Small program ideas

[eli m]

On Monday, February 25, 2013 10:15:24 PM UTC-8, Dave Angel wrote:
> On 02/25/2013 10:48 PM, eli m wrote:
> 
> > On Friday, February 15, 2013 7:22:41 PM UTC-8, eli m wrote:
> 
> >> Any small program ideas? I would prefer to stick to command line ones. Thanks.
> 
> >
> 
> > Thank you guys for the suggestions. Any more?
> 
> >
> 
> 
> 
> There are all kinds of things you could do.  First, consider something 
> 
> that might be useful.
> 
> 
> 
> 1) checksum all the files in a directory tree, using various checksum 
> 
> algorithms.
> 
> 
> 
> 2) Convert one kind of file to another.
> 
> 
> 
> 3) Calculate time between two dates
> 
> 
> 
> 4) Write some part of a backup system.  For example, copy files from a 
> 
> directory tree into a specified directory, stopping when the size totals 
> 
> N.N gig, and keeping track of which files have been so processed, so 
> 
> that after burning that directory to DVD, you can repeat the process. 
> 
> As a bonus, add a utility & datafile to the top of that directory, so 
> 
> that the DVD can be self-checking.
> 
> 
> 
> Then try something interesting:
> 
> 
> 
> 1) find the nth prime, for example the 1000th prime
> 
> 
> 
> 2) Find all perfect numbers under a trillion
> 
> 
> 
> 3) solve the puzzles on http://projecteuler.net
> 
> 
> 
> 4) Build a spell checker, using a combination of a standard 
> 
> dictionary-list and custom entries.  Bonus question - Make it smart 
> 
> enough to only spell-check comments and literal strings, when applied to 
> 
> files with an extension of .py
> 
> 
> 
> 
> 
> -- 
> 
> DaveA

How hard would it be to change one file to another and would it be a small-medium sized program?