在ubuntu上重新安装后无法运行go命令

I have a ubuntu desktop, and I wanted to get rid of gccgo compiler on my machine. I tried uninstalling following these steps: http://www.installion.co.uk/ubuntu/saucy/universe/g/golang-go/uninstall.html

And after I ran sudo apt-get install golang-go whenever I try to execute a go command I get this:

Where op is one of cprtx optionally followed by v for verbose output.
For compatibility with old Go build environments the op string grc is
accepted as a synonym for c.

For more information, run
   godoc cmd/pack
# online_events/context_aggregator/fileman/csv_read
Usage: pack op file.a [name....]
Where op is one of cprtx optionally followed by v for verbose output.
For compatibility with old Go build environments the op string grc is
accepted as a synonym for c.

For more information, run
   godoc cmd/pack
# runtime/cgo
Usage: pack op file.a [name....]
Where op is one of cprtx optionally followed by v for verbose output.
For compatibility with old Go build environments the op string grc is
accepted as a synonym for c.

For more information, run
   godoc cmd/pack