Differences

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--- info [2010/04/11 22:43] – k2patel
+++ info [2020/08/10 02:35] (current) – external edit 127.0.0.1
@@ Line 12: / Line 12: @@
 z : defunct ("zombie") process, terminated but not reaped by its parent.
 </code>
 ==== Init Runlevel ====
 <code text>
-ID	Description
 	Halt
 	Single-User mode
@@ Line 23: / Line 21: @@
 	Multi-User mode, with display manager as well as console logins
 	Reboot
+</code>
+==== Named ====
+First Block explained.
+<code bash | example.org>
+$TTL 3600        ; 1 hour default TTL
+example.org.    IN      SOA      ns1.example.org. admin.example.org. (
+                                2006051501      ; Serial
+           ; Refresh
+            ; Retry
+          ; Expire
+             ; Negative Response TTL
+                        )
+</code>
+=== Magic Number ===
+this is considered magic serial number because.\\
+as soon as your set this number DNS reset it's counter.
+<code text>
+2147483647
+</code>
+==== File Permission notation ====
+<code text>
+- denotes a regular file
+d denotes a directory
+b denotes a block special file
+c denotes a character special file
+l denotes a symbolic link
+p denotes a named pipe
+s denotes a domain socket
 </code>