forgot to commit openos

data/openos/usr/man/hostname

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+NAME
+  hostname - Display and modify hostname
+
+SYNOPIS
+  hostname [NEW NAME] [--update]
+
+EXAMPLES
+  hostname
+    Prints currently set hostname
+
+  hostname test
+    Sets hostname of this computer to test
+
+  hostname --update
+    Updates $HOSTNAME by reading /etc/hostname in case it was set manually. Does not print to stdout