How to download and setup errcheck
Open terminal and run command
git clone https://github.com/kisielk/errcheck.git
git clone is used to create a copy or clone of errcheck repositories.
You pass git clone a repository URL. it supports a few different network protocols and corresponding URL formats.
Also you may download zip file with errcheck https://github.com/kisielk/errcheck/archive/master.zip
Or simply clone errcheck with SSH
[email protected]:kisielk/errcheck.git