如何使用Ubunut20.04根文件系统

rootfs

cd /home/kun/ubuntu_rootfs
⬇️⬇️⬇️⬇️⬇️⬇️⬇️⬇️第一次⬇️⬇️⬇️⬇️⬇️⬇️⬇️⬇️
sudo apt-get install qemu-user-static
⬆️⬆️⬆️⬆️⬆️⬆️⬆️⬆️第一次⬆️⬆️⬆️⬆️⬆️⬆️⬆️⬆️
tar -xzf ubuntu-base-20.04.5-base-arm64.tar.gz -C  ./
sudo cp -b /usr/bin/qemu-aarch64-static ./usr/bin/   (arm64与arm有区别)
sudo cp /etc/resolv.conf ./etc/resolv.conf
sudo cp /home/kun/shao-gaoyan/ubuntu_rootfs/ubuntu/sources.list ./etc/apt

挂载到本地PC

sh ch-mount.sh -m ubuntu_rootfs/

安装常用的命令和软件

export LC_ALL=C.UTF-8
export APT_INSTALL="apt-get install -fy --allow-downgrades"
apt-get -y update
apt-get -f -y upgrade
DEBIAN_FRONTEND=noninteractive apt-get install -y  rsyslog sudo dialog apt-utils
apt-get install -fy --allow-downgrades net-tools ifupdown ethtool iputils-ping udhcpc vim udev network-manager

设置 root 用户密码

passwd root
123456

添加用户

adduser faker

vim /etc/sudoers

设置本机名称和IP地址

echo "Ubuntu" > /etc/hostname
echo "127.0.0.1 localhost" >> /etc/hosts
echo "127.0.1.1 Ubuntu" >> /etc/hosts  

配置网络 dhcp

vim /etc/network/interfaces
⬇️⬇️⬇️⬇️⬇️⬇️⬇️⬇️⬇️⬇️⬇️⬇️⬇️⬇️⬇️⬇️
auto lo
allow-hotplug eth0
iface eth0 inet dhcp
⬆️⬆️⬆️⬆️⬆️⬆️⬆️⬆️⬆️⬆️⬆️⬆️⬆️⬆️⬆️⬆️

上记使用的脚本

 #!/bin/bash
function mnt() {
    echo "MOUNTING"
    sudo mount -t proc /proc ${2}proc
    sudo mount -t sysfs /sys ${2}sys
    sudo mount -o bind /dev ${2}dev
    sudo mount -o bind /dev/pts ${2}dev/pts        
    sudo chroot ${2}
}
function umnt(){
    echo "UNMOUNTING"
    sudo umount ${2}proc
    sudo umount ${2}sys
    sudo umount ${2}dev/pts
    sudo umount ${2}dev
}
if [ "$1" == "-m" ] && [ -n "$2" ] ;
then
    mnt $1 $2
elif [ "$1" == "-u" ] && [ -n "$2" ];
then
    umnt $1 $2
else
    echo ""
    echo "Either 1'st, 2'nd or bothparameters were missing"
    echo ""
    echo "1'st parameter can be one ofthese: -m(mount) OR -u(umount)"
    echo "2'nd parameter is the full pathof rootfs directory(with trailing '/')"
    echo ""
    echo "For example: ch-mount -m/media/sdcard/"
    echo ""
    echo 1st parameter : ${1}
    echo 2nd parameter : ${2}
fi   

⬇️有箭头的特别要注意⬇️

参考

https://doc.embedfire.com/linux/rk356x/build_and_deploy/zh/latest/building_image/ubuntu_rootfs/ubuntu_rootfs.html

有问题随时联系