Bring back deleted files with lsof

There you are, happily playing around with an audio file you’ve spent all afternoon tweaking, and you’re thinking, “Wow, doesn’t it sound great? Lemme just move it over here.” At that point your subconscious chimes in, “Um, you meant mv, not rm, right?” Oops. I feel your pain — this happens to everyone. But there’s a straightforward method to recover your lost file, and since it works on every standard Linux system, everyone ought to know how to do it.

Creating Jigsaw Download (Jigdo) files for downloading ISO’s

Introduction

Jigdo (JIGsaw DOwnload) is a small utility that can assemble a CD/DVD image from it’s internal files.

For example, Debian has been using it for years for distributing the entire distribution: you downloaded a .jigdo file, and then, using the utility jigdo-lite (package jigdo-file on Debian like and RPM based [1]. This way, you only downloaded small files from servers, preventing line failures, spreading load between several servers, etc.

Furthermore, if you already had some files (for example if you started at version X and have been downloading and keeping al files until X.Y, jigdo, can use those updated files to compare them against the .jigdo file and avoid downloading duplicated files…