Shell Programming and Scripting

1|abc mail|mail subject|mail body
2|def mail|mail subject|def mail body

nof=`wc -l data_1.out | awk ' { print $1 }'`
no_of_lines=`expr $nof - 0`
z=1

while [[ $z -le $no_of_lines ]]
do

cat data_1.out | nawk -v I="$z" 'NR==I { print $0 }' | read id mail_id mail_subject mail_body

printf "From: abc@unix.com
To: ${mail_id}
Subject: IDI : ${mail_subject}
${mail_body} " >> m_file_${id}.out

z=$((z + 1))
done

while IFS="|" read ID MAIL_ID MAIL_SUBJECT MAIL_BODY
do
        cat <<EOF >> m_file_${ID}.out
From: abc@unix.com
To: ${MAIL_ID}
Subject: IDI : ${MAIL_SUBJECT}
${MAIL_BODY}
EOF
done

 
sed 's/|/ /g' data_1.out | awk -v I="$z" 'NR==I { print $0 }' | read id mail_id mail_subject mail_body

while read line
do
echo $line | awk  -F "|" '{ print $0 }' OFS=" " | read id mail_id mail_subject mail_body

printf "From: abc@unix.com
To: ${mail_id}
Subject: IDI : ${mail_subject}
${mail_body} " >> m_file_${id}.out

done<input_file