hexdump, logger, netstat, n, nm, pdfgrep: move to common (#6549)

pages/common/n.md

@@ -0,0 +1,23 @@
+# n
+
+> Tool to manage multiple node versions.
+
+- Install a given version of node. If the version is already installed, it will be activated:
+
+`n {{version}}`
+
+- Display installed versions and interactively activate one of them:
+
+`n`
+
+- Remove a version:
+
+`n rm {{version}}`
+
+- Execute a file with a given version:
+
+`n use {{version}} {{file.js}}`
+
+- Output binary path for a version:
+
+`n bin {{version}}`