=====Linux Permissions=====

====Password settings====
You can set password expiry etc for individual users

To check status of a userspassword

  chage -l username
  
To set it to never expire

  chage -I -1 -m 0 -M 99999 -E -1 username
  
or type 
  chage username 
  
and set 

  - Minimum Password Age to 0
  - Maximum Password Age to 99999
  - Password Inactive to -1
  - Account Expiration Date to -1

 via the Interactive mode command:

====Permissions for Groups====
I had to setup permissions for a different user to access a /home directory

way this was done was setting permissions to /home/user

  user:group
  
Setup permissions to

  chmod 770 to/user/group
  
Setup the group as the owner of the directory

  chgrp group /home/user
  
set sticky bit to group and recursivelly to all directories under

  find /home/user -type d -exec chmod g+s {} +
  
  
====Checking Password Status====
To check the status of a password

  # passwd –S username
If its unlocked it looks like this
 

If its locked it looks like this
 

To unlock it
Use 
  # passwd –u unsername
 

To set the password (remember do this as root)
  # passwd username
 

If you get any warnings about password not secure enough you can ignore them. It will allow you to set the passwords.

You can test the password by exiting out of root and trying
  $ su – username