You can resume any download using the wget command provided:
- You know the url of the file
- You have the partially downloaded file and know its location
- The server the file is on supports resuming downloads
Getting the required information
In Chromium, go the the chrome://downloads/ page. Find the failed download that you want to resume. To get the url, right click on the "Retry download" link and click "Copy Link Address". The location to the file will be
~/Downloads/NAME.crdownload - NAME is the file name that is displayed above the url in the entry on the chrome://downloads/ page.
Downloading the file
The command to resume the download is:
wget -c URL -O FILE
where URL is the url of the partially downloaded file and FILE is the location of the partially downloaded file. Make sure you escape any spaces in the file path.
If the server supports resuming downloads you will see a progress bar like this:
where the '+'s indicate what was previously downloaded and the '='s indicate what is currently being downloaded.
If the server doesn't support resuming downloads, you will get an error message and it will fail to download. In this case you have no choice but to restart the download.