gregjhogan’s gists

gregjhogan / find-pcie-devices-with-nonzero-aer-stats.sh

Created October 9, 2024 23:03

Find PCIe devices that have non-zero AER stats

ls -1d /sys/bus/pci/devices/* | xargs -I {} sh -c "echo {}; cat {}/aer_dev_* 2>/dev/null|grep -v 0"

gregjhogan / gpu-burn.py

Last active March 21, 2024 06:26

gpu burn

	import time
	import torch

	torch.backends.cuda.matmul.allow_tf32 = True

	def get_flops(bs, n, t):
	flops = (n ** 2) * (2 * n - 1) / t * bs
	print(f"{flops/1e12:.2f} TFLOP/s")

	def burn_pytorch(dt, n, bs, runtime=10):

gregjhogan / jstatd-in-logstash-docker-container.sh

Created February 8, 2024 18:18

run jstatd in logstash docker container

/usr/share/logstash/jdk/bin/jstatd -p 1099 -J-Djava.security.policy=<(echo 'grant codebase "jrt:/jdk.jstatd" { permission java.security.AllPermission; }; grant codebase "jrt:/jdk.internal.jvmstat" { permission java.security.AllPermission; };')

gregjhogan / install-ghidra-v850-extension-into-flatpak-installation.sh

Created January 14, 2024 21:41

Install Ghirdra v850 extension into flatpak installation

	cd /var/lib/flatpak/app/org.ghidra_sre.Ghidra/current/active/files/lib/ghidra/Ghidra/Extensions/
	sudo git clone https://github.com/esaulenka/ghidra_v850
	sudo ./lib/ghidra/support/sleigh ./ghidra_v850/data/languages/v850e[23].slaspec
	cd ghidra_v850/
	# TODO: install appropriate version of openjdk first
	sudo make

gregjhogan / XS748T-disable-short-reach-energy-detect.txt

Last active January 13, 2024 00:15

Netgear XS748T ProSAFE 48-Port 10G switch disable Short Reach Mode and Energy Detect Mode

	# short reach mode and energy detect mode can cause ports to turn off even when an ethernet cable is plugged in
	# note that this cannot be disabled from the web management interface under System -> Management -> Green Ethernet
	# (changing "Auto Power Down Mode" and "Short Cable Mode" settings is disabled)

	# enabled telnet from web interface under Maintenance -> Trouble Shooting -> Remote Diagnostics -> Enable
	# connect via telnet: `telnet <switch-ip> 60000` (same username/password as web interface)

	# only needed if your prompt doesn't end with '#'
	enable
	# enter config mode

gregjhogan / xpra_server_client_example.sh

Last active October 2, 2023 02:22

xpra server and client example

	# install latest from custom apt repo
	# https://bytexd.com/xpra/#install-xpra-on-ubuntu

	# start server sharing existing desktop (add for html server: --bind-tcp=0.0.0.0:9876 --html=on)
	xpra shadow :1 --pulseaudio=no --mdns=no

	# start client connecting to server
	xpra shadow ssh://<user>@<host>/1 --ssh="ssh -i ~/.ssh/id_rsa" --pulseaudio=no --mdns=no

gregjhogan / ghidra_flatpak_x11_forwarding.sh

Created October 2, 2023 02:08

ghidra flatpak app through ssh x11 forwarding

flatpak run --share=network --command=sh org.ghidra_sre.Ghidra -c "DISPLAY=$DISPLAY ghidra"

gregjhogan / bash-git-status-prompt.sh

Last active August 17, 2023 00:45

bash prompt with git status

	source ~/.git-prompt.sh
	GIT_PS1_SHOWDIRTYSTATE=true
	PS1='\[\033[1;32m\]\u@\h \[\033[0;36m\]\w\[\033[1;33m\]$(__git_ps1 " (%s)")$([ $? -ne 0 ] && echo -n " \[\e[0;31m\]!")\n\[\033[0m\]$ '

gregjhogan / combine-pdf-files.sh

Created June 30, 2023 08:26

combine PDF files into single PDF

gs -dNOPAUSE -sDEVICE=pdfwrite -sOUTPUTFILE=output.pdf -dBATCH input1.pdf input2.pdf

gregjhogan / debmirror-nvidia-drivers.sh

Created May 21, 2023 00:28

ubuntu deb mirror of nvidia drivers

	HOST=us.archive.ubuntu.com
	VERSION=530
	#debmirror --host=${HOST} --dist=focal --arch=amd64,all --section=restricted --root=/ubuntu --exclude='/.' --include='/n/nvidia-graphics-drivers-.' --no-source --no-check-gpg --progress ./mirror/${HOST}
	debmirror --host=${HOST} --dist=focal,focal-security,focal-updates --arch=amd64,all --section=restricted --root=/ubuntu --exclude='/.' --include='/n/nvidia-graphics-drivers-${VERSION}/.' --no-source --no-check-gpg --progress ./mirror/${HOST}

Greg Hogan gregjhogan