MariaDB设置初始化密码及修改密码
方法1： [root@localhost ~]# mysql MariaDB[(none)]> UPDATE mysql.user SET password = PASSWORD(‘newpassword’) WHERE USER = ‘root’; MariaDB[(none)]> FLUSH PRIVILEGES; 方法2： [root@localhost ~]# mysql MariaDB[(none)]> SET password=PASSWORD(‘newpassward’); 方法3： [root@localhost ~]# mysqladmin -u root password ‘newpassword’ 如果root已经设置过密码，采用如下方法 [root@localhost ~]#mysqladmin -u root -p ‘oldpassword’ password ‘newpassword’ https://blog.csdn.net/zwj52pk/article/details/78651647
备份MySQL数据库
mysqldump –single-transaction -h localhost -u root -p[passwd] [dbname] > mysql-backup.bak
Manjaro安装MariaDB
sudo pacman -S mysql Output [dhani@dhani-manjaro ~]$ sudo pacman -S mysql :: There are 2 providers available for mysql: :: Repository extra 1) mariadb :: Repository community 2) percona-server Enter a number (default=1): Type 1 to select mariadb package or simply press Enter. Output: Resolving dependencies… looking for conflicting packages… …
CentOS7 配置阿里云yum源
1、打开centos的yum文件夹 输入命令cd /etc/yum.repos.d/ 2、用wget下载repo文件 输入命令wget http://mirrors.aliyun.com/repo/Centos-7.repo 如果wget命令不生效，说明还没有安装wget工具，输入yum -y install wget 回车进行安装。 当前目录是/etc/yum.repos.d/，刚刚下载的Centos-7.repo也在这个目录上 3、备份系统原来的repo文件 mv CentOS-Base.repo CentOS-Base.repo.bak 即是重命名 CentOS-Base.repo -> CentOS-Base.repo.bak 4、替换系统原理的repo文件 mv Centos-7.repo CentOS-Base.repo 即是重命名 Centos-7.repo -> CentOS-Base.repo 5、执行yum源更新命令 yum clean all yum makecache yum update 依次执行上述三条命令即配置完毕。 https://blog.csdn.net/wade3015/article/details/94494929
electronic-wechat安装
下载 linux-x64.tar.gz 解压 sudo tar zxvf linux-x64.tar.gz 将解压后的文件放在/opt下 sudo mv electronic-wechat-linux-x64/ /opt/electronic-wechat-linux-x64 建终端下的快速启动命令 sudo ln -s /opt/electronic-wechat-linux-x64/electronic-wechat /usr/bin/electronic-wechat 建在Dash Home下的快速启动图标 #Dash Home的图标一般在两个位置 /usr/share/applications #或者 ~/.local/share/applications（用户独立配置的基本都在这里） #只要在一个位置建立图标文件即可 sudo vi /usr/share/applications/electronic-wechat.desktop [Desktop Entry] Encoding=UTF-8 Version=1.0 Type=Application Name=Electronic WeChat Icon=electronic-wechat.png Exec=/opt/electronic-wechat-linux-x64/electronic-wechat StartupNotify=false StartupWMClass=electronic-wechat OnlyShowIn=Unity; X-UnityGenerated=true
关闭WSL BEEP声音
1) Turn off bell for bash vi ~/.inputrc set bell-style none 2) Turn off bell for vi vi ~/.vimrc set visualbell set t_vb= 退出终端，重新登录即可。
WSL更换源
sudo cp /etc/apt/sources.list /etc/apt/sources.list.bak sudo vim /etc/apt/sources.list :%s/archive.ubuntu.com/mirrors.aliyun.com/g :wq sudo apt update
报错
1、从源代码安装报错 aclocal: command not found 方法：sudo pacman -S automake autoconf ./autogen.sh: line 25: intltoolize: command not found 方法：sudo pacman -S intltool 2、CentOS Cannot find a valid baseurl for repo, base_7_x86_6 打开 vi /etc/sysconfig/network-scripts/ifcfg-eth0（不同的系统可能不同），把ONBOOT=no，改为ONBOOT=yes 重启网络：service network restart 3、ImportError cannot import name main 使用pip出现：Traceback (most recent call last): File “/usr/bin/pip3”, line 9, …