Bash sub to return the github url the current git working tree, or a specific file if specified. Currently links to HEAD of the default branch.

ghu.sh

ghu() {
  if [ $(git rev-parse --is-inside-work-tree) = 'true' ]
  then
    test ! -z "$1" && file=$(readlink -f "$1")
    url=$(git remote -v | sed '/fetch/d; s/.*\@//; s/ .*//; s/:/\//; s/^/https:\/\//')
    top=$(git rev-parse --show-toplevel)
    echo $url/tree/master$(echo $file | sed "s.^$top..")
  else
    echo "not inside a git working directory"
  fi
}