[Bash] mail2me: send email with attachments from terminal

This is mutt version. A "mail" version is here.

#!/bin/bash # send files to an email account as the attachment(s) # usage: #           mail2me email -s 'YourSubject'  YourAttachments #           http://scriptdemo.blogspot.com function isEmail() {    cEmail=`echo $1 | grep "^[a-zA-Z]\+\([._][a-zA-Z0-9]\+\)*@\([a-zA-Z0-9]\+\.\)\+[a-zA-Z]\{2,3\}$"`    if [ ${#cEmail} -gt 0 ]; then       echo "true"    else       echo "false"    fi } function isServerOn() {   myS=$1   myp=`ping -c 2 ${myS} 2>&1 | grep "% packet" | awk '{print $6*100}'`   if [ ${#myp} -eq 0 ]; then      echo "-1" #server: ${myS} is not valid   elif [ ${myp} -eq 100 ]; then      echo "0" #server: ${myS} is off   else      echo "1" #server: ${myS} is $(( 100 - ${myp}))% response   fi } if [ $# -le 1 ]; then    echo "usage: mail2me email -s Subject file1 [file2] ..."    exit fi #check email targetEmail=$1 isValidEmail=`isEmail ${targetEmail}` [ ${isValidEmail} == "false" ] && echo "${targetEmail} is not a valid email address!!!" && exit #check smtp server smtpS=`echo ${targetEmail} | awk -F\@ '{print $2}'` smtpS="smtp.${smtpS}" isOnline=`isServerOn ${smtpS}` if [ ${isOnline} == "-1" ]; then      echo "SMTP server: ${smtpS} is invalid. STOP" && exit elif [ ${isOnline} == "0" ]; then      echo "SMTP server: ${smtpS} is offline. STOP" && exit fi #send email numF=0 nf=2 isDebug=0 shift #shift the email while [ $# -ge 1 ] do     case $1 in        -s|-S)          mysubj=$2          shift; shift;          ;;        -d|-D)          isDebug=1          shift          ;;        *)          if [ -f ${tmpfn} ]; then             myfile[${numF}]=$1             numF=`expr ${numF} + 1`          else             echo "$1 is not found!"          fi          shift          ;;      esac done if [ ${numF} -eq 1 ]; then    [ ${#mysubj} -eq 0 ] && mysubj="[script] ${myfile[0]}" elif [ ${numF} -gt 1 ]; then    [ ${#mysubj} -eq 0 ] && mysubj="[script] backup ${myfile[0]} etc." else    echo "no file is found!!!" && exit fi if [ ${isDebug} -eq 1 ]; then    echo "echo \"The attachment is ${myfile[*]} sent by `whoami` from `hostname`\" | mutt -s '${mysubj}' -a ${myfile[*]} -- ${targetEmail}" else    echo "The attachment is ${myfile[*]} sent by `whoami` from `hostname` " | mutt -s "${mysubj}" -a ${myfile[*]} -- ${targetEmail} fi