CHMOD HELP
# # u g o u g o u g o # 0600 rw------- 0400 r-------- 0200 -w------- u - user # 0660 rw-rw---- 0440 r--r----- 0220 -w--w---- g - group # 0666 rw-rw-rw- 0444 r--r--r-- 0222 -w--w--w- o - others
#
# Note that the default 0600 is the most secure one and should only be changed
# if you need your files for shell scripting or other external applications.