If, like me, you've ever been curious about if/how coreutil's du command
handles hard links:
$ mkdir test
$ mkdir test/a test/b
$ dd if=/dev/zero of=test/a/a bs=1M count=1
1+0 records in
1+0 records out
1048576 bytes (1.0 MB, 1.0 …Articles in the Unix category
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