curl -s при выполнении скрипта

time=$(date +%H)
URL="http://informer.gismeteo.ru/xml/26850_1.xml"
EXEC="/usr/bin/curl -s"
a=`$EXEC $URL`
echo $a | tr "/>" "\n" | grep HEAT | sed -n 1p | sed -e 's/<HEAT //' |\
sed -e 's/"//g' | tr -d "min=" | tr -d "max=" | sed -e 's/ //' |\
sed -e 's/ /../' | gawk '{ print "Темп.",$1,"°C" }'
echo $a | tr "/>" "\n" | grep WIND | sed -n 1p | sed -e 's/<WIND //' |\
sed -e 's/"//g' | tr -d "min=" | tr -d "max=" | sed -e 's/ //' |\
gawk '{ print "Ветер",($1+$2)/2,"м/с" }'
echo $a | tr "/>" "\n" | grep PRESSURE | sed -n 1p | sed -e 's/<PRESSURE //' |\
sed -e 's/"//g' | tr -d "min=" | tr -d "max=" | sed -e 's/ //' |\
gawk '{ print "Давл.",($1+$2)/2,"мм" }'

$ ./script.sh 
: command not found line 2: 
: command not found line 5: 
: is unknown -s
curl: try 'curl --help' or 'curl --manual' for more information