Posts

Simple ways to differentiate between stars and planets.

How to disable password-based root login by replacing it with SSH key-based login.

How to use a reverese SSH tunnel to access a machine behind NAT.

Tea, how it benefits your health.

Eclipse productivity shortcuts.

How to convert OpenSSH keys to PuTTY (PPK) and PuTTY to OpenSSH keys.

How to set up multiple sites on one Nginx server.

How to start iptables rules automatically at system startup.

A small list of fun valid C/C++ declarations.

Sleep is very important to health, and not enough of it can lead to issues with immune system, heart and circulatory system, hormone secretion and many other systems. Insufficient sleep can also lead to memory problems.

Food companies use lots of ingredients to extend shelf life, make foods more colorful, even to better the tastes, but some of these ingredients should be avoided.

How to fix the 'Permissions 0660 for '~/.ssh/id_rsa' are too open' error when trying to login to your remote host using an SSH key