A bash script to temporarily slow down your intertubes on MacOS.

README.md

slow-it-down

Simulate a slow network connection with one command.

Turn on:

$> sudo ./slow-it-down
Your tubes are now filled with molasses

Oh snap, the internet is like 1998, turn it off:

$> sudo ./slow-it-down
Your tubes will be unclogged:
Are you sure? [yn] y

Flushed all rules.

slow-it-down

#!/bin/sh

if [[ "$1" == -h* ]]; then
   echo "Slows down your internet connection to approx 800kbps."
   echo "Usage: sudo $0"
   echo "  Each invocation toggles the state of the slowdown on or off."
   echo "Note: you'll likely have to sudo this this script"
   exit 1
fi

output=$(ipfw show 2>&1)
if [ "$?" != 0 ]; then
   echo "Got this error when running ipfw:"
   echo $output
   echo "You likely have to use sudo this script: sudo $0"
   exit 1
fi

echo "$output" | grep 00100 >/dev/null
found=$?
if [ "$found" = 0 ]; then
   echo "Your tubes will be unclogged:"
   ipfw flush
else
   echo "Your tubes are now filled with molasses"
   ipfw add pipe 1 all from any to any >/dev/null
   ipfw pipe 1 config bw 800Kbit/s >/dev/null
fi