Problem

How to resume a partial file downloaded from wget instead of downloading the same file from the beginning?

Solution

Use the -c/–continue option of wget

From man wget: “Continue getting a partially-downloaded file. This is useful when you want to finish up a download started by a previous instance of Wget, or by another program.”

First fetch:

# wget http://build.chromium.org/buildbot/archives/chromium.tgz

Resume partial file:

# wget -c http://build.chromium.org/buildbot/archives/chromium.tgz