added Dig command

.github/workflows/mergeFiles.yml

@@ -19,7 +19,7 @@ jobs:
     - name: Merge MD Files
       run: |
         # Define the order of markdown files to merge
-        files_to_merge=("index.md", "navigation.md", "files.md", "ssh.md", "scp.md", "sed.md", "grep.md", "searchingFiles.md", "netstat.md", "lsof.md", "curl.md", "wget.md", "redirection.md", "process_substitution.md")
+        files_to_merge=("index.md", "navigation.md", "files.md", "ssh.md", "scp.md", "sed.md", "grep.md", "searchingFiles.md", "netstat.md", "lsof.md", "curl.md", "wget.md", "dig.md", "redirection.md", "process_substitution.md")
         # remove existing contents readme
         echo '' > README.md
         # Merge files in the specified order

dig.md

@@ -0,0 +1,20 @@
+## Dig Command
+> This command is used to find DNS records.
+
+```shell
+# command format
+dig @<dns_ip> <domain> <record_type>
+
+# find A(ipv4) record of facebook.com
+dig facebook.com A
+# find AAAA(ipv6) record of google.com from cloudflare dns
+dig @1.1.1.1 facebook.com AAAA
+
+# types of records
+# - A > ipv4
+# - AAAA > ipv6
+# - CNAME > canonical names
+# - MX > mail servers
+# - SOA > Start of Authority
+# - TXT > TXT records
+```

index.md

@@ -14,7 +14,7 @@
 10. [Curl Byte](#curl-command)
 11. [Wget Byte](#wget-command)
 12. [Tcpdump Byte](#TCPDUMP)
-13. [Dig Byte](#DIG)
+13. [Dig Byte](#dig-command)
 14. [Iptables Byte](#IPTABLES)
 15. [Ufw Byte](#UFW)
 16. [Ipaddr Byte](#IPADDR)