Note Of Linux User

group

create group

add a ‘test’ group

groupadd test

modify group

change ‘test’ group’s name to ‘test2’

groupmod -n test2  test

delete group

delete ‘test2’

groupdel test2

check group

check current user’s group

groups

check ‘test’ user’s group

groups test

check all groups

cat /etc/group

user

create user

add a ‘test’ user

useradd test
passwd test

modify user

change ‘test’ user’s root path

usermod -d /home/test test

add and delete ‘test’ user to ‘test2’

usermod -a -G test test2
usermod -d -G test test2

delete user

delete ‘test2’

userdel test2

check user

id test