一些我后写出来的awk脚本

mail.awk

function mailByShell(receiver, sender, subject, content, __ARGVEND__,
                        xhead, xfrom, xmime, xtype, xsubject, sendmail,command)
{
        xhead    = " /usr/bin/formail "
        xfrom    = " -I \"From: " sender "\" "
        xto      = " -I \"To: " receiver "\" "
        xmime    = " -I \"MIME-Version:1.0\" "
        xtype    = " -I \"Content-type:text/html;charset=gb2312\" "
        xsubject = " -I \"Subject:" subject "\" "

        xhead    = xhead "" xfrom "" xto "" xmime "" xtype "" xsubject
        sendmail = " /usr/sbin/sendmail -f " sender " -oi " receiver
        command  = "echo \"" content "\" |" xhead "|" sendmail

        command | getline s
        close(command)
}

function mailByKmail(receiver, sender, subject, content, __ARGVEND__)
{
        # todo
}

function mail(receiver, sender, subject, content, __ARGVEND__)
{
        mailByShell(receiver, sender, subject, content)
}

# test
# END{
#       mail("[e-mail],[e-mail]","[e-mail]","i am test","who am i?")
# }

一些说明:

xto 指定的是邮件终端显示的收件人地址，如果不指定，终端会认为发件人不想公开收件人列表，从而显示成 Undisclosed Recipients ，而真正控制接受人邮件的还是sendmail的-oi参数

如果邮件标题，内容是写死在代码里的，那么接受时是否乱码取决于脚本文件的编码格式和邮件客户端的编码格式，如果一致的话就不会乱码，反之会乱码，那如果内容是从文本文件里读出来的呢？取决于文本文件的编码格式

---

time.awk

function now(format, __ARGVEND__)
{
        if(format == null || format == "")
        {
                format = "%Y-%m-%d %H:%M:%S";
        }

        command = "echo `date +'" format "'` | cat"
        command | getline s
        close(command)
        return s
}

function date()
{
        return now("%-Y%m-%d")
}

function hoursdiff(format,hour)
{
        command = "echo `date -d \"" hour " hours ago \" +'" format "'`"
        command | getline s
        close(command)
        return s
}

#END{
#       print hoursdiff("%Y-%m-%d %H",)
#       print hoursdiff("%H",)
#}