steven2358

FFmpeg cheat sheet

A list of useful commands for the FFmpeg command line tool.

Download FFmpeg: https://www.ffmpeg.org/download.html

Full documentation: https://www.ffmpeg.org/ffmpeg.html

Basic conversion

CodeBrauer

If you haven't installed any FUSE yet:

brew tap homebrew/fuse
brew install Caskroom/cask/osxfuse

1. brew install qemu ext4fuse
2. qemu-img convert -p -O vmdk snapshot.qcow2 system.vmdk This will take some time...
3. Download and register for a free licence of VMDK Mounter for Mac® OS X and install it.
4. Reboot your macOS device.

pichuang

#!/bin/sh -ev
# Reference: https://github.com/mininet/mininet/wiki/Installing-new-version-of-Open-vSwitch
# How to test: ovs-vsctl -V

# Check permission
test $(id -u) -ne 0 && echo "This script must be run as root" && exit 0

#Remove old version ovs
aptitude remove openvswitch-common openvswitch-datapath-dkms openvswitch-controller openvswitch-pki openvswitch-switch -y

edokeh

//
//                       _oo0oo_
//                      o8888888o
//                      88" . "88
//                      (| -_- |)
//                      0\  =  /0
//                    ___/`---'\___
//                  .' \\|     |// '.
//                 / \\|||  :  |||// \
//                / _||||| -:- |||||- \

Haraguroicha

(function(){
  //以下可自行修改，目前可7行且最多14字
  var userWidth = 900;  //我是寬度
  var userHeight = 680; //我是高度
  var userWords = '';   //我是預設文字
  var userColor = '';   //我是背景色彩

  //以下請勿修改
  if(location.href.match(/https?:\/\/small-upup\.upuptoyou\.com\/?/) != null) {
    $('#words').val(userWords === '' ? 'Modify By:\n腹黒い茶 \nQQQQ  QQQQ  !!\nQ  Q  Q  Q  !!\nQ QQ  Q QQ  !!\nQQQQ  QQQQ\n    Q     Q !!' : userWords);

earthgecko

#!/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

henrik

tmux cheatsheet

As configured in my dotfiles.

start new:

tmux

start new with session name:

darrenderidder

#!/bin/bash

# A simple test script to demonstrate how to find the
# "absolute path" at which a script is running. Used
# to avoid some of the pitfals of using 'pwd' or hard-
# coded paths when running scripts from cron or another
# directory.
#
# Try it out:
# run the script from the current directory, then