I backed up a large number of files to S3 from a PC before switching to a Mac several months ago. Several months later, I'm now trying to open the files and realized the files were all compressed by the S3 GUI tool I used so I can not open them.
I can't remember what program I used to upload the files and standard decompression commands from the command line are not working e.g.,
unzip
bunzip2
tar -zxvf
How can I determine what the compression type is of the file? Alternatively, what other decompression techniques can I try?
PS - I know the files are not corrupted because I tested downloading and opening them back when I originally uploaded to S3.
You can use Universal Extractor (open source) to determine compression types. Here is a link: http://legroom.net/software/uniextract/
The little downside is that it looks in the first place for the extension, but I manage to change the extensions myself for a inknown file and it works almost always, eg .rar or .exe etc..
EDIT:
I found a huge list of archive programs, maybe one of them will work? It's ridiciously big:
http://www.maximumcompression.com/data/summary_mf.php http://www.maximumcompression.com/index.html