nixos-demo/users/demo/home/bash.nix

{ ... }:

{
  programs = {
    bash = {
      enable = true;
      shellAliases = {
        ll = "ls -lAh";
        cp = "cp -iv";
        mv = "mv -iv";
        rm = "rm -iv";
        df = "df -h";
        listgen = "sudo nix-env -p /nix/var/nix/profiles/system --list-generations";
      };
    };
  };
}