my 2nd year exams are over. now i am preparing for my redhat certification.
i just want to update my preparation status:
1) started with installation process: i am familiar with the normal installation process giving the root and swap.
today i tried another method by separating the /boot partition and gave it 500 MB. i am practicing it on vmware workstation. and i proceeded the normal graphical installation. unchecked the unecessary stuffs like gnome graphical interface, internet tools etc..
2) user and group administration:
useradd – to add user (options: -u for userid, -g for groupid, -G for secondary group id)
usermod – to modify setting for user
userdel – to delete user ( options: -r to delete everything related to a user)
groupadd – to add a group
groupdel – to delete a group
groupmod – to modify settings for a group (-n to change group name)
to change login name: usermod -l <new one> <oldone>
to lock a password: usermod -L <username>
to unlock : usermod -U <username>
******important files ***************
/etc/passwd – user account information
/etc/shadow – secure user account information
/etc/group – group information
/etc/gshadow – secure group information