Update cheatsheets

linux/dnstracer

@@ -0,0 +1,33 @@
+---
+syntax: markdown
+tags: [tldr, linux]
+source: https://github.com/tldr-pages/tldr.git
+---
+# dnstracer
+
+> The dnstracer command determines where a DNS gets its information from.
+> More information: <https://manned.org/dnstracer>.
+
+- Find out where your local DNS got the information on www.example.com:
+
+`dnstracer {{www.example.com}}`
+
+- Start with a [s]pecific DNS that you already know:
+
+`dnstracer -s {{dns.example.org}} {{www.example.com}}`
+
+- Only query IPv4 servers:
+
+`dnstracer -4 {{www.example.com}}`
+
+- Retry each request 5 times on failure:
+
+`dnstracer -r {{5}} {{www.example.com}}`
+
+- Display all steps during execution:
+
+`dnstracer -v {{www.example.com}}`
+
+- Display an [o]verview of all received answers after execution:
+
+`dnstracer -o {{www.example.com}}`