diff --git a/data_structures/LinkedLists/double_list.rb b/data_structures/linked_lists/double_list.rb similarity index 100% rename from data_structures/LinkedLists/double_list.rb rename to data_structures/linked_lists/double_list.rb diff --git a/data_structures/LinkedLists/single_list.rb b/data_structures/linked_lists/single_list.rb similarity index 100% rename from data_structures/LinkedLists/single_list.rb rename to data_structures/linked_lists/single_list.rb diff --git a/Project Euler/Problem 1/problem1_sol1.rb b/project_euler/problem_1/problem1_sol1.rb similarity index 100% rename from Project Euler/Problem 1/problem1_sol1.rb rename to project_euler/problem_1/problem1_sol1.rb diff --git a/Project Euler/Problem 2/problem2_sol1.rb b/project_euler/problem_2/problem2_sol1.rb similarity index 100% rename from Project Euler/Problem 2/problem2_sol1.rb rename to project_euler/problem_2/problem2_sol1.rb diff --git a/Project Euler/Problem 20/problem20_sol1.rb b/project_euler/problem_20/problem20_sol1.rb similarity index 100% rename from Project Euler/Problem 20/problem20_sol1.rb rename to project_euler/problem_20/problem20_sol1.rb diff --git a/Project Euler/Problem 21/problem21_sol1.rb b/project_euler/problem_21/problem21_sol1.rb similarity index 100% rename from Project Euler/Problem 21/problem21_sol1.rb rename to project_euler/problem_21/problem21_sol1.rb diff --git a/Project Euler/Problem 22/p022_names.txt b/project_euler/problem_22/p022_names.txt similarity index 100% rename from Project Euler/Problem 22/p022_names.txt rename to project_euler/problem_22/p022_names.txt diff --git a/Project Euler/Problem 22/problem22_sol1.rb b/project_euler/problem_22/problem22_sol1.rb similarity index 100% rename from Project Euler/Problem 22/problem22_sol1.rb rename to project_euler/problem_22/problem22_sol1.rb diff --git a/Project Euler/Problem 3/problem3_sol1.rb b/project_euler/problem_3/problem3_sol1.rb similarity index 100% rename from Project Euler/Problem 3/problem3_sol1.rb rename to project_euler/problem_3/problem3_sol1.rb diff --git a/Project Euler/Problem 5/problem5_sol1.rb b/project_euler/problem_5/problem5_sol1.rb similarity index 100% rename from Project Euler/Problem 5/problem5_sol1.rb rename to project_euler/problem_5/problem5_sol1.rb