Patrick Trantham tranthamp

tranthamp / systemd - Enable syslog

Created May 5, 2014 16:48

	# Edit /etc/systemd/journal.conf and set the following options to prevent the creation of .journal files and to forward messages to syslog:
	Storage=none
	ForwardToSyslog=yes

	# Check if syslog.service is a sym-link to /dev/null and remove it if so
	$ ls -l /lib/systemd/system/syslog.service
	$ rm /lib/systemd/system/syslog.service

	# Unmask the syslog service so that it can be started
	$ systemctl unmask syslog.service

tranthamp / u-boot - i2c

Last active May 26, 2023 04:53

	# Select the i2c bus
	i2c dev <bus>
	i2c dev 0

	# Probe the device
	i2c probe <chip>
	i2c probe 0x60

	# Read from the device
	i2c read <chip> <chip address> <length> <memory address>

tranthamp / u-boot - mtest

Created May 2, 2014 15:34

	# U-boot mtest usage
	mtest <start> <end> <pattern> <iterations>

	Ex:
	mtest 0x82000000 0x83000000 0xaa55aa55 1

tranthamp / gist:5705850

Created June 4, 2013 13:20

some of my bash aliases

	alias mkconfig='/usr/bin/make menuconfig'
	alias vk='vim -c "set ts=8 sw=8 tw=80 noet"'

tranthamp / gist:5444378

Created April 23, 2013 15:09

Handy git-fu

	# Create a patchset for a specific file or files, assuming the file doesn't exist in your local repo
	git format-patch --output-directory myPatch commit-id-begin..commit-id-end -- file1 file2 file3

tranthamp / gist:5052573

Last active December 14, 2015 07:39

Create SD card image

	// Create image from first 1.0 GB of data on the sd card
	sudo dd if=/dev/sdd of=./my.img bs=1024 count=1048576

	// Compress the image
	zip my-image.zip my.img

	// Use win32diskimager from this location to write to a new sd card under windows
	http://sourceforge.net/projects/win32diskimager/files/latest/download?source=navbar

tranthamp / gist:4127722

Last active October 13, 2015 02:48

screen notes

	# Start a new named session
	screen -S <name>

	# Attach to a running named session
	screen -x <name>

	# Create a new window
	ctrl-a c

	# Name a window

tranthamp / gist:3953665

Created October 25, 2012 16:02

yavta notes

	// I'm using a virtual video capture device via the vivi kernel module
	# modprobe vivi

	// This creates /dev/video0 if no other devices have yet been enumerated.

	// Display available formats for the video device
	# yavta --enum-formats /dev/video0
	Device /dev/video0 opened.
	Device `vivi' on `vivi-000' is a video capture device.
	- Available formats:

tranthamp / gist:3750462

Created September 19, 2012 15:57

Beaglebone 200KHz on timer 4 (u-boot)

tranthamp / gist:3034670

Created July 2, 2012 18:13

ssh-agent notes