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.
Updates with Bootc and OSTree#I’m going to add a CI/CD pipeline (Github Actions) that will build a new OCI image every time I push a change to my Containerfile. Then, I’ll push this image to my Harbor registry.
output[count[idx] - 1] = arr[i]; // 放到正确位置，推荐阅读91视频获取更多信息
Short-form: $15/month
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// 栈空 → 无更大元素，返回-1；栈非空 → 取栈顶（第一个更大值）