十一月, 2014 | Tech && Test

Linux – 用md5sum校验文件

用tar打包文件后传到另一服务器上解压报错中断。

于是对比两个文件的MD5。先用md5sum分别计算两个服务器文件的MD5：

[root@VM_centos ~]# md5sum test.tar.gz > test_md5.txt
[root@VM_centos ~]# cat test_md5.txt
fa1b8d4dbbc9712f667748cadefe681a  test.tar.gz

[root@VM_centos ~]# md5sum test.tar.gz > test_md5.txt

[root@VM_centos ~]# cat test_md5.txt

fa1b8d4dbbc9712f667748cadefe681a test.tar.gz

然后再对比，果，然，不，一，样。

END。

Posted on: 2014 年 11 月 07 日 2014 年 11 月 07 日
Author: straul
Categories: Linux, 技术笔记
Tags: Linux
Leave a comment: Linux – 用md5sum校验文件

邮件服务 – CentOS 搭建邮件服务

那么接下来呢，想在服务器上收发邮件。“收”这个操作先不管，首先做到能“发”。

照旧，原文在此。

首先，安装服务。

1、这里说的发送邮件，是要用到“sendmail”，所以先检查是否安装。

2、没安装的话，就装。

[root@VM_centos ~]# yum -y install sendmail
Loaded plugins: fastestmirror, security
Determining fastest mirrors
centosplus                                                                                                                                                                                                | 3.4 kB     00:00     
contrib                                                                                                                                                                                                   | 2.9 kB     00:00     
cr                                                                                                                                                                                                        | 2.9 kB     00:00     
epel                                                                                                                                                                                                      | 4.4 kB     00:00     
extras                                                                                                                                                                                                    | 3.3 kB     00:00     
fasttrack                                                                                                                                                                                                 | 3.4 kB     00:00     
os                                                                                                                                                                                                        | 3.7 kB     00:00     
rpmforge                                                                                                                                                                                                  | 1.9 kB     00:00     
updates                                                                                                                                                                                                   | 3.4 kB     00:00     
Setting up Install Process
Resolving Dependencies
--> Running transaction check
---> Package sendmail.x86_64 0:8.14.4-8.el6 will be installed
--> Processing Dependency: procmail for package: sendmail-8.14.4-8.el6.x86_64
--> Processing Dependency: libhesiod.so.0()(64bit) for package: sendmail-8.14.4-8.el6.x86_64
--> Running transaction check
---> Package hesiod.x86_64 0:3.1.0-19.el6 will be installed
---> Package procmail.x86_64 0:3.22-25.1.el6_5.1 will be installed
--> Finished Dependency Resolution

Dependencies Resolved

=================================================================================================================================================================================================================================
 Package                                              Arch                                               Version                                                       Repository                                           Size
=================================================================================================================================================================================================================================
Installing:
 sendmail                                             x86_64                                             8.14.4-8.el6                                                  os                                                  717 k
Installing for dependencies:
 hesiod                                               x86_64                                             3.1.0-19.el6                                                  os                                                   20 k
 procmail                                             x86_64                                             3.22-25.1.el6_5.1                                             updates                                             162 k

Transaction Summary
=================================================================================================================================================================================================================================
Install       3 Package(s)

Total download size: 900 k
Installed size: 1.9 M
Downloading Packages:
(1/3): hesiod-3.1.0-19.el6.x86_64.rpm                                                                                                                                                                     |  20 kB     00:00     
(2/3): procmail-3.22-25.1.el6_5.1.x86_64.rpm                                                                                                                                                              | 162 kB     00:00     
(3/3): sendmail-8.14.4-8.el6.x86_64.rpm                                                                                                                                                                   | 717 kB     00:00     
---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Total                                                                                                                                                                                             14 MB/s | 900 kB     00:00     
Running rpm_check_debug
Running Transaction Test
Transaction Test Succeeded
Running Transaction
  Installing : hesiod-3.1.0-19.el6.x86_64                                                                                                                                                                                    1/3 
/sbin/ldconfig: /usr/lib/libmysqlclient.so.18 is not a symbolic link

  Installing : procmail-3.22-25.1.el6_5.1.x86_64                                                                                                                                                                             2/3 
  Installing : sendmail-8.14.4-8.el6.x86_64                                                                                                                                                                                  3/3 
  Verifying  : procmail-3.22-25.1.el6_5.1.x86_64                                                                                                                                                                             1/3 
  Verifying  : hesiod-3.1.0-19.el6.x86_64                                                                                                                                                                                    2/3 
  Verifying  : sendmail-8.14.4-8.el6.x86_64                                                                                                                                                                                  3/3 

Installed:
  sendmail.x86_64 0:8.14.4-8.el6                                                                                                                                                                                                 

Dependency Installed:
  hesiod.x86_64 0:3.1.0-19.el6                                                                                procmail.x86_64 0:3.22-25.1.el6_5.1                                                                               

...
Complete!

1	[root@VM_centos ~]# yum -y install sendmail

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Posted on: 2014 年 11 月 02 日 2014 年 11 月 05 日
Author: straul
Categories: Linux, 技术笔记
Tags: centos, Linux, 邮件
Leave a comment: 邮件服务 – CentOS 搭建邮件服务

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