Remove extra space in dreamweaver

1. Open the file
2. Click CTRL + F
3. Tick "Use regular expression"
4. Type  the following in "Find"

[\r\n]{2,}

5. Type  the following in "Replace"

\n

6. Press "Replace All"

Add Scrolbar only if content present

If you have an element whose content has to scroll only when it exceeds a particular width/height you can do so by assigning an id or class with the following css properties so that the scrollbar will appear only if the height exceeds the threshold value.

.noscroll {
  width:150px;
  height:150px;
  overflow: auto; 
}

Check the executable version in ubuntu linux

Enter the following command in the terminal

file [file_name]