利用Here Document结合Sendmail发外网邮件

#!/bin/bash

FROMUSER="Anshion"
TOUSER=[e-mail]
CCUSER=[e-mail]
RESULT=/tmp/.licresult
NOWTIME=$(date +%s)

sqlite3 license.db "select user,serial,startime,endtime from ipwall_license" > $RESULT

OIFS=$IFS
IFS='|'
while read NAME SERIAL STARTIME ENDTIME;do
    TIME=$((ENDTIME-NOWTIME))
    [ "$TIME" -le 1 ] && continue
    if [ "$((TIME/3600))" -le 48 ];then
        STARTIME=$(date -d "@$STARTIME" +%Y-%m-%d)
        ENDTIME=$(date -d "@$ENDTIME" +%Y-%m-%d)
        CONTENT="$CONTENT
$NAME   $SERIAL   $STARTIME   $ENDTIME"
    fi
done < $RESULT
IFS=$OIFS

/usr/sbin/sendmail -f [e-mail] -t <<EOF
Form: $FROMUSER
To: <$TOUSER>
Cc: <$CCUSER>
Subject:License will expire
---------------------------------

Warning: The following license is about to

$CONTENT


---------------------------------
EOF

rm -f $RESULT