[root@bogon ~]# mkdir -p /sys/fs/cgroup/memory/demo
[root@bogon ~]# echo 2097152 > /sys/fs/cgroup/memory/demo/memory.limit_in_bytes  # 限制使用2MB内存

[root@bogon ~]# demo/cg_mem.sh &
[1] 64191
[root@bogon ~]# echo 64191 > /sys/fs/cgroup/memory/demo/tasks