From 5e97e30ffe0f4a625a58d0ad547ea77ee366f0bf Mon Sep 17 00:00:00 2001
From: Michele Cereda <cereda.michele@gmail.com>
Date: Thu, 5 May 2022 15:12:38 +0200
Subject: [PATCH] Added sort and uniq notes to the knowledge base

---
 knowledge base/sort.md | 17 +++++++++++++++++
 knowledge base/uniq.md | 20 ++++++++++++++++++++
 2 files changed, 37 insertions(+)
 create mode 100644 knowledge base/sort.md
 create mode 100644 knowledge base/uniq.md

diff --git a/knowledge base/sort.md b/knowledge base/sort.md
new file mode 100644
index 0000000..161396e
--- /dev/null
+++ b/knowledge base/sort.md	
@@ -0,0 +1,17 @@
+# Sort
+
+## TL;DR
+
+```shell
+# Sort all given lines.
+sort path/to/file
+
+# Sort all lines reverse.
+sort -r path/to/file
+
+# Sort lines numerically.
+sort -n path/to/file
+
+# Sort lines and remove duplicates.
+sort -u path/to/file
+```
diff --git a/knowledge base/uniq.md b/knowledge base/uniq.md
new file mode 100644
index 0000000..1f690a6
--- /dev/null
+++ b/knowledge base/uniq.md	
@@ -0,0 +1,20 @@
+# Uniq
+
+## TL;DR
+
+```shell
+# Print all but duplicates lines.
+uniq path/to/file
+
+# Only print unique lines.
+uniq -u path/to/file
+
+# Only print repeating lines.
+uniq -d path/to/file
+
+# Count unique lines only.
+uniq -cu path/to/file
+
+# Count duplicated lines only.
+uniq -cd path/to/file
+```