Vergonha no Yahoo por CSV inválido
$ cat quotes.csv
"Google Inc.","GOOG",501.79,+0.92,"+0.18%", 678,365,000,26.36
"Apple Inc.","AAPL",106.86,-2.94,"-2.68%", 5,864,839,000,17.02
$ sed 's/[[:blank:]]*\([[:digit:],]\+\)\(,[[:digit:].]\+\)/""/' quotes.csv
"Google Inc.","GOOG",501.79,+0.92,"+0.18%","678,365,000",26.36
"Apple Inc.","AAPL",106.86,-2.94,"-2.68%","5,864,839,000",17.02