Shell Programming and Scripting

#!/bin/bash
./extract_email.pl output2 > database
while read -r COL1
    X=$(grep $COL1 database )
    if [[ -z $X ]] ; then
        echo "false"
        exit
else 
do
sed -n '1,2p' /var/test/test.txt > $COL1
sed -e '1,2d' /var/test/test.txt > /var/test/test2.txt
mail -s "mail subject is here" -a "From: info@mymail.net" $COL1 < $COL1
mv $COL1 /var/test/database_pool/
done < database
rm output*
rm *.host
exit 0

X=$(grep $COL1 database )

done < database

#!/bin/bash
./extract_email.pl output2 > database2
while read -r COL1
    X=$(grep $COL1 database )
    if [[ -z $X ]] ; then
        echo "false"
        exit
else 
do
sed -n '1,2p' /var/test/test.txt > $COL1
sed -e '1,2d' /var/test/test.txt > /var/test/test2.txt
mail -s "mail subject is here" -a "From: info@mymail.net" $COL1 < $COL1
mv $COL1 /var/test/database_pool/
done < database2
rm output*
rm *.host
exit 0

grep -x -f

#!/bin/bash
cd /home/info/Maildir/new/
sed -n '/Return/p' *.host > output
sed 's/</ /' output > output1
sed 's/>/ /' output1 > output2
./extract_email.pl output2 > database
diff -U $(wc -l < database) database emails | grep '^-' | sed 's/^-//g' > database2
while read -r COL1
        do
mail -s "mail subject is here" -a "From: info@myemail.net" $COL1 < $COL1
done < database2
exit 0

sed -n '/Return/{ s/<|>/ /g; p}' *.host > output