command -v /usr/bin/top
/usr/bin/top

file /usr/bin/top
/usr/bin/top: ELF 64-bit LSB shared object, x86-64, version 1 (SYSV),
dynamically linked, interpreter /lib64/ld-linux-x86-64.so.2, for GNU/Linux 3.2.0,
BuildID[sha1]=d4fd52be0612e63121335a430fe47f8bbd9fe009, stripped

ELF 64-bit LSB shared object、つまり、.so、Windows で言うDLL