Permissions
From John Freier
Fix permissions
restorecon -R -v
Read/Write/Execute
4 2 1
Read Write Execute
0 No No No
1 No No Yes
2 No Yes No
3 No Yes Yes
4 Yes No No
5 Yes No Yes
6 Yes Yes No
7 Yes Yes Yes
Examples
drw-r--r-- = (4+2+1)(4)(4) = 744
User = (read/write)
Group = (read)
Other = (read)
Set all the members(user, group, other) for a file to Read & Write
chmod a=rw example.data
Set the User to Read, Write, & Execute
chmod u=rwx example.data
Add the Write permission to the Group for a file.
chmod g+w example.data
Remove the Read & Write from the Other membership of a file.
chmod o-rw example.data