$ bash <(curl https://nixos.org/nix/install)
  % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
                                 Dload  Upload   Total   Spent    Left  Speed

  0     0    0     0    0     0      0      0 --:--:-- --:--:-- --:--:--     0
100  2358  100  2358    0     0   2358      0  0:00:01 --:--:--  0:00:01  3152
downloading Nix 1.11.15 binary tarball for x86_64-linux from 'https://nixos.org/releases/nix/nix-1.11.15/nix-1.11.15-x86_64-linux.tar.bz2' to '/tmp/nix-binary-tarball-unpack.vOcQ3PNjLS'...
  % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
                                 Dload  Upload   Total   Spent    Left  Speed

  0     0    0     0    0     0      0      0 --:--:-- --:--:-- --:--:--     0
  0 28.3M    0 49152    0     0  49152      0  0:10:03  0:00:01  0:10:02 45426
  6 28.3M    6 2000k    0     0  1000k      0  0:00:28  0:00:02  0:00:26 1004k
 27 28.3M   27 7952k    0     0  2650k      0  0:00:10  0:00:03  0:00:07 2658k
 39 28.3M   39 11.2M    0     0  2888k      0  0:00:10  0:00:04  0:00:06 2893k
 50 28.3M   50 14.2M    0     0  2928k      0  0:00:09  0:00:05  0:00:04 2930k
 59 28.3M   59 16.7M    0     0  2850k      0  0:00:10  0:00:06  0:00:04 3473k
 64 28.3M   64 18.2M    0     0  2669k      0  0:00:10  0:00:07  0:00:03 3335k
 69 28.3M   69 19.7M    0     0  2524k      0  0:00:11  0:00:08  0:00:03 2446k
 74 28.3M   74 21.1M    0     0  2408k      0  0:00:12  0:00:09  0:00:03 2022k
 79 28.3M   79 22.4M    0     0  2296k      0  0:00:12  0:00:10  0:00:02 1664k
 81 28.3M   81 23.2M    0     0  2160k      0  0:00:13  0:00:11  0:00:02 1331k
 84 28.3M   84 23.9M    0     0  2044k      0  0:00:14  0:00:12  0:00:02 1166k
 87 28.3M   87 24.7M    0     0  1948k      0  0:00:14  0:00:13  0:00:01 1024k
 90 28.3M   90 25.5M    0     0  1867k      0  0:00:15  0:00:14  0:00:01  891k
 93 28.3M   93 26.3M    0     0  1798k      0  0:00:16  0:00:15  0:00:01  803k
 94 28.3M   94 26.7M    0     0  1715k      0  0:00:16  0:00:16 --:--:--  736k
 96 28.3M   96 27.2M    0     0  1639k      0  0:00:17  0:00:17 --:--:--  667k
 97 28.3M   97 27.6M    0     0  1572k      0  0:00:18  0:00:18 --:--:--  595k
 98 28.3M   98 27.9M    0     0  1504k      0  0:00:19  0:00:19 --:--:--  489k
 99 28.3M   99 28.1M    0     0  1441k      0  0:00:20  0:00:20 --:--:--  371k
100 28.3M  100 28.3M    0     0  1449k      0  0:00:20  0:00:20 --:--:--  340k
performing a single-user installation of Nix...
directory /nix does not exist; creating it by running ‘mkdir -m 0755 /nix && chown avi /nix’ using sudo
copying Nix to /nix/store.................................
initialising Nix database...
installing ‘nix-1.11.15’
building path(s) ‘/nix/store/0scfamgyalc4kmg9943ra21a8xh3na5l-user-environment’
created 6 symlinks in user environment
downloading Nix expressions from ‘https://d3g5gsiof5omrk.cloudfront.net/nixpkgs/nixpkgs-18.03pre116369.14cbeaa892/nixexprs.tar.xz’...
unpacking channels...
created 2 symlinks in user environment

Installation finished!  To ensure that the necessary environment
variables are set, please add the line

  . /home/avi/.nix-profile/etc/profile.d/nix.sh

to your shell profile (e.g. ~/.profile).