To clear the screen content in MySQL use the command mysql> \! clear Usage of "\!" tells MySQL to pass the command to Linux OS to handle the request. If you are in a Windows environment (DOS prompt), to pass the control to the OS you can use the command mysql>system cls

Location where the Apache error log entries can be found in Ubuntu user@server:~# less /var/log/apache2/error.log

Reason why this error might occur: i) Incomplete MySQL implementation ii) MySQL setting mis-configuration Solution: root@myserver:/# vi /etc/mysql/my.cnf Comment out the below line in my.cnf file to make MySQL listen on ALL interfaces #bind-address = 127.0.0.1 root@myserver:/# netstat -tap | grep mysql tcp 0 0 *:mysql *:* LISTEN 17785/mysqld Note that above line which indicates MySQL listening on all interfaces.

SSL Error: Revocation information for the security certificate for this site is not available. Do you want to proceed? Solutions: i) Install the root CA under Trusted Certificate Authority or, ii) Add an exception to the browser filter not to check certificate revocation or, iii) Programatically handle the SSL stream when request is made from the server

Git - Distributed repository system (adaptive work flow models) - Source control taxonomy: DAG storage - URI to git directory is where the repository is stored and it always has branches and tags - Repository root folder contains a .git directory which maintains file history - Scalability - Faster, Efficient branching and merging - License: Copyleft Subversion (SVN) - Centralized repository system - Source control taxonomy: Delta storage - URI to a subversion depository most commonly adopts /trunks, /branches and /tags directories - Each folder maintains a .svn directory to store the file history - Not efficient in scaling - Not efficient in branching and merging - License: Copyfree

PDF Split and Merge (pdfsam) - an elegant tool that establishes the tasks stated in the name of the product. pdfsam is distributed under GPL license and requires Java Virtual Machine 1.4.2 or higher. This tools helps you in splitting PDF documents into individual pages, merge many pages into a single document, extract odd/even pages and many other features in its basic version. To learn more about this tool or to download a copy of it visit pdfsam.org