For instance, I have been booting up using Linux Mint 9 as a persistent install on a 4GB USB stick. I have updated and customized the installation, so I figured it was just a matter of time before the system warned me about having low disk space.
Today the system warned me that I only had 140MB out of the 3GB persistence file that I set up. I figured that most of it was the cache on Chromium and Firefox, so I went into Package Manager and looked for "cache". I sifted through the search results and I found BleachBit.
I installed it and quickly found out that the 0.7.3 version hosted was older than the 0.8.0 version currently for download. So I installed the newer version for Lucid Lynx.
It was eye-opening to say the least. I can preview results when I choose to clean certain folders. For a cleanup of the cache file for Chromium and Firefox, I get about 300+MB reclaimed. But when I include APT, Broken Desktop Files, System Cache, and Localizations, this is what shows up:
That is a lot of disk space.
You will have to run BleachBit as an Administrator to be able to reclaim space from apt and the System category.
It only took about 2 minutes for the operation to be completed. I was actually running BleachBit while typing this post up!
There is also a version available for Windows users so you might want to try that as well.
You might want to read these guides for more information: