var="pattern to find"
string="Full string where the pattern to find is."
echo "$string" | grep "$var"
rc=$?
if [[ $rc = 0 ]];then
echo "I found $var in $string"
fi
var="pattern to find"
string="Full string where the pattern to find is."
echo "$string" | grep "$var"
rc=$?
if [[ $rc = 0 ]];then
echo "I found $var in $string"
fi