On Mac OS X, how to encrypt a small folder and copy that to Google Drive or DropBox?

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http://unix.stackexchange.com – On Mac OS X, right now I use the following to back up a small project folder to a USB Flash drive: alias a='alias' a dateseq='date "+%Y-%m-%d %H:%M:%S"' a backup_proj='cp -a ~/code/MyProj "/Volumes/KINGSTON/MyProj `dateseq`" so each time I type backup_proj, the folder is backed up from the hard drive to the USB drive, and each project is also internally version controlled using Git. Each folder is only about 500kb so it takes a long time to even fill up 1GB (the Flash Drive is 16GB). The folder is backed up as: $ ls -1 /Volumes/KINGSTON/ MyProj 2012-05-27 08:20:50/ MyProj 2012-05-27 10:2 (HowTos)