guestfish 修改kvm镜像系统密码方式（qemu）
首先我们遇到问题，自己创建的镜像总是不够完善，但是下载的镜像又不知道密码，很麻烦，就只能想着怎么样才能解决这个问题，到google和百度搜索下，照着这个方式做了，提示用guestfish方式：# guestfish --rw -a /usr/src/ubuntu-20.04-server.raw
Welcome to guestfish, the guest filesystem shell for
editing virtual machine filesystems and disk images.
Type: ‘help’ for help on commands
‘man’ to read the manual
‘quit’ to quit the shell
执行run命令：
><fs> run
◓ 75% ⟦▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒ 100% ⟦▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒⟧ 00:00
><fs>
接下来执行list-filesystems
><fs> list-filesystems
/dev/sda1: ext4
/dev/sda14: unknown
/dev/sda15: vfat
><fs> mount /dev/sda1/
><fs> vi /etc/shadow
><fs> vi /etc/shadow
root:$1$sqYWS/Ap$v9rBnJlIgUpPPXnWfluVX1:18960:0:99999:7:::
><fs>
><fs>
><fs> quit
#
# openssl passwd -1 'linux123!@#'
$1$sqYWS/Ap$v9rBnJlIgUpPPXnWfluVX1
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