These commands can tell you what key bindings you have in your bash shell by default.

bind -P | grep 'can be'
stty -a | grep ' = ..;'

Self-contained C/C++ profiler library for Linux

SSH can use a variety of authentication methods, such as passwords and key pairs. Less common, and not particularly user friendly, are methods like OPIE. The latter is available per default in FreeBSD (and a few other BSDs I believe), but I can't recall a single case where I've seen it being used in the wild. Other implementations, like Google Authenticator make MFA easy to integrate and use, without being too disruptive for the user.

The idea behind it is as follows: classes should not define any of the special functions (copy/move constructors/assignment, and the destructor) unless they are classes dedicated to resource management.

NGINX leads the pack in web performance, and it’s all due to the way the software is designed. Whereas many web servers and application servers use a simple threaded or process-based architecture, NGINX stands out with a sophisticated event-driven architecture that enables it to scale to hundreds of thousands of concurrent connections on modern hardware.