lsns

The lsns command line tool is used to display information about various namespaces in Linux systems. It stands for "list namespaces" and is a part of the util-linux package. When executed, it provides a list of existing namespaces along with their unique identifiers, types, and associated process IDs. The available namespace types include network, process, IPC, UTS (Unix Timesharing System), mount, user, and cgroup. Each namespace represents a virtual environment that isolates specific system resources for processes. The lsns command can be helpful in understanding the namespace configuration of a Linux system and tracking processes associated with different namespaces. It is typically used by system administrators, developers, and power users working with containerization technologies or managing various namespaces in a Linux environment.