labeneator’s gists

labeneator / gist:227f3f496afb27a7175c

Created June 3, 2014 14:05

Vagrant uses Chef 10.14.2 which breaks horribly on encountering use_inline_resources

	lmwangi  ~  work  someproject  virts  vagrant provision
	/Applications/Vagrant/bin/../embedded/gems/gems/vagrant-1.6.2/lib/vagrant/pre-rubygems.rb:31: warning: Insecure world writable dir /usr/local in PATH, mode 040777
	/Applications/Vagrant/embedded/gems/gems/bundler-1.6.2/lib/bundler/runtime.rb:222: warning: Insecure world writable dir /usr/local in PATH, mode 040777
	==> default: Running provisioner: chef_solo...
	Generating chef JSON and uploading...



	1 def why_run_supported?
	==> default: Running chef-solo...

labeneator / ps_to_pdf_content_protected_pdfs.sh

Last active March 20, 2021 12:47

Getting around Adobe's document protection schemes

	############ Adobe badness #############

	# In your operating system, create a postscript printer whose address is 127.0.0.1

	# Fake a postscript printer using netcat
	$ nc -l 127.0.0.1 9100 > printout.ps

	# Print your pdf using Adobe Reader to the postscript printer on 127.0.0.1
	# Netcat will diligently dump the printout to printout.ps as a postscript file

labeneator / tcp_conversations.sh

Created April 16, 2014 11:31

Summary of TCP conversations in a pcap

	# Viewing the tcp conversations in a pcap
	tshark -qn -z conv,tcp -r test.pcap
	================================================================================
	TCP Conversations
	Filter:<No Filter>
	\| <- \| \| -> \| \| Total \| Relative \| Duration \|
	\| Frames Bytes \| \| Frames Bytes \| \| Frames Bytes \| Start \| \|
	a.b.c.d:31822 <-> e.f.g.h:9999 553 91298 549 36234 1102 127532 0.000000000 5155.6751
	a.b.c.d:8645 <-> e.f.g.h:9999 402 66141 402 28210 804 94351 5162.869498000 3715.2102

labeneator / tshark-display-filter.sh

Created April 16, 2014 11:16

Tshark

	# First 10 packets of the second TCP stream in the pcap
	# Comman separated values with a header for the specified fields
	$ tshark -ntu -r test.pcap -Y tcp.stream==1 -c 10 \
	-E header=y -Tfields -E separator="," \
	-e ip.src \
	-e tcp.srcport \
	-e "ip.dst" \
	-e tcp.dstport \
	-e tcp.flags.syn \
	-e tcp.flags.ack \

labeneator / buddyinfo.py

Created March 15, 2014 21:38

Pretty prints /proc/buddyinfo

	#!/usr/bin/env python
	# vim: tabstop=4 expandtab shiftwidth=4 softtabstop=4 textwidth=79 autoindent

	"""
	Python source code
	Last modified: 15 Feb 2014 - 13:38
	Last author: lmwangi at gmail com

	Displays the available memory fragments
	by querying /proc/buddyinfo

labeneator / buddyinfo parsed output

Created March 15, 2014 21:35

Buddyinfo parsed output

	2014-03-15 23:34:32,352 - main - INFO - Starting....
	2014-03-15 23:34:32,352 - main - INFO - Parsed options: {'size': None}
	<logging.Logger object at 0x1102cffd0>
	2014-03-15 23:34:32,352 - main - DEBUG - Parsing line: Node 0, zone DMA 5 4 4 4 4 3 2 0 0 0 2
	2014-03-15 23:34:32,353 - main - DEBUG - Parsed line: {'numa_node': '0', 'zone': 'DMA', 'nr_free': '5 4 4 4 4 3 2 0 0 0 2'}
	2014-03-15 23:34:32,353 - main - DEBUG - Parsing line: Node 0, zone DMA32 2 2 3 2 2 1 3 1 2 3 386
	2014-03-15 23:34:32,353 - main - DEBUG - Parsed line: {'numa_node': '0', 'zone': 'DMA32', 'nr_free': '2 2 3 2 2 1 3 1 2 3 386'}
	2014-03-15 23:34:32,353 - main - DEBUG - Parsing line: Node 0, zone Normal 56332 12573 2212 959 448 179 35 5 0 0 35002
	2014-03-15 23:34:32,353 - main - DEBUG - Parsed l

labeneator / gist:9574151

Created March 15, 2014 21:30

alloc failure

	swapper: page allocation failure. order:4, mode:0x20
	Pid: 0, comm: swapper Not tainted 2.6.32-gentoo-r7 #1
	Call Trace:
	<IRQ> [<ffffffff8107f082>] 0xffffffff8107f082
	[<ffffffff810a29a4>] 0xffffffff810a29a4
	[<ffffffff810a2b9f>] 0xffffffff810a2b9f
	[<ffffffff810a2d35>] 0xffffffff810a2d35
	[<ffffffff810a2de3>] 0xffffffff810a2de3
	[<ffffffff810a2e4e>] 0xffffffff810a2e4e
	[<ffffffff813ed961>] 0xffffffff813ed961

labeneator / open_dummy_pipe.py

Last active January 4, 2016 20:59

Dummy writer prevents a fifo from sending EOFs to all readers when the real writer exits.

	while True:
	self.logger.info("[Re]starting to read %s" % self.input_file)
	with open(self.input_file, "rb") as f:
	f1 = open (fname, "w") # The dummy writer has to be opened after a reader, otherwise it would block
	for line in f:
	...do_stuff_with_line...(line)

labeneator / reader.py

Last active January 4, 2016 20:59

	# Pre-create the fifo
	# mkfifo /tmp/example_fifo

	# Save this to a file and strace it
	# strace -fttt -o open_close python test.py

	import time

	fname = "/tmp/example_fifo"
	with open(fname, "r") as f:

labeneator / broken_pipe_persistent_reader.py

Created January 28, 2014 22:11

This will fail to read a FIFO if writers disappear

	while True:
	self.logger.info("[Re]starting to read %s" % self.input_file)
	with open(self.input_file, "rb") as f:
	for line in f:
	...do_stuff_with_line...(line)

L Mwangi labeneator