man: use long options in examples (#8216)

* man: use long options in examples
* man: move long options to /linux/

pages/linux/man.md

@@ -0,0 +1,32 @@
+# man
+
+> Format and display manual pages.
+> More information: <https://www.man7.org/linux/man-pages/man1/man.1.html>.
+
+- Display the man page for a command:
+
+`man {{command}}`
+
+- Display the man page for a command from section 7:
+
+`man {{7}} {{command}}`
+
+- List all available sections for a command:
+
+`man --whatis {{command}}`
+
+- Display the path searched for manpages:
+
+`man --path`
+
+- Display the location of a manpage rather than the manpage itself:
+
+`man --where {{command}}`
+
+- Display the man page using a specific locale:
+
+`man {{command}} --locale={{locale}}`
+
+- Search for manpages containing a search string:
+
+`man --apropos "{{search_string}}"`