Move pages under tldr, lint run.sh, update docs

tldr/linux/arpspoof

@@ -0,0 +1,21 @@
+---
+syntax: markdown
+tags: [tldr, linux]
+source: https://github.com/tldr-pages/tldr.git
+---
+# arpspoof
+
+> Forge ARP replies to intercept packets.
+> More information: <https://monkey.org/~dugsong/dsniff>.
+
+- Poison all hosts to intercept packets on [i]nterface for the host:
+
+`sudo arpspoof -i {{wlan0}} {{host_ip}}`
+
+- Poison [t]arget to intercept packets on [i]nterface for the host:
+
+`sudo arpspoof -i {{wlan0}} -t {{target_ip}} {{host_ip}}`
+
+- Poison both [t]arget and host to intercept packets on [i]nterface for the host:
+
+`sudo arpspoof -i {{wlan0}} -r -t {{target_ip}} {{host_ip}}`