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'''Create extra root user account to your Linux box.'''
 
'''Create extra root user account to your Linux box.'''
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  The ‘root’ account with user id 0 is the most powerful user in Linux and Unix system.  This article show the step by step to create the duplicate root account that have the same privileges as super user root account on the Linux Fedora Core operating system.
 
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  You may want to make replicate of root user account, or to create more than one user account that have the same capabilities as a 'root' user (superuser) account.  Why, may be for a root backup user account, incase of something happen to the 'root' user account or may be just for fun :-).
 
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  To create another root user account, we need to replicate the 'root' user account characteristic, then make one account that have the same characteristic and capabilities of the 'root' user account.
 
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Let begin by check the 'root' user account.
 
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1.  Check user id for ‘root’ user account:
 
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<pre>
 
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[root@fedora ~]# id root
 
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uid=0(root) gid=0(root) groups=0(root),1(bin),2(daemon),3(sys),4(adm),6(disk),10(wheel)
 
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</pre>
 
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Explanations of the command output:
 
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A.  uid=0(root) The user id for user 'root' user is 0.
 
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B.  gid=0(root) the group id for user ‘root’ is 0.
 
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C.  groups=0(root),1(bin),2(daemon),3(sys),4(adm),6(disk),10(wheel) The user ‘root’ is belong in groups; root, bin, daemon, sys, adm, disk and wheel.
 
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2.  Now we take a look at the passwd, shadow and group files that contain ‘root’ user information:
 
 
<pre>
 
<pre>
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[root@fedora ~]# adduser -u 0 -o -g 0 -G 0,1,2,3,4,6,10 -M root2  
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[root@fedora ~]# less /etc/passwd
 
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root:x:0:0:root:/root:/bin/bash
 
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[root@fedora ~]# less /etc/shadow
 
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root:$1$B2BEWv4X$Gb.QPb6I3RwCkEkz13ow21:13080:0:99999:7:::
 
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[root@fedora ~]# less /etc/group
 
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root:x:0:root
 
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bin:x:1:root,bin,daemon
 
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daemon:x:2:root,bin,daemon
 
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sys:x:3:root,bin,adm
 
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adm:x:4:root,adm,daemon
 
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tdisk:x:6:root
 
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wheel:x:10:root
 
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</pre>
 
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  From the information gather above, to create a user that have the same power (superuser power) as a ‘root’ user in Linux system, we need to create a user with same root user uid, gid and group.
 
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3.  To create user account that has the same ability (super user) as the ‘root’ user, issue this command:
 
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<pre>
 
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[root@fedora ~]# adduser -u 0 -o -g 0 -G 0,1,2,3,4,6,10 -M root2
 
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</pre>
 
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Adduser command explanations:
 
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adduser
 
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-u 0 -o
 
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-g 0
 
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-G 0,1,2,3,4,6,10
 
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-M
 
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root2
 
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Using Linux adduser command to create a new user account or to update default new user information.
 
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Set the value of user id to 0.
 
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Set the initial group number or name to 0
 
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Set supplementary  group to:
 
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0 = root
 
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1 = bin
 
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2 = daemon
 
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3 = sys
 
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4 = adm
 
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6 = disk
 
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10 = wheel
 
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'home directory' not created for the user.
 
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User name of the new user account.
 
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Note: you need to have the administrative privilege on the system in order to issue 'adduser' command above.
 
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4.  Now add a password for user ‘root2’ by issue the ‘passwd root2’ command, see example below:
 
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<pre>
 
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[root@fedora ~]# passwd root2
 
[root@fedora ~]# passwd root2
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Changing password for user root2.
 
Changing password for user root2.
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New UNIX password:
 
New UNIX password:
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Retype new UNIX password:
 
Retype new UNIX password:
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passwd: all authentication tokens updated successfully.  
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passwd: all authentication tokens updated successfully.
 
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</pre>
 
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Note: you need to have the administrative privilege on the system in order to issue 'passwd' command above.
 
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5.  Check id for user root2 by issue the ‘id root2’ command, see example below:
 
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<pre>
 
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[root@fedora ~]# id root2
 
[root@fedora ~]# id root2
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uid=0(root) gid=0(root) groups=0(root),1(bin),2(daemon),3(sys),4(adm),6(disk),10(wheel)
 
uid=0(root) gid=0(root) groups=0(root),1(bin),2(daemon),3(sys),4(adm),6(disk),10(wheel)
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</pre>
 
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6.  Now recheck the passwd, shadow and group files that contain ‘root2’ user informations to confirm the changes:
 
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<pre>
 
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[root@fedora ~]# less /etc/passwd
 
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root:x:0:0:root:/root:/bin/bash
 
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root2:x:0:0::/home/root2:/bin/bash
 
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[root@fedora ~]# less /etc/shadow
 
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root:$1$B2BRWv4X$Gb.MPc6I3RwCkEkT13ow21:13080:0:99999:7:::
 
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root2:$1$bQHGH4cX$TtsV/WVdFe5cIsHWjzc.N1:13112:0:99999:7:::
 
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[root@fedora ~]# less /etc/group
 
[root@fedora ~]# less /etc/group
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root:x:0:root,root2
 
root:x:0:root,root2
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bin:x:1:root,bin,daemon,root2
 
bin:x:1:root,bin,daemon,root2
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daemon:x:2:root,bin,daemon,root2
 
daemon:x:2:root,bin,daemon,root2
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sys:x:3:root,bin,adm,root2
 
sys:x:3:root,bin,adm,root2
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adm:x:4:root,adm,daemon,root2
 
adm:x:4:root,adm,daemon,root2
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disk:x:6:root,root2
 
disk:x:6:root,root2
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wheel:x:10:root,root2
 
wheel:x:10:root,root2
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</pre>
 
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7.  Everything should be ok, now try to login to system with newly created ‘root2’ account, see example:
 
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<pre>
 
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login as: root2
 
login as: root2
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[email protected]'s password:
 
[email protected]'s password:
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Last login: Thu Nov 24 23:48:49 2005 from 10.7.0.112
 
Last login: Thu Nov 24 23:48:49 2005 from 10.7.0.112
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Could not chdir to home directory /home/root2: No such file or directory
 
Could not chdir to home directory /home/root2: No such file or directory
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-bash-3.00#
 
-bash-3.00#
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-bash-3.00#
 
-bash-3.00#
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-bash-3.00# su –
 
-bash-3.00# su –
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[root@fedora ~]#  
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[root@fedora ~]#
 
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</pre>
 
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8.  Make sure that you execute the su command with hyphen ( su - ) to get the PATH of the user that you become to... below is the example of the su command with hyphen and without hyphen.
 
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Loggin in as user tenouk, then execute $PATH as example below.
 
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<pre>
 
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[tenouk@fedora ~]$ $PATH
 
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-bash: /usr/lib/qt-3.3/bin:/usr/kerberos/bin:/usr/local/bin:/bin:/usr/bin:/home/ tenouk/bin: No such file or directory
 
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[tenouk@tenouk ~]$
 
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</pre>
 
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Use the su command to change to root user as example below and then execute $PATH as example below.
 
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<pre>
 
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[tenouk@fedora ~]$ su root
 
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Password:
 
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[root@fedora tenouk]# $PATH
 
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bash: /usr/kerberos/sbin:/usr/lib/qt-3.3/bin:/usr/kerberos/bin:/usr/local/bin:/b in:/usr/bin:/home/tenouk/bin: No such file or directory
 
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[root@fedora tenouk]#
 
 
</pre>
 
</pre>
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'''Create extra root user account to your Linux box on debian.'''
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Then try use the su - command and verify with the $PATH as example below.
 
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<pre>
 
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[root@tenouk tenouk]# su - root
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useradd userxxx
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nano /etc/passwd
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[root@tenouk ~]# $PATH
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</pre>
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Edit userid
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-bash: /usr/lib/qt-3.3/bin:/usr/kerberos/sbin:/usr/kerberos/bin:/usr/local/sbin: /usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin:/root/bin: No such file or director y
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<pre>
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userxxx:x:0:0::/home/systemx:/bin/bash
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[root@tenouk ~]#
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</pre>
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</pre>
 
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Note:  The execution of su command, without the hypen ( - ) you inherit the PATH of the current user. Use the su command, with hyphen ( su - ) to get the default PATH of the root user.
 
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Step-by-step how to procedure above tested on:
 
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Operating System: GNU/Linux Fedora Core 4
 
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Kernel Name: Linux
 
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Kernel  Release:  2.6.11-1.1369_FC4
 
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Kernel Version: #1 Thu Jun 2 22:55:56  EDT 2005
 
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Machine Hardware:  i686
 
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Machine Processor:  i686
 
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Hardware Platform:  i386
 
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Shell: GNU bash, version 3.00.16(1)-release (i386-redhat-linux-gnu)
 
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Installation Type: Full  Installation (Custom)
 
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SELinux: Disable
 
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Keywords: root user, create root user account, add root user, create root user, adding root user account, root user account, add root user account.
 
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Good Nite... & Good luck…
 
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[http://www.labtestproject.com/create_root_user_account Source]
 
[http://www.labtestproject.com/create_root_user_account Source]

Latest revision as of 15:17, 17 March 2012

Create extra root user account to your Linux box. 

[root@fedora ~]# adduser -u 0 -o -g 0 -G 0,1,2,3,4,6,10 -M root2 
[root@fedora ~]# passwd root2
Changing password for user root2.
New UNIX password:
Retype new UNIX password:
passwd: all authentication tokens updated successfully. 
[root@fedora ~]# id root2
uid=0(root) gid=0(root) groups=0(root),1(bin),2(daemon),3(sys),4(adm),6(disk),10(wheel)
[root@fedora ~]# less /etc/group
root:x:0:root,root2
bin:x:1:root,bin,daemon,root2
daemon:x:2:root,bin,daemon,root2
sys:x:3:root,bin,adm,root2
adm:x:4:root,adm,daemon,root2
disk:x:6:root,root2
wheel:x:10:root,root2
login as: root2
[email protected]'s password:
Last login: Thu Nov 24 23:48:49 2005 from 10.7.0.112
Could not chdir to home directory /home/root2: No such file or directory
-bash-3.00#
-bash-3.00#
-bash-3.00# su –
[root@fedora ~]#

Create extra root user account to your Linux box on debian. 

useradd userxxx
nano /etc/passwd

Edit userid 

userxxx:x:0:0::/home/systemx:/bin/bash

Source

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