When writing to the web, know the correspondence between the web and the directory:
http://copland.udel.edu/~username/cisc105/proj2/data.txt
~/username/public_html/cisc105/proj2/data.txt
~public_html/cisc105/proj2/data.txt
If you logged in as "username" ~username/ and ~/ mean the same thing
NOTE: ~/username is NOT the same as ~/ or ~username/
chmod command changes the mode
mode = permission mode
You can see the permission mode with ls -l
d|rwx|rwx|rwx|
directory or file (ignored for chmod) | owner (u) | group (g) | everyone else (a)
chmod a+rx filename.html and
chmod 755 filename.html do the same thing
755 -> 111 101 101 -> changes to rwx r-x r-x (1's turn option on, 0's turn it off)
Remember: public_html is NOT part of the URL, only the directory