email 通知硬碟狀況

#!/bin/bash
# 2024-04-23
# busybox sendmail
# https://busybox.net/downloads/binaries/1.35.0-x86_64-linux-musl/

mta="busybox sendmail "
S=email.server
f="from<user@email.loc>"
t="to<user@email.loc>"

ema(){ local t;t=${1##*\<};t=${t%%\>};echo $t; }
ips(){ ip a|grep "inet "|grep -v 127.0.0.1|awk '{print $2}'; }
hdds(){ lsblk -l |grep " disk "|awk '{print $1}'; }

s="$(date) <`ips` $(hostname)>"

cat <<EOF | ${mta} -f $(ema ${f}) -t "$(ema ${t})" -S ${S}
Subject: ${s}
CC:
To: ${t}
From: ${f}

$(date)
Disk Usage ====================================================
$(df -h 2>&1)

MD stat =======================================================
$(cat /proc/mdstat)

ZFS stat ======================================================
$(zpool status 2>&1)

HDD Smart stat ================================================
`for i in $(hdds);do echo /dev/${i} @@@@@@@@@;smartctl -H /dev/${i} 2>&1;done`

EOF