Shell Programming and Scripting

while read line
	do
	    array+=("$line")
	done < "$temporary_file"

 for (( i = 0 ; i < "${#array[@]}"; i++ )); do
    	if grep "@" "${array[$i]}"; then
   		echo "${array[$i]}"
 		fi
    done

$ cat test.sh
FA=("one" "two" "@"  "four" "@" "six")

for i in ${!FA[@]}
do
  if [ '@' = "${FA[$i]}" ]; then
    echo "Found @ at index $i"
  fi
done

$ test.sh
Found @ at index 2
Found @ at index 4

A=("one" "two" "mail@yourhost.com")
B=("one" "two" "three")

for((i=0;i<${#A};i++)) {
   if [[ ${A[i]} = *@* ]]
   then
       echo "A contains @"
   fi
}

for((i=0;i<${#B};i++)) {
   if [[ ${B[i]} = *@* ]]
   then
       echo "B contains @"
   fi
}

A=("one" "two" "mail@yourhost.com")
B=("one" "two" "three")

containsAT() {
    for((i=1;i<=$#;i++)) {
        [[ "${!i}" = *@* ]] && return 0
    }
    return 1
}

if containsAT "${A[@]}"
then
   echo "A contains @"
fi

if containsAT "${B[@]}"
then
   echo "B contains @"
fi

First Last
123 some road
some unit
citySTATEZIP
(111) 222-1111
(111) 222-1112
Fax:(111) 222-1113
user@domain.com
#:123456

while read line
	do
	    array+=("$line")
	done < "$temporary_file"

    echo " array 0 = ${array[0]}"
    echo " array 1 = ${array[1]}"
    echo " array 2 = ${array[2]}"
    echo " array 3 = ${array[3]}"
    echo " array 4 = ${array[4]}"
    echo " array 5 = ${array[5]}"
    echo " array 6 = ${array[6]}"
    echo " array 7 = ${array[7]}"
    echo " array 8 = ${array[8]}"

 array 0 = First Last
 array 1 = 123 some road
 array 2 = some unit
 array 3 = citySTATEZIP
 array 4 = (111) 222-1111
 array 5 = (111) 222-1112
 array 6 = Fax:(111) 222-1113
 array 7 = user@domain.com
 array 8 = #:123456

grep '@' "$temporary_file"

if [ "${x#*@}" = "$x" ]
then    echo 'no @ found'
else    echo '@ found'
fi