I am new to Ubuntu and i was wondering why i am unable to copy Codeigniter folder in downloads to another folder in the home directory? I just installed lamp and setup a another folder by following this guide and fear i may have messed something up.
My guess is you used sudo to unpack a tarball, or something to that effect, which made the created directory be owned by root. Fire up a terminal and try this:
Replace snotbox with your username, and remember that the file path is case sensitive. i.e. ~/Downloads/Codeigniter is not the same as ~/Downloads/codeigniter.