Bash script to autostart dropbox daemon if it exists with a delay set in seconds. Usage $ dropbox <time in seconds>.

dropbox-autostart.sh

#!/bin/bash

## How long to delay the start of Dropbox
DELAY=$1
## If no delay is set default to 10 seconds
: ${DELAY:=10} 

## If dropbox exists then start it
if type "dropbox" > /dev/null; then
    echo "Starting Dropbox in ${DELAY} seconds..."
    sleep $DELAY
    dropbox start -i
fi