bash - Linux bash 解析 URL

Question

如何解析url，例如:https://download.virtualbox.org/virtualbox/6.1.36/VirtualBox-6.1.36-152435-Win.exe

那么只剩下 virtualbox.org/virtualbox/6.1.36 了？

TEST_URLS=(
  https://download.virtualbox.org/virtualbox/6.1.36/VirtualBox-6.1.36-152435-Win.exe
  https://github.com/notepad-plus-plus/notepad-plus-plus/releases/download/v8.4.4/npp.8.4.4.Installer.x64.exe
https://downloads.sourceforge.net/project/libtirpc/libtirpc/1.3.1/libtirpc-1.3.1.tar.bz2
)

for url in "${TEST_URLS[@]}"; do
     without_proto="${url#*:\/\/}"
  without_auth="${without_proto##*@}"
  [[ $without_auth =~ ^([^:\/]+)(:[[:digit:]]+\/|:|\/)?(.*) ]]
  PROJECT_HOST="${BASH_REMATCH[1]}"
  PROJECT_PATH="${BASH_REMATCH[3]}"

  echo "given: $url"
  echo "  -> host: $PROJECT_HOST path: $PROJECT_PATH"
done

Answer 1

使用sed来匹配子域是否存在(无论多深)。

$ sed -E 's~[^/]*//(([^.]*\.)+)?([^.]*\.[a-z]+/[^0-9]*[0-9.]+).*~\3~' <<< "${TEST_URLS[0]}" 
virtualbox.org/virtualbox/6.1.36

或者循环

for url in "${TEST_URLS[@]}"; do
  sed -E 's~[^/]*//(([^.]*\.)+)?([^.]*\.[a-z]+/[^0-9]*[0-9.]+).*~\3~' <<< "$url"
done

virtualbox.org/virtualbox/6.1.36
github.com/notepad-plus-plus/notepad-plus-plus/releases/download/v8.4.4
sourceforge.net/project/libtirpc/libtirpc/1.3.1