sysctl:tldr:79717

The command "sysctl -a" is used in Linux and Unix-like operating systems to display all the system-wide variables and their current values.

Sysctl is a command-line tool that allows users to modify and view the kernel parameters at runtime. These parameters, also known as sysctl variables, control various aspects of the system's behavior and settings.

The "-a" flag is used to display all available sysctl variables along with their current values. When you execute the "sysctl -a" command, it will show a long list of variables in a key-value format.

These variables can be related to network settings, file system configurations, memory management, process scheduling, and many other aspects of the system. The output can be quite extensive, so it is often recommended to pipe the output to a pager program like "less" to navigate through it more easily (e.g., "sysctl -a | less").

Overall, "sysctl -a" provides a comprehensive overview of the system's current configuration and allows users to inspect and modify specific kernel parameters if needed.