Download - The Bastards Book of Regular Expressions

Anchors: A way to trim emptiness 57So, in order to remove unneeded spaces at the beginning of a line:In English We’re looking to match all whitespace characters that occur at the beginning of a line.We want to replace those characters with nothing (i.e. we want to delete them).Find ˆ +Replace (with nothing)This regex only affects lines that begin with one-or-more whitespace characters. For those lines,those whitespace characters are removed.Exercise: Add a common directory to a list of filesAs a digital photographer, I run into this scenario all the time: I’ve taken a bunch of photos and wantto send them to someone across the world. But with megapixels being so plentiful today, these filesin their raw format can weigh in as much as 10MB to 20MB – too big to send as email attachments.And this client doesn’t have a shared Dropbox.So the easiest way to send them is to upload them to an FTP or web server. On my computer, I dothis by opening the folder, selecting all the files, and dragging them to my server:Moving filesThe client can then download the files at their leisure. What was dog.jpg in my local hard drivecan now be found at:http://www.example.com/images/client-joe/dog.jpgBut how do I tell the client this? Well, first, I select all the filenames on my local hard drive and doa copy-and-paste into a text editor. I get something like: