Shulou(Shulou.com)06/02 Report--

Libguestfs modifies qcow2 image file

Apt install libguestfs-tools

# guestfish-a / home/lsz/centos7.qcow2

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

> run

100% ⟦▒ ▒⟧ 00:00

> list-filesystems

/ dev/sda1: xfs

/ dev/centos/root: xfs

/ dev/centos/swap: swap

> mount / dev/centos/root /

> cat / etc/passwd

Root:x:0:0:root:/root:/bin/bash

Bin:x:1:1:bin:/bin:/sbin/nologin

Daemon:x:2:2:daemon:/sbin:/sbin/nologin

Adm:x:3:4:adm:/var/adm:/sbin/nologin

Lp:x:4:7:lp:/var/spool/lpd:/sbin/nologin

Sync:x:5:0:sync:/sbin:/bin/sync

Shutdown:x:6:0:shutdown:/sbin:/sbin/shutdown

Halt:x:7:0:halt:/sbin:/sbin/halt

Mail:x:8:12:mail:/var/spool/mail:/sbin/nologin

Operator:x:11:0:operator:/root:/sbin/nologin

Games:x:12:100:games:/usr/games:/sbin/nologin

Ftp:x:14:50:FTP User:/var/ftp:/sbin/nologin

Nobody:x:99:99:Nobody:/:/sbin/nologin

Systemd-network:x:192:192:systemd Network Management:/:/sbin/nologin

Dbus:x:81:81:System message bus:/:/sbin/nologin

Polkitd:x:999:998:User for polkitd:/:/sbin/nologin

Sshd:x:74:74:Privilege-separated SSH:/var/empty/sshd:/sbin/nologin

Postfix:x:89:89::/var/spool/postfix:/sbin/nologin

> unmount /

ASAv adds console:

> mount / dev/sda2 /

> touch / use_ttyS0

> unmount /

> exit

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