Stuff about Linux
Hi,
for some reasons, for example firmware updatse of IoT devices you need a readonly/anonymous FTP server and you don’t wont install and configure a whole ftp solution for this.
The python module twisted offers such a simple server. The ftp server must started with root privileges because it uses a port <1024. I always create a virtual python environment (ftp-venv) for such things.
Continue reading FTP: Setup a simple (read only) FTP server without install everything
Hi,
if you temporary don’t want to boot to a graphical login manager you can, at the grub command line, tell the systemd-target the system should boot to.
Continue reading Linux: Set systemd target (init/runlevel level) at grub command line
Hi,
when you want to see whats happened on the i2c bus on an raspberry pi you can enable tracing with debugfs.
Get root and mount debugfs. This is usually already mounted in raspbian
michael@debdev ~ # sudo su root@debdev ~ # mount -t debugfs none /sys/kernel/debug
Hi,
if you cannot logon to a linux machine and you got an error:
Continue reading Linux: ssh error “too many authentification error”
Hi,
here some often requested basic examples on how to edit text files with sed.
Continue reading sed: Editing text files