File permission bits synopsis

To explicitly create a permissions list, use the following table:

04000 or u=s  -- setuid bit     
02000 or g=s  -- setgid bit
01000 or  =t  -- sticky bit

00400 or u=r  -- user read bit
00200 or u=w  -- user write bit
00100 or u=x  -- user exec bit

00040 or g=r  -- group read bit
00020 or g=w  -- group write bit
00010 or g=x  -- group exec bit

00004 or o=r  -- other read bit
00002 or o=w  -- other write bit
00001 or o=x  -- other exec bit