rsync doesn't run when from a bash script

Question

I have wakeup script that runs when the system wakes up (Arch linux)

$ cat /usr/lib/pm-utils/sleep.d/example

#!/bin/bash
 case "$1" in
 resume)
 echo "hey I just got resumed!"
/usr/bin/bash /home/user/bin/wakeup_script
 esac

my wakeup_script

$ cat bin/wakeup_script

#!/bin/bash
/usr/bin/touch /home/user/testwake.txt
/usr/bin/rsync -vaz [email protected]:/home/user/downloads/test.txt /mnt/data/
/home/user/bin/mnt d

you can see that the script "wakeup_script" contains three bash script. When the system wakes up, the first and third script runs very well but rsync never worked, I tried scp, it doesn't work again! what's wrong here?

when I execute the same "wakeup_script" in a shell, the rsync does work but it doesn't get executed when the system wakes up!!

$ /usr/bin/bash /home/user/bin/wakeup_script

Answer 1

In /usr/lib/pm-utils/sleep.d/example:

after the line:

#!/bin/bash

add the line:

sleep 15

This will give 15 seconds for network interfaces to become available after resuming.