将字符串的一部分添加为单词旁边的单词，并将该行的最后一个单词转换为小写

与awk：

awk '{s=gensub(/.*\//,"","g");
      s=gensub(/>.*/,"","g",s);
      printf "%s <%s>",$1,s;
      for(i=2; i < NF; i++)
      {
        printf " %s",$i;
      }
      printf " <%s>\n",tolower($NF);}' input.txt

或者：

awk '{s=gensub(/.*\//,"","g");
      s=gensub(/>.*/,"","g",s);
      $1=$1" <"s">";
      $NF="<"tolower($NF)">";
      print;}' input.txt

输出：

<http://example.com/Bob> <Bob> <alex>