[ILUG-Cochin.org] how to change login password in user login

[Shibin k.reeny]

Balakrishnan Pillai wrote:
> On Thu, Jan 8, 2009 at 3:49 AM, Shibin k.reeny <shibinkreeny at gmail.com> wrote:
>
>   
>> using usermod command we can change the user name that is login name
>> usermod -l newname currentusername
>> but how to change the entire GECOS information like real name,name the home
>> directory,group etc...
>> at command prompt.
>>
>>     
>
>
> login name and home directory are not in the GECOS fields of the
> /etc/password file.
>
> chfn command will change the GEFOS fields
>  " man chfn " for more information and how to change each field.
> Real name and other GECOS fields  can simply be changed, no problem
> use any text editor to do it. BETTER USE chfn comamnd.
>
> to change login name Edit /etc/passwd
> "man 5 passwd" will give more information about the structure of
> /etc/passwd file.
>
> to change the login directory
> 1.. create a directory in  /home  or anywhere as mentioned in the
> /etc/passwd file  (field 6)
> 2.  name of the directory should match the login name (field No 1)
>     (Directory name can be different, but this will create confusion)
>     UID of the directory should match the UID mentioned in the
> /etc/password file (field3)
>
> 3.  create a group
> if using  debian or ubuntu use the command groupadd
> /etc/group file  contains all groups and their GID (field 3)
>
> Change owner and group of the directory to that of the user id (UID)
> mentioned in the /etc/passwd file and groupID (GID) mentioned in the
> /etc/group file   (field No 3).
>
>
> Please  note that kernel will identify the users by their UID and GID
> of the users and not by their login name.
>
> with regards
> M.Balakrishna Pillai
>
>
> if using debian or ubuntu
> use the command adduser
> adduser loginname:loginname path to the newly created directory
>
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>
>   
first sorry for taking this long to reply.
thanks for the above information it was very useful.
i did add a user called test to do the changes :

username = test
realname = test

step 1 : to change the username(login name)
            
            *usermod -l test1 test*

step 2 :to change the realname
          
            *chfn -f test1 test
          *(using chfn we can change the other GECOS information)
step 3: to the password
*        
          passwd test1
*
step 4 : to change the shell

            * chsh -s /bin/sh test1
*step 5: to change the home directory
*         
          usermod -d /home/test1 test1
          mv /home/test/ /home/test1
*step6: to change the user id*
        
         usermod -u 1088 test1

*upto this i could change but i didn't understand howto change the 
information(renaming the group & its id) regarding the group that 
already exist without removing its existing members.

*


         
*








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