For all of your chmoding needs
0 == --- == no access
1 == --x == execute
2 == -w- == write
3 == -wx == write/execute
4 == r-- == read
5 == r-x == read/execute
6 == rw- == read/write
7 == rwx == read/write/execute
So if you are ever in the position where you have access to someone else's
computer chmod 077 * should do the trick.