hexyl: add page (#3437)

pages/common/hexyl.md

@@ -0,0 +1,20 @@
+# hexyl
+
+> A simple hex viewer for the terminal. Uses colored output to distinguish different categories of bytes.
+> More information: <https://github.com/sharkdp/hexyl>.
+
+- Print the hexadecimal representation of a file:
+
+`hexyl {{path/to/file}}`
+
+- Print the hexadecimal representation of the first n bytes of a file:
+
+`hexyl -n {{n}} {{path/to/file}}`
+
+- Print bytes 512 through 1024 of a file:
+
+`hexyl -r {{512}}:{{1024}} {{path/to/file}}`
+
+- Print 512 bytes starting at the 1024th byte:
+
+`hexyl -r {{1024}}:+{{512}} {{path/to/file}}`