Consolidate shell tips

shell/shell_tips.md

@@ -15,5 +15,27 @@ tags:
 # Search & Clear Highlights
 
 You can search in many programs by using `/`.
-Most programs let you clearn the highlighting with `<Esc>+u`.
+Most programs let you clear the highlighting with `<Esc>+u`.
 
+
+## Track Live Changes
+
+Follow a file as new lines are added to it:
+
+```sh
+tail -f *somefile*
+```
+
+See changes in a directory, as it changes:
+
+`watch -d ls *directory*`
+
+Or use the `-g` flag to exit once the output changes.
+This command will look at whether you're connected to the internet, and turn into a rainbow once the connection hits.
+
+> watch -g ip address && clear && ip address | lolcat
+
+
+# See Also
+
+- [Bash tips](shell/bash_tips.md)