Syncing Data
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A data structure on a Linux filesystem that stores metadata about a file — permissions, ownership, timestamps, and pointers to data blocks — but not the filename itself.
Control groups — a Linux kernel feature that limits, accounts for, and isolates the CPU, memory, disk I/O, and network usage of process groups.
A Linux kernel feature that partitions system resources (PIDs, network, mounts, users) so that processes see an isolated view of the system.
Set User ID — a special permission bit that allows an executable to run with the privileges of the file owner rather than the user who launched it.