Edit the ~/.bash_profile file
code () {
if [[ $# = 0 ]]
then
open -a "Visual Studio Code"
else
[[ $1 = /* ]] && F="$1" || F="$PWD/${1#./}"
open -a "Visual Studio Code" --args "$F"
fi
}
Reproduced in: https://my.oschina.net/u/3117745/blog/1516678