Using Dropbox with Unix

Although last week saw some pretty exciting developments in the cloud storage (Google Drive announcement and SkyDrive free 25Gb space), the truth is that Dropbox is still the king of the cloud storage hill – it's hands down the easiest to use and integrate.

I've been a Dropbox user for a few years now, but have started using it actively only in the last 12 months or so. It's been an invaluable tool for me thanks to its integration with 1Password, the password tool of my choice. Dropbox also helps with lots of day-to-day tasks and thats why I decided it's time to share some of the tips.

Having used Dropbox extensively on Windows systems (XP on laptop and Win7 on desktops), I've recently moved on to using Dropbox with my Mac OSX desktop and Linux hosting.

So here are the top tips for using Dropbox with Unix – each one does wonders for me and so I hope you like them as well.

Important: If you're not a Dropbox user yet, please use this link to sign up – it means I'll get a small bonus (extra 500MB to my free account) for referring you.

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How To Change Ownership of Files and Directories in Unix

I've just been asked a question about changing the ownership of files from one Unix user to another, and thought it probably makes sense to have a quick post on it.

File ownership in Unix

Just to give you a quick reminder, I'd like to confirm that every single file in Unix belongs to some user and some group. There simply isn't a way to create a file without assigning ownership. I've briefly touched the topic of confirming file ownership in Unix before, so today I will simply build on that and show you how to change ownership of files.

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Unix scripts: basic arithmetic operations

As I was writing the Time and date in Unix scripts post last week, I've realized that there's one really useful feature of Unix shell scripting which I haven't covered on my pages here: it's the double bracket parenthesis which allows you to evaluate arithmetic expressions.

Basic arithmetic calculations in Unix scripts

In most scenarios, your script will need only basic arithmetic operations: summing or subtracting numbers, multiplying or dividing them. Using only these operations, you'll be able to implement all sorts of counters and calculate percentages or any other progress indicators you may need.

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