a project with eclipse you specify its type such as ‘Java Project’, ‘Static Web Project’. If you decide at a later stage that you would want to convert it a ‘J2EE Project’ the GUI is of no help at all. Instead you...[more]

Category: Java

Thursday, 19. August Creating random passwords

Creating random passwords Setting up new users is a common task on unix systems and usually requires the creation of an initial password. The password should be random in order not to compromise security. Many users never change...[more]

Category: Linux

Thursday, 12. August Running Multiple SQL servers

Sometimes it is desirable to have multiple instances of the MySQL running on a single machine. MySQL is configured to read the my.cnf file by default from a couple of predefined locations. When running more than one MySQL server...[more]

Category: MySQL

Thursday, 12. August What load average means UNIX/Linux systems

[engeler@debian ~]$ uptime  09:43:14 up 16 days, 22:41,  1 user,  load average: 2.53, 1.84, 0.98 The UNIX commands w, top and uptime print out the load average. But what do those three numbers mean? Unix systems...[more]

Category: Linux

Thursday, 16. July Counting entries in a tab file

Basic data analysis on the shell: Count individual entries in a tab separated file.[more]

Category: Linux

Thursday, 16. July Setting up a script for chkconfig

On a Linux system services are started at system startup according to the entries in /etc/rc[0-6].d/ directories. The symlinks in these directories can be conveniently managed with the chkconfig program. In order to enable...[more]

Category: Linux

Saturday, 27. June UTF-8 Conversion

Converting between character sets on the Linux console[more]

Category: Linux