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说明

[root@localhost ~]# mail -u david           //指定用户，首先得到邮件列表

Heirloom Mail version 12.4 7/29/08.  Type ? for help.

"/var/mail/david": 10 messages 3 new

    1 root                  Thu Aug 16 17:07  21/692   "test"

    2 root                  Thu Aug 16 17:08  20/631   "test"

    3 root                  Thu Aug 16 17:10  20/602   "test"

    4 root                  Fri Aug 17 08:15  20/570   "test3"

    5 root                  Fri Aug 17 09:46  25/668   "test04"

    6 root                  Tue Aug 21 09:14  20/609   "test04"

    7 root                  Tue Aug 21 09:15  20/666   "test05"

>N  8 wejie                 Fri Oct  5 21:32 13/403   

 N  9 wejie                 Fri Oct  5 21:33 13/400   

 N 10 wejie                 Fri Oct  5 21:37  13/406   

& 10                //此处输入邮件编号，可以得到具体邮件内容

Message 10:

From weijie@david.cn  Fri Oct  5 21:37:11 2018

Return-Path: <weijie@david.cn>

X-Original-To: david

Delivered-To: david@david.cn

Date: Fri,  5 Oct 2018 21:37:07 +0800 (CST)

From: weijie@david.cn (wejie)

To: undisclosed-recipients:;

Status: RO

hehe

[root@localhost ~]# mail -r david weijie                  //发送邮件给weijie，发信人david

Subject: test

123

.

EOT

You have new mail in /var/spool/mail/root

[root@localhost ~]# tail /var/spool/mail/weijie          //查看weijie邮箱，收到david邮件

To: weijie@david.cn

Subject: test

User-Agent: Heirloom mailx 12.4 7/29/08

MIME-Version: 1.0

Content-Type: text/plain; charset=us-ascii

Content-Transfer-Encoding: 7bit

Message-Id: <20181005141158.B5D4914321B@mailsrv.david.cn>

123