IPADDR: 172.25.x.100(X 在這裏指您的工作站編號)
NETMASK: 255.255.255.0
GATEWAY: 172.25.x.254
DNS: 172.25.254.254
yum源地址爲：ftp://172.25.x.250/pub/rhel7.0
1.
在進行考試之前,請先重置根用戶密碼爲 examwestos
2.
更改主機名稱爲 station.domainX.example.com(X 在這裏指您的工作站編號)
[root@desktop Desktop]# hostnamectl set-hostname station.domain49.example.com
3
新建組,名稱爲 sysadms,指定其 GID 爲 600
[root@station Desktop]# groupadd -g 600 sysadms
4
新建用戶 tommy,指定 UID 爲 2013,配置該用戶密碼爲 redhat
[root@station Desktop]# useradd -u 2013 tommy
[root@station Desktop]# 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
新建用戶 Jimmy,,並且禁止該用戶交互式登錄,配置該用戶密碼爲 redhat
[root@station Desktop]# useradd -s /sbin/nologin Jimmy
[root@station Desktop]# 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
新建用戶 natasha,harry, 並將這兩個用戶加入到 sysadms 組當中,作爲從屬組,如果需要,則將用戶密碼配置爲 redhat
[root@station Desktop]# useradd -G sysadms natasha
[root@station Desktop]# useradd -G sysadms harry
[root@station Desktop]# id harry
uid=2016(harry) gid=2016(harry) groups=2016(harry),600(sysadms)
[root@station Desktop]# id natasha
uid=2015(natasha) gid=2015(natasha) groups=2015(natasha),600(sysadms)
7
在/home 目錄中創建目錄 materials,配置該目錄的所屬組爲 sysadms,要求隸屬於 sysadms 組當中的成員對該目錄有讀寫權限,在sysadms目錄當中創建的文件或者文件夾,其所屬組也
自動繼承 sysadms 的所屬組
[root@station Desktop]# mkdir /home/materials/
[root@station Desktop]# chgrp sysadms /home/materials/
[root@station Desktop]# chmod g+s /home/materials/
[root@station Desktop]# ll -d /home/materials/
drwxr-sr-x. 2 root sysadms 6 Nov 2 21:59 /home/materials/
拷貝/etc/fstab 文件到/var/tmp 目錄中,設置以下需求
[root@station Desktop]# cp /etc/fstab /var/tmp/
使 harry 用戶對該文件無任何權限
[root@station Desktop]# setfacl -m u:harry:0 /var/tmp/
使 natasha 對該文件有完全控制權限
[root@station Desktop]# setfacl -m u:natasha:7 /var/tmp/
配置文件所屬用戶爲 root
[root@station Desktop]# chown root /var/tmp/
配置文件所屬組爲 root
[root@station Desktop]# chgrp root /var/tmp/
其他所有用戶對文件擁有讀權限
[root@station Desktop]# chmod o+r /var/tmp/
其他所有用戶對文件沒有執行權限
[root@station Desktop]# chmod o-x /var/tmp/
[root@station Desktop]# 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
設置 NTP 客戶端,與172.25.x.254進行時間同步
客戶端：
[root@station Desktop]# vim /etc/chrony.conf
[root@station Desktop]# systemctl stop firewalld
[root@station Desktop]# systemctl disable firewalld
[root@station Desktop]# systemctl restart chronyd.service
服務器：
[root@foundation49 ~]# vim /etc/chrony.conf
[root@foundation49 ~]# systemctl stop firewalld
[root@foundation49 ~]# systemctl disable firewalld
[root@foundation49 ~]# systemctl restart chronyd.service
測試：
[root@station Desktop]# chronyc sources -v
210 Number of sources = 1
10
找出用戶組mail 擁有的文件,並且將它們放到/root/findresults 目錄中
[root@station Desktop]# find / -group mail
find: ‘/proc/3257’: No such file or directory
find: ‘/proc/3275/task/3275/fd/6’: No such file or directory
find: ‘/proc/3275/task/3275/fdinfo/6’: No such file or directory
find: ‘/proc/3275/fd/6’: No such file or directory
find: ‘/proc/3275/fdinfo/6’: No such file or directory
/var/spool/mail
/var/spool/mail/rpc
/var/spool/mail/student
/var/spool/mail/shengchan
/var/spool/mail/caiwu
/var/spool/mail/jishu
/var/spool/mail/tom
/var/spool/mail/leo
/var/spool/mail/admin
/var/spool/mail/mi
/var/spool/mail/iphone
/var/spool/mail/huawei
/var/spool/mail/root
/var/spool/mail/tommy
/var/spool/mail/Jimmy
/var/spool/mail/natasha
/var/spool/mail/harry
11
[root@station Desktop]# cp -r /var/spool/mail/ /root/findresults
在文件/usr/share/mime/packages/freedesktop.org.xml 中查找所有包含 ich 的行,將找
出的行按照先後順序拷貝到/root/lines
文件中,/root/lines 文件不包含空格,並且其中行的內容是源文件/usr/share/mime/packages/freedesktop.org.xml 原始行的準確副本
[root@station Desktop]# grep 'ich' /usr/share/mime/packages/freedesktop.org.xml > /root/lines
[root@station Desktop]# vim /root/lines