Update cheatsheets

linux/iftop

@@ -0,0 +1,33 @@
+---
+syntax: markdown
+tags: [tldr, linux]
+source: https://github.com/tldr-pages/tldr.git
+---
+# iftop
+
+> Show bandwidth usage on an interface by host.
+> More information: <https://manned.org/iftop>.
+
+- Show the bandwidth usage:
+
+`sudo iftop`
+
+- Show the bandwidth usage of a given interface:
+
+`sudo iftop -i {{interface}}`
+
+- Show the bandwidth usage with port information:
+
+`sudo iftop -P`
+
+- Do not show bar graphs of traffic:
+
+`sudo iftop -b`
+
+- Do not look up hostnames:
+
+`sudo iftop -n`
+
+- Display help:
+
+`?`