diff --git a/knowledge base/asdf.md b/knowledge base/asdf.md
index cf9a377..c3f3e99 100644
--- a/knowledge base/asdf.md	
+++ b/knowledge base/asdf.md	
@@ -66,6 +66,7 @@ brew install 'asdf'
 # Load ASDF's environment and completion.
 # Alternatively, just load oh-my-zsh's plugin for it.
 . "$(brew --prefix 'asdf')/asdf.sh"
+echo -e "source "(brew --prefix asdf)"/libexec/asdf.fish" | tee ~/'.config/fish/conf.d/asdf.fish'
 ```
 
 ## Plugins management
diff --git a/knowledge base/terraform.md b/knowledge base/terraform.md
index 520fe2f..bee1353 100644
--- a/knowledge base/terraform.md	
+++ b/knowledge base/terraform.md	
@@ -19,10 +19,22 @@
 
 ## TL;DR
 
+<details>
+  <summary>Installation</summary>
+
+```sh
+brew install 'terraform'
+```
+
+</details>
+
+<details>
+  <summary>Usage</summary>
+
 ```sh
 # Initialization.
 terraform init
-terraform init -reconfigure
+terraform init -reconfigure -update
 
 # Validate files.
 terraform validate
@@ -30,7 +42,7 @@ terraform validate
 # Show what would be done.
 terraform plan
 terraform plan -state 'path/to/file.tfstate' -var-file 'path/to/var.tfvars'
-terraform plan -out 'path/to/file.tfstate' -parallelism '50'
+terraform plan -destroy -out 'path/to/file.tfstate' -parallelism '50'
 
 # Make the changes.
 terraform apply
@@ -86,6 +98,8 @@ terraform graph | dot -Tsvg > 'graph.svg'
 terraform get -update -no-color
 ```
 
+</details>
+
 ## Modules
 
 Include a module in the configuration with the `module` keyword: