Editing Linux 101 hacks (section)

=='''Hack 70. Create a new user'''==


'''Add a new user – Basic method'''


Specify only the user name.


<nowiki># </nowiki>useradd jsmith


'''Add a new user with additional Parameter'''


You can also specify the following parameter to the useradd o -c : Description about the user.


# 
## -e : expiry date of the user in mm/dd/yy format 

# '''adduser -c "John Smith - Oracle Developer" -e 12/31/09 jsmith '''

Verify that the user got added successfully.


<nowiki># grep jsmith /etc/passwd jsmith:x:510:510:John Smith - Oracle Developer:/home/jsmith:/bin/bash</nowiki>


'''Change the user password.'''


<nowiki># </nowiki>'''passwd jsmith'''


Changing password for user jsmith. New UNIX password:


BAD PASSWORD: it is based on a dictionary word Retype new UNIX password:

passwd: all authentication tokens updated successfully.

'''Note: '''Make sure to follow''' '''[http://www.thegeekstuff.com/2008/06/the-ultimate-guide-for-creating-strong-passwords/ ][http://www.thegeekstuff.com/2008/06/the-ultimate-guide-for-creating-strong-passwords/ these best practices][http://www.thegeekstuff.com/2008/06/the-ultimate-guide-for-creating-strong-passwords/  ]to''' '''create a strong password''' '''for the user.


'''How to identify the default values used by useradd?'''


Following are the default values that will be used when an user is created.


<nowiki># </nowiki>'''useradd –D'''


GROUP=100


HOME=/home


INACTIVE=-1


EXPIRE=


SHELL=/bin/bash


SKEL=/etc/skel