launched in 1966, built specifically for the Michigan Bell to manage customer
A block has a storage capacity, and once it's used up, it can be closed and linked to a previously served block.
，更多细节参见爱思助手下载最新版本
NamespaceWhat it isolatesWhat the process seesPIDProcess IDsOwn process tree, starts at PID 1MountFilesystem mount pointsOwn mount table, can have different rootNetworkNetwork interfaces, routingOwn interfaces, IP addresses, portsUserUID/GID mappingCan be root inside, nobody outsideUTSHostnameOwn hostnameIPCSysV IPC, POSIX message queuesOwn shared memory, semaphoresCgroupCgroup root directoryOwn cgroup hierarchyTimeSystem clocks (monotonic, boot)Own system uptime and clock offsetsNamespaces are what Docker containers use. When you run a container, it gets its own PID namespace (cannot see host processes), its own mount namespace (own filesystem view), its own network namespace (own interfaces), and so on.，更多细节参见服务器推荐
老爸心软，他不仅不愿意用这种残忍的方式，还希望牛群能经常晒晒太阳，为此还专门拓展出个牛棚的外院，搭出一方露天的铁护栏。只是那铁护栏，隔个十天半个月的就被牛撞破了，于是，老爸也隔个十天半个月，就在田间地畔追着牛跑。