# lsns > List information about all namespaces or about the specified namespace. > More information: . - List all namespaces: `lsns` - List namespaces in JSON format: `lsns --json` - List namespaces associated with {{pid}}: `lsns --task {{pid}}` - List the specified type of namespaces only: `lsns --type ` - List namespaces, only showing the namespace ID, type, PID, and command: `lsns --output NS,TYPE,PID,COMMAND`