How i make this script execute every minute without cron?

Question

I have this:

#!/bin/bash

wlan=`/sbin/ifconfig wlan0 | grep inet\ addr | wc -l`
if [ $wlan -eq 0 ]; then
echo wlan0 not connected, connecting...
echo
sudo ifup wlan0
logger wlan0 reconnected.
echo
echo wlan0 reconnected.
else
echo
echo wlan0 connected. Nothing to do.
fi    

Maybe with sleep command i can make this wait a minute, but i've been reading that there is no "goto" command in shell scripting so i don't know how to jump from the end to the start of scripts so it can repeat the steps forever..

Solution

You are right that there are no goto commands but there are control loops with all the standard features. In your case, you just want to loop indefinitely:

while sleep 1m
do
    your commands here
    ....
done