diff --git a/ampl.md b/ampl.md
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--- /dev/null
+++ b/ampl.md
@@ -0,0 +1,9 @@
+# Ampl
+
+- https://twitter.com/flancian/status/1360343767174160385
+- [[go]] en.wikipedia.org/wiki/AMPL
+
+
+[//begin]: # "Autogenerated link references for markdown compatibility"
+[go]: go "Go"
+[//end]: # "Autogenerated link references"
\ No newline at end of file
diff --git a/dennis-ritchie.md b/dennis-ritchie.md
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+++ b/dennis-ritchie.md
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+# Dennis Ritchie
+
diff --git a/unix.md b/unix.md
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index 000000000..db421fab6
--- /dev/null
+++ b/unix.md
@@ -0,0 +1,2 @@
+# Unix
+