```
[matthew@t480:~]$ readlink -m $(which man)
readlink: invalid option -- 'm'
BusyBox v1.31.1 () multi-call binary.

Usage: readlink [-fnv] FILE

Display the value of a symlink

	-f	Canonicalize by following all symlinks
	-n	Don't add newline
	-v	Verbose

[matthew@t480:~]$ sudo su
[sudo] password for matthew: 

[root@t480:/home/matthew]# readlink -m $(which man)
/nix/store/qc575whv8cbv0da9imaa01b31lb9mlw4-man-db-2.9.3/bin/man
```