modinfo: add page (#1585)

pages/linux/modinfo.md

@@ -0,0 +1,11 @@
+# modinfo
+
+> Extract information about a Linux kernel module.
+
+- List all attributes of a kernel module:
+
+`modinfo {{kernel_module}}`
+
+- List the specified attribute only:
+
+`modinfo -F {{author|description|license|parm|filename}} {{kernel_module}}`