How do I delete unused data?
46487
Purge unused data (e.g. particle system, or groups) by script
155020
How do I delete a folder but not the contents?
94440
How to delete unnecessary white space?
149021
How do I clean up my harddrive?
91995
Unused bibliography entries - how to check which entries were not used?
49775
How to delete files bypassing trash
21236
How can I delete everything from my MacBook Pro before selling it?
157014
How do I remove objects?
89498
How do I remove hidden backup files?
117233
How to wipe free disk space in Linux?
70407
Can I delete /var/log files because of low root space in Ubuntu?
22675
How can I erase the old data from logcat?
79619
How to delete files from Ubuntu One?
36257
Is there a way to truly delete all deleted files?
47667
remove oldest files
57881
Disk still full after deleting some files
125237
What's the best way to completely remove everything from a computer, without re-installing?