So I wanted to find all links to images in a folder of markdown documents.

A markdown image link is in the format of ![linktext](filename.jpg)

So from the command line I’ve used grep to output a list of the files with links:

grep '\!\[' *.md > images.txt

So the what’s happening here is that we’re calling grep and giving it a regular expression \!\[ (wrapped in single quotes) to look for (basically the \ are escaping the following characters) so it’s looking for ![ in files that match the pattern of *.md and then redirects > that output into a file called images.txt