QEMU > Serial console

In the guest /etc/default/grub:

GRUB_CMDLINE_LINUX="console=ttyS0,115200n8"

qemu-system-x86_64 \
...
    -chardev socket,server=on,wait=off,logfile=serial.log,id=serial0,path=console.sock \
    -serial chardev:serial0 \
...

socat stdin,raw,nonblock,echo=0,escape=0x0f unix-connect:console.sock

0x0f is the sequence for ctrl+o, press it to exit socat.

To figure out possible key sequences you can use the showkey command in ASCII mode:

# doas showkey -a

Press any keys - Ctrl-D will terminate this program

a        97 0141 0x61
b        98 0142 0x62
c        99 0143 0x63
d       100 0144 0x64
e       101 0145 0x65
^O       15 0017 0x0f

20:00 20.02.2024