A, Apache2 web server is installed:
It can update server (optional)
1, sudo apt update # Get the latest Resource Kit
2, sudo apt upgrade # All this software update
3, sudo apt dist-upgrade # software update system of the present
This step may occur the following problems can arise if not ignored:
Could not get lock /var/lib/dpkg/lock
Output similar to the following error occurs when you run sudo apt-get XXX this command:
Could not get lock /var/lib/dpkg/lock - open (11 Resource temporarily unavailable)
Unable to lock the administration directory (/var/lib/dpkg/) is another process using it?
或者：
Could not ge lock /var/lib/apt/lists/lock - open (11: Resource temporarily unavailable)
Unable to lock directory /var/lib/apt/lists/
Could not get lock /var/lib/dpkg/lock - open (11: Resource temporarily unavailable)
Unable to lock the administration directory (/var/lib/dpkg/), is another process using it?
Explain
this problem occurs because there is a thread in the use of apt-get download operation. But the strange thing is, I just do not find other uses apt-get command terminal interface. Methods So how to solve this problem, do you want to restart the computer, restart the computer that can solve this problem, but I am going to teach you, it is the real solution.
Solution
to search for all running threads
ps aux | grep -i apt
You'll get something like the following output:
root 752 0.0 0.0 4508 1628 ? Ss 01:13 0:00 /bin/sh /usr/lib/apt/apt.systemd.daily
_apt 2098 0.1 0.1 49572 5524 ? S 01:18 0:06 /usr/lib/apt/methods/http
aobo 4425 0.0 0.0 18484 980 pts/1 S+ 02:13 0:00 grep --color=auto apt
The first two is the thread number (kill processnumber). We will be apt related processes to close out the need to use sudo permissions:
Sudo the kill ProcessNumber #
sudo 2098 the kill
if there _apt thread and then under examination:
ps aux | grep -i apt
Prompt, the following operations are carried out by the root authority
# Install Apache
sudo apt install apache2
.... skip the intermediate information
# Check for open Apache, usually installed after the meeting turned on by default.
systemctl status apache2
# Open, close and restart the Apache server
1, systemctl start apache2 # open
2、systemctl stop apache2 # 关闭
3、systemctl restart apache2 # 重启
二、数据库的安装，这里安装MySQL5.7:
# 安装MySQL：
sudo apt install mysql-server-5.7 (这里直接指定版本即可)
sudo service mysql restart/start/stop
就这两个命令就安装好了，可是我在安装过程中并没有出现要我写用户名和密码的地方，我一脸懵逼，
完成后在终端输入mysql -u root -p之后，要求我输入密码，可是我并不知道密码，随便输入之后，
ERROR 1045 (28000): Access denied for user 'root'@'localhost' (using password: YES)
打开一个文件
sudo vim /etc/mysql/debian.cnf
如下
密码会随即给一个很复杂的，这个时候，要进入MySQL的话，就是需要在终端把root更改为debian-sys-maint，如下代码
mysql -u debian-sys-maint -p AiV62RHXR8cqZROK
这之后就要修改密码了，毕竟密码太难记。
mysql> update mysql.user set authentication_string=password('password') where user='root'and Host = 'localhost';
如果出现下面的提示则成功
成功之后重启mysql服务即可使用root账号进行登录
通过下列命令安装PHP 7.2
安装composer
因为之前我门已经安装过了php的部分扩展所以接下来我们只用安装 curl git unzip这三个东西就行了
如果没有安装，需要安装过php的扩展后再来安装compioser
sudo apt install curl git unzip