Stuff about Linux
Hi,
on newer debian/ubuntu system the “apt-key” (/etc/apt/trusted.gpg.d and /etc/apt/gpgtrusted.gpg) should no longer be used because in newer debian versions and is marked as insecure because a (correct) signed package is accepted from all respositories and should only be accepted from the original publisher.
Continue reading Debian: apt error NO_PUBKEY
Hi,
when you install an NVidia GPU to run HPC tasks you usually don’t want that X11/xorg use it. This can be done by force Xorg to use the framebuffer device and prevent the nvidia_drm driver from creating a framebuffer device.
You can check this by nvidia-smi
root@debdev ~ # nvidia-smi +---------------------------------------------------------------------------------------+ | Processes: | | GPU GI CI PID Type Process name GPU Memory | | ID ID Usage | |=======================================================================================| | 0 N/A N/A 1581 G /usr/lib/xorg/Xorg 167MiB | | 0 N/A N/A 1713 G /usr/bin/gnome-shell 16MiB | +---------------------------------------------------------------------------------------+
Continue reading Linux: Prevent X11/Xorg from using a (Nvidia) GPU
Hi
‘ddrescue –direct’ will open the input with the O_DIRECT option for uncached reads. ‘raw devices’ are not needed on newer kernels. For older kernels see below.
Continue reading Linux: Disk recovery with ddrescue
Hi,
to simply redirect all incoming input from STDIN to a file you can use less.
Continue reading bash: Redirect all STDIN to a file
Hi,
this post describes a simply way to forward all traps by E-Mail received via SNMP.
This process is splited in several steps
Continue reading Network: Forwarding SNMP Traps by mail with snmptrapd and snmptt