Modifying Existing User InformationHARDWARE NETWORKING LINUX SOFTWAREIt Tech Technology

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Thursday, November 26, 2015

Modifying Existing User Information

Modifying Existing User  Information

You can modify the existing user information by changing the passwords.  Home directory of a user, UIDs and GIDs, expiration dateof an account and so on.  Let’s discuss these features in the followingsections.

Modification in the exisiting user inofmation means as – a chane in the user’s password.  Their home directory, expiration date of user accout.  User Identification (UID) and Group Identification (GID).  Let’s change the home directory. UIDs, EIDsand accout expiration information of a user in the following sections.

Changing the User’s Home Directory
          To change a user’s home directory , you can run the following command:

#usermod –d

Similarly, if you want to cnage the Mahendra’s home directory from / home/Mahendra to/home/mahen, run the follwing command:

#user mod-d /home/mahen Mahendra

To change Mahendra’s home directory along with the information that’s contained in Mahendra’s home directory(home/Mahendra) to the new locatin (/home /mahen). Run the following command:

#user –d  -m /home h mahen Mahendra

This command moves all files of the Mahendra’s current directory (/home/Mahendra) to the new home directory (/home/mahen).

Changing UIDs and GIDs

In Linux every user have UID and GID.  The UID of a user is an interger value used to identify user within the Linux system whereas the GID(an iterger value ) of a user  represent a specific group to which the user belong.  If you want to change a user’s UID.  Run the following command:

#usermod  -u -

The following command changes Mahedra’s UID to 555:

#usermod –u 555 Mahendra

To change a user’s GID, run the command:
#usermod –g -

The following command changes Mahendra’s GID to 555:

#usermod –g 555 mahendra

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