Search notes:

/lib/ld-linux.so.2

/lib/ld-linux.so.2 is dynamic loader. (Aka known as the execution time linker/loader).
Apparently, readelf -l /path/to/executable | grep intepreter refers to /lib/ld-linux.so.2 as program interpreter.
The 64 bit dynamic loader is /lib64/ld-linux-x86-64.so.2.

See also

/lib

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