Bo Qin qboster

tmux shortcuts & cheatsheet

start new:

tmux

start new with session name:

tmux new -s myname

使用ffmpeg合并MP4文件

ffmpeg -i "Apache Sqoop Tutorial Part 1.mp4" -c copy -bsf:v h264_mp4toannexb -f mpegts intermediate1.ts
ffmpeg -i "Apache Sqoop Tutorial Part 2.mp4" -c copy -bsf:v h264_mp4toannexb -f mpegts intermediate2.ts
ffmpeg -i "Apache Sqoop Tutorial Part 3.mp4" -c copy -bsf:v h264_mp4toannexb -f mpegts intermediate3.ts
ffmpeg -i "Apache Sqoop Tutorial Part 4.mp4" -c copy -bsf:v h264_mp4toannexb -f mpegts intermediate4.ts
ffmpeg -i "concat:intermediate1.ts|intermediate2.ts|intermediate3.ts|intermediate4.ts" -c copy -bsf:a aac_adtstoasc "Apache Sqoop Tutorial.mp4"

To remove a submodule you need to:

Delete the relevant section from the .gitmodules file.
Stage the .gitmodules changes git add .gitmodules
Delete the relevant section from .git/config.
Run git rm --cached path_to_submodule (no trailing slash).
Run rm -rf .git/modules/path_to_submodule (no trailing slash).
Commit git commit -m "Removed submodule "
Delete the now untracked submodule files rm -rf path_to_submodule

	"""
	Determine IPv4 addresses on a Linux machine via the socket interface.
	Thanks @bubthegreat the changes to make it Py2/3 compatible and the helpful
	code comments: https://gist.github.com/pklaus/289646#gistcomment-2396272
	This version has all comments removed for brevity.
	"""

	import socket
	import array
	import struct

	#!/usr/bin/env/python
	#
	# More of a reference of using jinaj2 without actual template files.
	# This is great for a simple output transformation to standard out.
	#
	# Of course you will need to "sudo pip install jinja2" first!
	#
	# I like to refer to the following to remember how to use jinja2 :)
	# http://jinja.pocoo.org/docs/templates/
	#

	#!/bin/bash
	# bash generate random alphanumeric string
	#

	# bash generate random 32 character alphanumeric string (upper and lowercase) and
	NEW_UUID=$(cat /dev/urandom \| tr -dc 'a-zA-Z0-9' \| fold -w 32 \| head -n 1)

	# bash generate random 32 character alphanumeric string (lowercase only)
	cat /dev/urandom \| tr -dc 'a-z0-9' \| fold -w 32 \| head -n 1

	#!/usr/bin/env python

	"""Simple HTTP Server With Upload.

	This module builds on BaseHTTPServer by implementing the standard GET
	and HEAD requests in a fairly straightforward manner.

	"""

	#!/bin/bash
	#
	# Binary search tree is of the form:
	# 10
	# / \
	# / \
	# 4 16
	# / \ /
	# 1 7 12
	#

	Example -1
	=====================

	input {
	file {
	path => [ "/usr/local/var/log/suricata/eve.json", "/var/log/ulogd.json" ]
	codec => json
	type => "json-log"
	}
	}