Download manager with "wget"

nima0102 · 12-27-2009, 04:12 PM

Hi
First of all thanks for sharing your experiences on this forum
In my new project I have to program a download server for downloading too files for one company, so I decide to use wget as back-end program and main engine. I need to check status of wget whether or not downloading has been completed and if there is any error, I can check that error so that handle that error.Unfortunately I could not find any information about status of wget yet.

Thanks for any help or guidance

mlp68 · 12-27-2009, 04:26 PM

wget does set the error return code proper, so you can check on success of failure by looking at the error status. In a shell script, for example

Code:

if ! wget <some url...> ; then 
<take action in case of failure>
fi

you can direct the output with the -o switch and examine it later in case of multiple concurrently running wgets.

Hope it helps a bit,
mlp

nima0102 · 12-29-2009, 12:38 PM

Thanks
But I need to know completely information about exit status, for example type of error: network failure or server error or etc.
I have found this link about exit status from wget page.
Unfortunately I could not correctly get result from my tests, my results are different those exit status.

Thanks for more information.

mlp68 · 12-29-2009, 11:13 PM

I tried to elicit a few of the error codes different from 1 but couldn't. I think your best bet is to examine the logfile of the transaction in question. For example:

Code:

% wget -o x httx://localhost
% cat x
httx://localhost: Unsupported scheme.

% wget -o x http://localhost:1111
% cat x
--2009-12-30 00:09:50--  http://localhost:1111/
Resolving localhost... 127.0.0.1
Connecting to localhost|127.0.0.1|:1111... failed: Connection refused.

Looks easy enough to fish out certain keywords such as the "Unsupported scheme" or "Connection refused" and react properly.

Hope it helps,

mlp

Shadow_7 · 12-30-2009, 09:31 AM

Or just run wget -c a second time, if there's no change in the file and you get a clean exit status, it was successful / completed. Assuming static content. Assuming that the host server supports -c. Assuming assuming assuming....