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lsns:tldr:d9c92
The command "lsns --json" is used to list the namespaces in a Linux system and output the results in JSON format.
In Linux, namespaces are a feature that allows the isolation and virtualization of system resources for different processes. They provide a way to separate and manage different aspects of the system, such as process IDs, network interfaces, users, filesystems, and more.
The "lsns" command is used to display information about these namespaces. By adding the flag "--json" to the command, the output is formatted as a JSON (JavaScript Object Notation) string. JSON is a lightweight data-interchange format that is easy for machines to parse and generate, and often used for transmitting data between a server and a web application.
The "lsns --json" command will list all the currently active namespaces in the system in JSON format, including information such as the namespace type, ID, and process ID associated with each namespace. This can be helpful for various purposes, such as monitoring and managing namespaces in a Linux environment.