英语中的缩略词有哪些

英语中的缩略词有哪些,第1张

其实还有很多:MTV(Music TV) ;TM(trademark已经注册的商标);NBA(National Basketball Association);CACC(Civil Aviation Administration of China)中国民航;SOS save our souls
VIP Very important person
TV VCD CAN UK USA
BBC=British Broadcasting Corporation英国广播公司
UN=United Nations联合国
DIY=Do It Yourself自己动手做
WTO=World Trade Organization世界贸易组织
HK=Hongkong香港
ASP常见缩略词全写及中文含义
>>你进入海词网首页,直接点击查词,下一页面中点“缩略词”就可以看到缩写单词集合了。左边缩写分类的第一个就是你要的“常用词汇”,共有三千多条。
另外海词还将缩略词分为生物科学、电子电工、化学化工、社科总论、军事政治、文化教育、历史等28个大类,以后你有相关需要也可以按图索骥。

>在Linux Ubuntu中安装MySQL数据库
#安装MySQL服务器
~ sudo apt-get install mysql-server
安装过程会d出提示框,输入root用户的密码,我在这里设置密码为mysql。
安装完成后,MySQL服务器会自动启动,我们检查MySQL服务器程序
# 检查MySQL服务器系统进程
~ ps -aux|grep mysql
mysql 3205 20 05 549896 44092 Ssl 20:10 0:00 /usr/sbin/mysqld
conan 3360 00 00 11064 928 pts/0 S+ 20:10 0:00 grep --color=auto mysql
# 检查MySQL服务器占用端口
~ netstat -nlt|grep 3306
tcp 0 0 127001:3306 0000: LISTEN
# 通过启动命令检查MySQL服务器状态
~ sudo /etc/initd/mysql status
Rather than invoking init scripts through /etc/initd, use the service(8)
utility, eg service mysql status
Since the script you are attempting to invoke has been converted to an
Upstart job, you may also use the status(8) utility, eg status mysql
mysql start/running, process 3205
# 通过系统服务命令检查MySQL服务器状态
~ service mysql status
mysql start/running, process 3205
3 通过命令行客户端访问MySQL
安装MySQL服务器,会自动地一起安装MySQL命令行客户端程序。
在本机输入mysql命令就可以启动,客户端程序访问MySQL服务器。
~ mysql
Welcome to the MySQL monitor Commands end with ; or \g
Your MySQL connection id is 42
Server version: 5535-0ubuntu012042 (Ubuntu)
Copyright (c) 2000, 2013, Oracle and/or its affiliates All rights reserved
Oracle is a registered trademark of Oracle Corporation and/or its
affiliates Other names may be trademarks of their respective
owners
Type 'help;' or '\h' for help Type '\c' to clear the current input statement
mysql>
使用户名和密码,登陆服务器
~ mysql -uroot -p
Enter password:
Welcome to the MySQL monitor Commands end with ; or \g
Your MySQL connection id is 37
Server version: 5535-0ubuntu012042 (Ubuntu)
Copyright (c) 2000, 2013, Oracle and/or its affiliates All rights reserved
Oracle is a registered trademark of Oracle Corporation and/or its
affiliates Other names may be trademarks of their respective
owners
Type 'help;' or '\h' for help Type '\c' to clear the current input statement
mysql>

1Linux下生成密钥
ssh-keygen的命令手册,通过”man ssh-keygen“命令:
通过命令”ssh-keygen -t rsa“
生成之后会在用户的根目录生成一个 “ssh”的文件夹
进入“ssh”会生成以下几个文件
authorized_keys:存放远程免密登录的公钥,主要通过这个文件记录多台机器的公钥
id_rsa : 生成的私钥文件
id_rsapub :生成的公钥文件
know_hosts : 已知的主机公钥清单
如果希望ssh公钥生效需满足至少下面两个条件:
1) ssh目录的权限必须是700
2) ssh/authorized_keys文件权限必须是600
2远程免密登录
原理图:
常用以下几种方法:
21 通过ssh-copy-id的方式
命令: ssh-copy-id -i ~/ssh/id_rsaput <romte_ip>
举例:
[root@test ssh]# ssh-copy-id -i ~/ssh/id_rsapub 19216891135
root@19216891135's password:
Now try logging into the machine, with "ssh '19216891135'", andcheck in:
ssh/authorized_keys
to make sure we haven't added extra keys that you weren't expecting
[root@test ssh]# ssh root@19216891135
Last login: Mon Oct 10 01:25:49 2016 from 19216891133
[root@localhost ~]#
常见错误:
[root@test ~]# ssh-copy-id -i~/ssh/id_rsapub 19216891135
-bash: ssh-copy-id: command not found //提示命令不存在
解决办法:yum -y installopenssh-clients
22 通过scp将内容写到对方的文件中
命令:scp -p~/ssh/id_rsapub root@<remote_ip>:/root/ssh/authorized_keys
举例:
[root@test ssh]# scp -p ~/ssh/id_rsapubroot@19216891135:/root/ssh/authorized_keys
root@19216891135's password:
id_rsapub 100% 408 04KB/s 00:00
[root@test ssh]#
[root@test ssh]#
[root@test ssh]#
[root@test ssh]# ssh root@19216891135
Last login: Mon Oct 10 01:27:02 2016 from 19216891133
[root@localhost ~]#
也可以分为两步 *** 作:
$ scp ~/ssh/id_rsapubroot@<remote_ip>:pub_key //将文件拷贝至远程服务器
$ cat ~/pub_key>>~/ssh/authorized_keys //将内容追加到authorized_keys文件中,不过要登录远程服务器来执行这条命令
23 通过Ansible实现批量免密
231 将需要做免密 *** 作的机器hosts添加到/etc/ansible/hosts下:
[Avoid close]
19216891132
19216891133
19216891134
232 执行命令进行免密 *** 作
ansible<groupname> -m authorized_key -a "user=root key='{{lookup('file','/root/ssh/id_rsapub') }}'" -k
示例:
[root@test sshpass-105]# ansible test -m authorized_key -a"user=root key='{{ lookup('file','/root/ssh/id_rsapub') }}'" -k
SSH password: ----->输入密码
19216891135 | success >> {
"changed": true,
"key": "ssh-rsa AAAAB3NzaC1yc2EAAAABIwAAAQEArZI4kxlYuw7j1nt5ueIpTPWfGBJoZ8Mb02OJHR8yGW7A3izwT3/uhkK7RkaGavBbAlprp5bxp3i0TyNxa/apBQG5NiqhYO8YCuiGYGsQAGwZCBlNLF3gq1/18B6FV5moE/8yTbFA4dBQahdtVP PejLlSAbb5ZoGK8AtLlcRq49IENoXB99tnFVn3gMM0aX24ido1ZF9RfRWzfYF7bVsLsrIiMPmVNe5KaGL9kZ0svzoZ708yjWQQCEYWp0m+sODbtGPC34HMGAHjFlsC/SJffLuT/ug/hhCJUYeExHIkJF8OyvfC6DeF7ArI6zdKER7D8M0SMWQmpKUltj2nltuv3w== root@localhostlocaldomain",
"key_options": null,
"keyfile": "/root/ssh/authorized_keys",
"manage_dir": true,
"path": null,
"state": "present",
"unique": false,
"user": "root"
}
[root@test sshpass-105]#
24 手工复制粘贴的方式
将本地id_rsapub文件的内容拷贝至远程服务器的~/ssh/authorized_keys文件中

你好,首先机箱从外形上分为立式和卧式两种;从结构上分为AT、ATX、Micro ATX、NLX等类型,现在市场上基上都是以ATX为主;从散热上分为38℃机箱和非38℃机箱,但现在绝大多数都是38℃机箱;从功能上分为服务器机箱和普通机箱,服务器机箱的材质、散热、抗碰击等性能均优于普通机箱,一般家庭和企业用户普通的机箱就够用了。希望我的回答可以帮助你,谢谢!,希望对你有帮助!


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