软件下载加速(相关教程点这里)
备份
sudo cp /etc/apt/sources.list /etc/apt/sources.list.bak
修改
vi /etc/apt/sources.list
删除全部文件(按住d),修改为如下
deb-src http://archive.ubuntu.com/ubuntu xenial main restricted
deb http://mirrors.aliyun.com/ubuntu/ xenial main restricted
deb-src http://mirrors.aliyun.com/ubuntu/ xenial main restricted multiverse universe
deb http://mirrors.aliyun.com/ubuntu/ xenial-updates main restricted
deb-src http://mirrors.aliyun.com/ubuntu/ xenial-updates main restricted multiverse universe
deb http://mirrors.aliyun.com/ubuntu/ xenial universe
deb http://mirrors.aliyun.com/ubuntu/ xenial-updates universe
deb http://mirrors.aliyun.com/ubuntu/ xenial multiverse
deb http://mirrors.aliyun.com/ubuntu/ xenial-updates multiverse
deb http://mirrors.aliyun.com/ubuntu/ xenial-backports main restricted universe multiverse
deb-src http://mirrors.aliyun.com/ubuntu/ xenial-backports main restricted universe multiverse
deb http://archive.canonical.com/ubuntu xenial partner
deb-src http://archive.canonical.com/ubuntu xenial partner
deb http://mirrors.aliyun.com/ubuntu/ xenial-security main restricted
deb-src http://mirrors.aliyun.com/ubuntu/ xenial-security main restricted multiverse universe
deb http://mirrors.aliyun.com/ubuntu/ xenial-security universe
deb http://mirrors.aliyun.com/ubuntu/ xenial-security multiverse
更新
sudo apt-get update
- 删除软件包括依赖的软件
sudo apt-get autoremove 软件名
- ubuntu获得root权限实现ftp登录和实现ftp上传
vim /etc/ssh/sshd_config
修改PermitRootLogin prohibit-password
PermitRootLogin prohibit-password将 prohibit-password改为yes;
重启ssh服务
/etc/init.d/ssh restart
- 文件更改操作权限
组增加一个可执行权限
chmod +x shell.sh
- 文件夹修改操作权限
赋予zhang用户和zhang组可以写test文件夹的权限
chown zhang:zhang test/
- 权限操作,数字法
权限数字表示
r,w,x分别代表什么数字
?
r,4
w,2
x,1
file1的权限是741
请问代表什么意思
?
所有者权限,可读4可写2可执行1
所属组权限,可读4
其他人权限,可执行1
赋予全部权限
chmod 777 file1
- 删除文件夹和以下目录
先进入上级目录
rm -fr 要删除的目录/
安装jre、tomcat、mysql
如果是用虚拟机安装linux,可以克隆一个干净的linux系统,选择创建链接克隆,当然也可以完整克隆
安装jre
- 因为阿里云是运行环境,不是开发环境,所以只要下载jre就可以,jre1.8下载jre-8u231-linux-x64.tar.gz 地址:
https://www.oracle.com/technetwork/java/javase/downloads/jre8-downloads-2133155.html - 教程https://www.bilibili.com/video/av36042649/?p=19
系统环境变量配置vi /etc/environment
export JAVA_HOME=/usr/local/java/jre1.8.0_231
export JRE_HOME=/usr/local/java/jre1.8.0_231
export CLASSPATH=$CLASSPATH:$JAVA_HOME/Lib:$JAVA_HOME/jre/lib
用户环境变量vi /etc/profile,在fi和if之间插入
export JAVA_HOME=/usr/local/java/jre1.8.0_231
export JRE_HOME=/usr/local/java/jre1.8.0_231
export CLASSPATH=$CLASSPATH:$JAVA_HOME/Lib:$JAVA_HOME/jre/lib
export PATH=$JAVA_HOME/bin:$JAVA_HOME/jre/bin:$PATH:$HOME/bin
环境变量生效
source /etc/profile
测试是否安装jre成功
java -version
安装tomcat
- 下载
- 启动tomcat
cd /usr/local/apache-tomcat-8.5.47/bin
./startup.sh
- 配置端口
cd /usr/local/apache-tomcat-8.5.47/conf
vi server.xml
mysql
- 安装mysql
apt-get install mysql-server
- 配置mysql
cd /etc/mysql/mysql.conf.d
vim mysqld.cnf
- 修改配置能够远程登录数据库
cd /etc/mysql/mysql.conf.d
vim mysqld.cnf
注释掉#bind-address = 127.0.0.1
重启mysql
service mysql restart
本地登录mysql,授权root用户允许所有人连接
mysql -uroot -p
授权
grant all privileges on *.* to 'root'@'%' identified by 'root密码';