111110000022222299999 daviddabney

Degrade HD movie

$ ffmpeg -i source.mp4 -vf fps=fps=15,scale=480:-1 -b:v 450k -b:a 50k out.mp4

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

You can easily scrape (or download) a site with a CLI tool called wget. It's available for Linux, Mac and Windows.

I recommend using Homebrew, especially if you're on a Mac, to install it.

brew install wget

Verify Permissions

diskutil verifyPermissions /

Repair Permissions

diskutil repairPermissions /

List files modified in the last hour - find command shell find linux unix

Use find to list files modified within the last hour:

$ find . -mtime -1

the . is the search path

-mtime time parameter

wget -P /destination/ -mpck --user-agent="" -e robots=off --random-wait -E http://example.com/

	/* open up chrome dev tools (Menu > More tools > Developer tools)
	* go to network tab, refresh the page, wait for images to load (on some sites you may have to scroll down to the images for them to start loading)
	* right click/ctrl click on any entry in the network log, select Copy > Copy All as HAR
	* open up JS console and enter: var har = [paste]
	* (pasting could take a while if there's a lot of requests)
	* paste the following JS code into the console
	* copy the output, paste into a text file
	* open up a terminal in same directory as text file, then: wget -i [that file]
	*/

	# add function to .zshrc
	function download-web() {
	wget -r -nH --no-parent --reject='index.html*' "$@" ;
	}

	# then run
	download-web http://example.com/dl/

	# POST a JSON file and redirect output to stdout
	wget -q -O - --header="Content-Type:application/json" --post-file=foo.json http://127.0.0.1

	# Download a complete website
	wget -m -r -linf -k -p -q -E -e robots=off http://127.0.0.1

	# But it may be sufficient
	wget -mpk http://127.0.0.1

	# Download all images of a website

	#Spider Websites with Wget – 20 Practical Examples

	Wget is extremely powerful, but like with most other command line programs, the plethora of options it supports can be intimidating to new users. Thus what we have here are a collection of wget commands that you can use to accomplish common tasks from downloading single files to mirroring entire websites. It will help if you can read through the wget manual but for the busy souls, these commands are ready to execute.

	1. Download a single file from the Internet
	wget http://example.com/file.iso

	2. Download a file but save it locally under a different name
	wget ‐‐output-document=filename.html example.com