Add dig command resources

content/roadmaps/102-devops/content/102-managing-servers/101-live-in-terminal/119-dig.md

@@ -1 +1,12 @@
-# Dig
+# dig
+
+`dig` command stands for **D**omain **I**nformation **G**roper. It is used for retrieving information about DNS name servers. It is mostly used by network administrators for verifying and troubleshooting DNS problems and to perform DNS lookups. It replaces older tools such as `nslookup` and the `host`.
+
+It has the following syntax: `$ dig [server] [name] [type]` e.g. `$ dig roadmap.sh`
+
+<ResourceGroupTitle>Free Content</ResourceGroupTitle>
+<BadgeLink colorScheme='yellow' badgeText='Read' href='https://www.geeksforgeeks.org/dig-command-in-linux-with-examples/'>What is dig command?</BadgeLink>
+<BadgeLink colorScheme='yellow' badgeText='Read' href='https://linuxize.com/post/how-to-use-dig-command-to-query-dns-in-linux/'>More on dig</BadgeLink>
+<BadgeLink colorScheme='yellow' badgeText='Read' href='https://www.geeksforgeeks.org/host-command-in-linux-with-examples/'>What is host command?</BadgeLink>
+<BadgeLink colorScheme='yellow' badgeText='Read' href='https://www.geeksforgeeks.org/nslookup-command-in-linux-with-examples/'>What is nslookup command?</BadgeLink>
+<BadgeLink colorScheme='yellow' badgeText='Read' href='https://www.cloudflare.com/en-gb/learning/dns/what-is-dns/'>What is DNS?</BadgeLink>