関連ワード:  bash replace multiple spaces with one space    bash replace multiple spaces with single space    sed replace multiple spaces with one space    sed replace multiple spaces with single space    shell replace multiple spaces with single space    bash replace double spaces with single space    sed replace all spaces with one space    replace multiple spaces with single space linux    bash replace all whitespace with single space    linux sed replace multiple spaces single space  
結果 : bash replace multiple spaces with one space