diff --git a/Operating_Systems/Devices.md b/Operating_Systems/Devices.md
index 150c4fb..bc14d7f 100644
--- a/Operating_Systems/Devices.md
+++ b/Operating_Systems/Devices.md
@@ -9,7 +9,7 @@ tags:
 
 Devices are hardware that require access to the CPU in order to function. Devices can either be external and plugged-in or internal to the motherboard. The most common type of device that you will work with are [disks](./Disks.md).
 
-Devices are files but they have some different capabilities than ordianry files. There are two types: **block** and **stream**. Device files reside in the `/dev/` directory.
+Devices are files but they have some different capabilities than ordinaryq files. There are two types: **block** and **stream**. Device files reside in the `/dev/` directory.
 
 Some of the most important device files are:
 
@@ -49,4 +49,6 @@ The [mode](/Programming_Languages/Shell_Scripting/File_permissions_and_execution
 
 `/dev/null` is a virtual device: it doesn't actually exist as a piece of hardware on the system. It can be useful when [bash scripting](/Programming_Languages/Shell/Redirect_to_dev_null.md) as a place to direct output that you don't care about, for example errors or verbose program read-outs.
 
+I like to think of `/dev/null` as being like earth in a circuit. It's an outlet to safely dispose of things you are not interested in.
+
 > ! Make notes on this. Base on : https://linuxhint.com/what_is_dev_null/
diff --git a/_meta/Topic_Log.md b/_meta/Topic_Log.md
index b65ce95..17de264 100644
--- a/_meta/Topic_Log.md
+++ b/_meta/Topic_Log.md
@@ -9,10 +9,14 @@
 - Read up properly about `find` and `read`
 - `.list` file extension
 - Error handling
-
+- Splitting strings
 - Awk
   - https://dane-bulat.medium.com/the-awk-programming-language-an-introduction-7035d343cd30
 
+## Linux
+
+- `/dev/null` in greater depth
+
 ## SQL
 
 - What is a _schema_ in MySQL/ SQL ?