Linux

Block specific IP addresses

Some times there is a need to block specific IP addresses, for example: you saw that you mysql server sometimes is crashing, …

I wanted to block specific port in my webserver and whitelist my IP address. To achieve that I used: iptables -A INPUT …

Working with console, sometimes is necessary to see files structure in graphical way. To do this we need to install “tree”, on …

To get free disks space simply open a new terminal window and type in this command: df -h If you want to …

I had performance issues when was working with MySQL server on UBUNTU machine. My application was running very slow. Databases import was …