Find - POSIX Protection From Infinite Output

POSIX Protection From Infinite Output

Real-world filesystems often contain looped structures created through the use of hard or soft links. The POSIX standard requires that

The find utility shall detect infinite loops; that is, entering a previously visited directory that is an ancestor of the last file encountered. When it detects an infinite loop, find shall write a diagnostic message to standard error and shall either recover its position in the hierarchy or terminate.

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