find unauthorized world writable files in linux

World writeable files can be modified by any user on the system. Generally 
removing write access for the "other" category (chmod o-w ) is advisable, but 
always consult the relevant documentation in order to avoid breaking any 
application dependencies on a particular file. Run the following script to print 
a list of world writeable files to screen. These files should then be reviewed 
and if possible the world writeable permissions removed. 

#!/bin/bash
for part in `awk '($3 == "ext2" || $3 == "ext3") { print $2 }' /etc/fstab`
do
 find $part -xdev -perm -0002 -type f -print | less
done