Easy learn linux command line- Part 7

Hi to All.we are grateful to begin new series of easy linux command line learning.

we learn how to configure user,s and groups in linux with terminal in this section, like: add a group,change your password, create new user and ... .

Users and Groups Command Description # chage -E 2005-12-31 user1 set deadline for user password    # groupadd [group] create a new group    # groupdel [group] delete a group    # groupmod -n moon sun rename a group from moon to sun    # grpck check correct syntax and file format of '/etc/group' and groups existence    # newgrp - [group] log into a new group to change default group of newly created files    # passwd change password    # passwd user1 change a user password (only by root)    # pwck check correct syntax and file format of '/etc/passwd' and users existence    # useradd -c "User Linux" -g admin -d /home/user1 -s /bin/bash user1 create a new user "user1" belongs "admin" group    # useradd user1 create a new user    # userdel -r user1 delete a user ( '-r' eliminates home directory)    # usermod -c "User FTP" -g system -d /ftp/user1 -s /bin/nologin user1 change user attributes