With a "normal" (I mean full) Linux distro, it works just fine:
sleep $(echo "$[ ($RANDOM % 10 ) ]")
OK, it waits for about 0-9 seconds.
but under OpenWRT [not using
bash, but rather
$ sleep $(echo "$[ ($RANDOM % 9 ) ]") sleep: invalid number '$[' $
$ echo "$[ ($RANDOM % 9 ) ]" $[ ( % 9 ) ] $
So does anyone have a way to generate random numbers under OpenWRT, so I can put it into the "sleep"?