diff --git a/knowledge base/ansible.md b/knowledge base/ansible.md
index 7915e05..a6471e2 100644
--- a/knowledge base/ansible.md	
+++ b/knowledge base/ansible.md	
@@ -45,7 +45,7 @@ ansible-playbook path/to/playbook.yml -i hosts.list
 ansible-playbook path/to/playbook.yml -i host1,host2,hostn, -l hosts,list
 ansible-playbook path/to/playbook.yml -i host1,host2,other, -l hosts-pattern
 
-# Show what changes (with details) a play whould apply to the local machine.
+# Show what changes (with details) a play would apply to the local machine.
 ansible-playbook path/to/playbook.yml -i localhost, -c local -vvC
 
 # Only execute tasks with specific tags.
@@ -173,7 +173,7 @@ Return a boolean result.
     - variable1
     - variableN
 
-# Iterate thrugh nested loops.
+# Iterate through nested loops.
 - vars:
     middles:
       - 'middle1'
@@ -325,7 +325,7 @@ Add the `check_mode: false` pair to the task:
 Add the `check_mode: true` pair to the task:
 
 ```yaml
-- name: This task will always run under checkmode and not change the system
+- name: This task will always run under check mode and not change the system
   check_mode: true
   ansible.builtin.lineinfile:
     line: "important file"
diff --git a/knowledge base/dd.md b/knowledge base/dd.md
index 30e97da..da448f8 100644
--- a/knowledge base/dd.md	
+++ b/knowledge base/dd.md	
@@ -32,5 +32,5 @@ dd if=path/to/file.img of=/dev/drive_device status=progress
 
 - [cheat.sh]
 
-<!-- -->
+<!-- external references -->
 [cheat.sh]: https://cheat.sh/dd
diff --git a/knowledge base/mktemp.md b/knowledge base/mktemp.md
index 2e2ebc3..5c3b42c 100644
--- a/knowledge base/mktemp.md	
+++ b/knowledge base/mktemp.md	
@@ -13,7 +13,7 @@ mktemp -d
 
 # create an empty temporary file or directory with a random templated name
 # the Xs must be put at the end of the filename
-# the Xs specifies the templated parts and lenght in the file name
+# the Xs specifies the templated parts and length in the file name
 mktemp /tmp/filenameXXX
 mktemp -d /tmp/dirname.XXX