选项

说明

-bd

进入deamon模式

-bi

初始化别名数据库

-bm

从标准输入读取邮件

-bp

列出邮件列表

-bs

独立的smtp模式，从标准输入读取，输出到标准输出

-C

main.cf的位置

-F

指定发送者的全名

-f

指定发送者

-i

忽略只有单独点的行

-q

以给定的时间间隔处理队列中的邮件

[root@localhost ~]# sendmail david                //发送邮件给david，默认的发送者是root

123.

.

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

Delivered-To: david@david.cn

Received: by mailsrv.david.cn (Postfix, from userid 0)

                 id 5B3A7143211; Fri,  5 Oct 2018 21:33:34 +0800 (CST)

Message-Id: <20181005133334.5B3A7143211@mailsrv.david.cn>

Date: Fri,  5 Oct 2018 21:33:29 +0800 (CST)

From: root@david.cn (wejie)

To: undisclosed-recipients:;

123. 

[root@localhost ~]# sendmail -f weijie david               //weijie发送邮件给david

hehe

.

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

[root@localhost ~]# tail /var/spool/mail/david             //查看david邮箱，发送者是魏杰

Delivered-To: david@david.cn

Received: by mailsrv.david.cn (Postfix, from userid 0)

                 id 3544314308F; Fri,  5 Oct 2018 21:37:11 +0800 (CST)

Message-Id: <20181005133711.3544314308F@mailsrv.david.cn>

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

From: weijie@david.cn (wejie)

To: undisclosed-recipients:;

hehe

[root@localhost ~]# mysqlshow -u root -p test wj              //显示数据库test中的表wj的信息

Enter password: 

Database: test  Table: wj

+-------+---------+-------------------+------+-----+---------+-------+---------------------------------+---------+

| Field | Type    | Collation         | Null | Key | Default | Extra | Privileges                      | Comment |

+-------+---------+-------------------+------+-----+---------+-------+---------------------------------+---------+

| id    | int(11) |                   | NO   |     |         |       | select,insert,update,references |         |

| name  | text    | latin1_swedish_ci | NO   |    |         |       | select,insert,update,references |         |

+-------+---------+-------------------+------+-----+---------+-------+---------------------------------+---------+