1.新建用户并满足以下条件
1）asasin uid=2000
2) sareo uid=2001
3) 这两个用户都属于deho组
4）这两个用户的密码为westos0ol1
5) 新建用户taromati，
6）此用户为系统用户，没有交互式shell
[[email protected] Desktop]# useradd -u 2000 asasin
[[email protected] Desktop]# useradd -u 2001 sareo
[[email protected] Desktop]# groupadd deho
[[email protected] Desktop]# usermod -g deho asasin
[[email protected] Desktop]# usermod -g deho sareo
[[email protected] Desktop]# passwd asasin
[[email protected] Desktop]# passwd sareo
[[email protected] Desktop]# useradd -s /usr/sbin/nologin taromati
2.新建文件/public并满足以下条件
1）所有用户都可以在此目录下建立文件
2）出sareo用户外任何人在此目录中建立的文件都自动归属到deho组中
3）sareo对此目录中新建所有文件均不能作任何操作
4）任何人在此目录中只能删除属于自己的文件
[[email protected] /]# mkdir /public
[[email protected] /]# chmod o+t /public
[[email protected] /]# chmod g+s /public
[[email protected] /]# chgrp deho /public/
[[email protected] /]# setfacl -m u:sareo:rx /public/
[[email protected] /]# getfacl /public/
getfacl: Removing leading ‘/‘ from absolute path names
# file: public/
# owner: root
# group: deho
# flags: -st
user::rwx
user:sareo:r-x
group::r-x
mask::r-x
other::r-x
###############rh124-exam
考试信息：
IPADDR: 172.25.x.100(X 在这里指您的工作站编号)
NETMASK: 255.255.255.0
GATEWAY: 172.25.x.254
DNS: 172.25.254.254
yum源地址为：ftp://172.25.x.250/pub/rhel7.0
1.
在进行考试之前,请先重置根用户密码为 examwestos
passwd
(更改密码)
2.
更改主机名称为 station.domainX.example.com(X 在这里指您的工作站编号)
[[email protected] /]# hostnamectl set-hostname station.domain16.example.com
3
新建组,名称为 sysadms,指定其 GID 为 600
[[email protected] /]# groupadd -g 600 sysadms
4
新建用户 tommy,指定 UID 为 2013,配置该用户密码为 redhat
[[email protected] /]# useradd -u 2013 tommy
[[email protected] /]# passwd tommy
Changing password for user tommy.
New password:
BAD PASSWORD: The password is shorter than 8 characters
Retype new password:
passwd: all authentication tokens updated successfully.
5
新建用户 Jimmy,,并且禁止该用户交互式登录,配置该用户密码为 redhat
[[email protected] /]# useradd -s /usr/sbin/nologin Jimmy
[[email protected] /]# passwd Jimmy
Changing password for user Jimmy.
New password:
BAD PASSWORD: The password is shorter than 8 characters
Retype new password:
passwd: all authentication tokens updated successfully.
6
新建用户 natasha,harry, 并将这两个用户加入到 sysadms 组当中,作为从属组,如果需要,则将用户密码配置为 redhat
[[email protected] /]# useradd natasha
[[email protected] /]# useradd harry
[[email protected] /]# usermod -G sysadms natasha
[[email protected] /]# usermod -G sysadms harry
7在/home 目录中创建目录 materials,配置该目录的所属组为 sysadms,要求隶属于 sysadms 组当中的成员对该目录有读写权限,在sysadms目录当中创建的文件或者文件夹,其所属组也自动继承 sysadms 的所属组
[[email protected] /]# mkdir /home/materials
[[email protected] /]# chgrp sysadms /home/materials/
[[email protected] /]# chmod g+s /home/materials/
[[email protected] /]# chmod g+w /home/materials/
[[email protected] /]# ll -d /home/materials/
drwxrwsr-x. 2 root sysadms 6 Nov 2 08:07 /home/materials/
8
拷贝/etc/fstab 文件到/var/tmp 目录中,设置以下需求
使 harry 用户对该文件无任何权限
使 natasha 对该文件有完全控制权限
配置文件所属用户为 root
配置文件所属组为 root
其他所有用户对文件拥有读权限
其他所有用户对文件没有执行权限
[[email protected] /]# cp /etc/fstab /var/tmp
[[email protected] /]# chown root /var/tmp
[[email protected] /]# chgrp root /var/tmp
[[email protected] /]# chmod o+r /var/tmp/
[[email protected] /]# chmod o-x /var/tmp/
[[email protected] /]# setfacl -m u:harry:0 /var/tmp/
[[email protected] /]# setfacl -m u:natasha:7 /var/tmp/
[[email protected] /]# getfacl /var/tmp/
getfacl: Removing leading ‘/‘ from absolute path names
# file: var/tmp/
# owner: root
# group: root
# flags: --t
user::rwx
user:natasha:rwx
user:harry:---
group::rwx
mask::rwx
other::rw-
9
设置 NTP 客户端,与172.25.x.254进行时间同步
server端
vim /etc/chrony.conf
systemctl stop firewalld
systemctl disable firewalld
systemctl restart chronyd.service
客户端
vim /etc/chrony.conf
systemctl stop firewalld
systemctl disable firewalld
systemctl restart chronyd.service
10
找出用户组mail 拥有的文件,并且将它们放到/root/findresults 目录中
[[email protected] Desktop]# find / -group mail
find: ‘/proc/10644/task/10644/fd/6’: No such file or directory
find: ‘/proc/10644/task/10644/fdinfo/6’: No such file or directory
find: ‘/proc/10644/fd/6’: No such file or directory
find: ‘/proc/10644/fdinfo/6’: No such file or directory
/var/spool/mail
/var/spool/mail/rpc
/var/spool/mail/student
/var/spool/mail/shui
/var/spool/mail/yun
/var/spool/mail/asasin
/var/spool/mail/sareo
/var/spool/mail/taromati
/var/spool/mail/tommy
/var/spool/mail/Jimmy
/var/spool/mail/natasha
/var/spool/mail/harry
[[email protected] Desktop]# cp -r /var/spool/mail /root/findresults
[[email protected] Desktop]# ls /root/findresults/
[[email protected] Desktop]# ls /root/findresults/mail
asasin harry Jimmy natasha rpc sareo shui student taromati tommy yun
11
在文件/usr/share/mime/packages/freedesktop.org.xml 中查找所有包含 ich 的行,将找
出的行按照先后顺序拷贝到/root/lines
文件中,/root/lines 文件不包含空格,并且其中行的内容是源文件/usr/share/mime/packages/freedesktop.org.xml 原始行的准确副本
[[email protected] Desktop]# grep ‘ich‘ /usr/share/mime/packages/freedesktop.org.xml > /root/lines
[[email protected] Desktop]# vim /root/lines
在vim下编辑如下
