getfattr, setfattr, sysdig: add page (#13921)

* sysdig

* Add periods and colons

* Modified with recommended changes

* Fix typo

* Attribute

* Made fixes

* Removed spaces

* Newline

* Design changes

* Corrected link and attribute name

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Co-authored-by: Wiktor Perskawiec <git@spageektti.cc>

pages/linux/getfattr.md

@@ -0,0 +1,12 @@
+# getfattr
+
+> Display file names and extended attributes.
+> More information: <https://manned.org/getfattr>.
+
+- Retrieve all extended attributes of a file and display them in a detailed format:
+
+`getfattr -d {{path/to/file}}`
+
+- Get a specific attribute of a file:
+
+`getfattr -n user.{{attribute_name}} {{path/to/file}}`