Talk: UNIX assignments

Could you give an advise - what's wrong with 14th line?

||||||program begins|||||

!/bin/bash

K="yes" A=0

 while test $K="yes"
 do

adresses="192.168.142.1 mars.tekkom.dk 172.16.4.77" for adress in $adresses

do

if ping -c $adress >/dev/null

 then echo "Ping $adress  succeded."
 else echo "Ping $adress Failed." | $A=`expr $A + 1`

fi

 done

if test $A -ge 3 then $A=0 |

 write astifl ["3 times failed"]|
 mail astifl ["3 times failed"]

fi

sleep 60 done |||||end of program|||||

It's writing smth like this Usage: ping [-LRUbdfnqrvVaA] [-c count] [-i interval] [-w deadline]

           [-p pattern] [-s packetsize] [-t ttl] [-I interface or address]
           [-M mtu discovery hint] [-S sndbuf]
           [ -T timestamp option ] [ -Q tos ] [hop1 ...] destination

./PINGUIN: line 14: 0=1: command not found ping: bad number of packets to transmit. ./PINGUIN: line 14: 0=1: command not found Usage: ping [-LRUbdfnqrvVaA] [-c count] [-i interval] [-w deadline]

           [-p pattern] [-s packetsize] [-t ttl] [-I interface or address]
           [-M mtu discovery hint] [-S sndbuf]
           [ -T timestamp option ] [ -Q tos ] [hop1 ...] destination

./PINGUIN: line 14: 0=1: command not found