物理机新建xubuntu一些问题

  • 无线网卡驱动问题 – 无法显示wifi

    解决方法: https://jingyan.baidu.com/article/ca2d939dd4f1b4eb6c31ce09.html

    PS: 下载需要联网,可以使用手机usb共享网络。

  • 新建用户密码过于简单

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    # 去掉Cracklib password strength checking 
    sudo pam-auth-update
    
  • bash控制台不变颜色,删除~/.bash_profile文件或在里面. .bashrc

  • GRUB多系统启动顺序修改

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    cd /etc/default/grub.d
    # 修改启动顺序,可能需要记得启动界面顺序修改
    sudo vi grub
    # 生效
    sudo update-grub
    
  • 修改系统生成的目录的名称

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    # 直接看修改
    vim .config/user-dirs.dirs
    
  • 增加systemd启动服务

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    sudo cp frpc.service /lib/systemd/system/sudo 
    # 开机启动
    sudo systemctl enable frpc.service
    
  • 设置Python

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    sudo update-alternatives --install /usr/bin/Python Python /usr/bin/Python3 150
    sudo update-alternatives --install /usr/bin/pip pip /usr/bin/pip3 150
    
    # 修改安装源(不存在则新建)
    vim .pip/pip.conf
    [global] 
    index-url=http://mirrors.aliyun.com/pypi/simple 
    [install] 
    trusted-host=mirrors.aliyun.com
    
  • 修改docker相关配置

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    # 修改下载源(不存在则新建)
    sudo vim /etc/docker/daemon.json
    {
        "registry-mirrors": [
            "https://2gpinm2f.mirror.aliyuncs.com"
        ]
    }
    
    # docker ps报权限问题
    # 增加用户组
    sudo usermod -aG docker able
    sudo groupadd docker
    sudo gpasswd -a able docker
    newgrp docker
    
    # docker 使用volume权限问题
    chmod a+w xxx.dir
    
  • unlimit无权限

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    # 修改pam, 末尾增加
    sudo /etc/pam.d/common-session
    session required pam_limits.so
    
    # 修改系统配置, 末尾增加,重启或sysctl -p生效
    sudo vim /etc/sysctl.conf
    fs.file-max=1024000000
    fs.nr_open=1024000000
    
    # 末尾增加, 单加这个,此方式不生效,需要加
    sudo vim /etc/security/limits.conf
    able              soft    nofile 1024000000
    able              hard    nofile 1024000000
    able              soft    nproc  1024000000 
    able              hard    nproc  1024000000
    
  • root 修改可接受简单密码 一般的错误提示为:

Resolve and Remove “BAD PASSWORD: it is based on a dictionary word “in Linux

If you know what you’re doing and want to use weak password in Linux (CentOS, RedHat … etc), follow the steps below.

  1. vi /etc/pam.d/system-auth as root.
  2. Look for the following two lines:

password requisite pam_cracklib.so try_first_pass retry=3 password sufficient pam_unix.so md5 shadow nullok try_first_pass use_authtok

按提示打开文件:

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1. password    requisite     pam_cracklib.so try_first_pass retry=3
2. password    sufficient    pam_unix.so md5 shadow nullok try_first_pass use_authtok
3. Comment out the first of the two lines:   注释掉此行

#password    requisite     pam_cracklib.so try_first_pass retry=3

4. Remove use_authtok on the second line. Otherwise you’ll get “passwd: Authentication infORMation cannot be recovered” error.

删除掉 "use_authtok “从第二行,否则你会得到"passwd : Authentication infORMation canot be recovered "的错误提示

password    sufficient    pam_unix.so md5 shadow nullok try_first_pass

5. That’s it. Try changing your password again.

搞定,再次尝试修改密码()