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On Tue, May 01, 2007 at 11:54:08AM +0100, pic@gavin-egan.com wrote:
> Yep the idea being I could send an email with a known subject the account is
> pre-made on my server to only deal with those emails and the rules for the
> email would only accept emails directly from me . Then have say an automated
> download of an ISO (linux distro) for example by putting in a command into
> the message.
> 
> I found a command line download program 
> http://www.snapfiles.com/get/wpd.html
> seemed ok but then realised that I could get linux to get files from FTP via
> terminal incredibly easily - just not from HTTP (not that I have tried yet)

Not via terminal? I think what you want is the wget program, it will get
basically anything with http or ftp and has a zillion options to do
things like recursively get whole webpages. Basic syntax is wget
http://example.com/somefile.dat

> Its all just something I am playing with - I don't NEED to be able to do
> this but on those occasions when I might find it useful (upload or download
> etc)

I do that all the time myself.

Another program to look up with nohup, short for no hangup. For instance
to get some really big iso file:

wget http://example.com/foo.iso

Works fine, but when you close that telnet, wget recieves the "hangup"
signal and quits.

nohup wget http://example.com/foo.iso > foo.iso.log &

With nohup the nohup "wrapper" traps any hangup signal, so the program
will run even without a terminal. The & detaches the command from the
terminal so you can do other things. Output is then logged to
foo.iso.log

Run tail -f foo.iso.log, the -f stands for follow, and you can even see
a constantly updating record of what wget is doing.

- -- 
http://petertodd.ca
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