> type nix
nix is ~/.nix-profile/bin/nix  (I put ~ for the home directory of my user)
> ls -l .nix-profile/bin/nix
lrwxrwxrwx   1 root           root           61 1969-12-31  1969 .nix-profile/bin/nix -> /nix/store/cdcia67siabmj6li7vyffgv2cry86fq8-nix-2.1.3/bin/nix