上午考

yum install -y xorg* gnome* glx*

init5

e

linux16 这行最后，rd.break

Ctrl+X

mount -o remount,rw /sysroot

chroot /sysroot

echo "flectrag" | passwd --stdin root

touch /.autorelabel

exit

reboot

vim /etc/hostname

nm-connection-editor

nmtui

vim /etc/sysconfig/network-scripts/ifcfg-eno16777728

ifconfig查看

1

vim /etc/selinux/config

SELINUX=enforcing

cat /etc/selinux/config

2

vim /etc/yum.repos.d/rhcsa.repo

[rhcsa]

name=rhcsa

baseurl=http://rhgls.domain1.example.com/rhel

enabled=1

gpgcheck=0

3

lvscan

cat /etc/fstab

mkdir /finance

是ext4格式的时候：

umount /dev/linuxprobe/vo

lvextend -L 300M /dev/linuxprobe/vo

e2fsck -f /dev/linuxprobe/vo

resize2fs /dev/linuxprobe/vo

mount /dev/linuxprobe/vo /finance

是xfs格式时不用取消挂载

lvextend -L 300M /dev/linuxprobe/vo

xfs_growfs /dev/linuxprobe/vo

df -h

blkid 查看格式

4

groupadd adminuser

useradd natasha -G adminuser

useradd harry -G adminuser

useradd sarah -s /sbin/nologin

echo "flectrag" | passwd --stdin natasha

echo "flectrag" | passwd --stdin harry

echo "flectrag" | passwd --stdin sarah

5

cp /etc/fstab /var/tmp/fstab

ls -al /var/tmp/fstab

chmod o+r /var/tmp/fstab

setfacl -m u:natasha:rw /var/tmp/fstab

setfacl -m u:harry:- /var/tmp/fstab

getfacl /var/tmp/fstab

6

crontab -e -u natasha

23 14 * * * /bin/echo hiya

crontab -l -u natasha

7

mkdir /home/admins

chown :adminuser /home/admins

chmod -Rf 770  /home/admins

chmod g+s /home/admins

ll -d /home/admins

8

vim /etc/yum.repos.d/update.repo

[update]

name=update

baseurl=http://rhgls.domain1.example.com/updates

enabled=1

gpgcheck=0

#yum clean all

#yum makecache 

#yum update kernel -y

9

yum -y install openldap openldap-clients sssd authconfig-gtk

authconfig-gtk

ssh ldapuser1@localhost

10

yum install ntp

vim /etc/chrony.conf

//将原先3-6行的数据信息删除，然后追加下面参数：

server rhgls.domain1.example.com iburst

systemctl restart chronyd

systemctl enable chronyd

11

yum install autofs

mkdir /home/guests

vim /etc/auto.master

/home/guests /etc/auto.guests

vim /etc/auto.guests

*       -fstype=nfs,rw,vers=3 host.domain1.example.com:/home/guests/&

vim /etc/auto.guests

systemctl restart autofs

systemctl enable autofs

ssh ldapuser1@localhost

12

useradd jack -u 2000

13

fdisk /dev/sdb

n

e

4

n

1

5

回车

+512M

w

partprobe

partprobe

mkswap /dev/sdb5

vim /etc/fstab

/dev/sdb5 swap swap defaults 0 0

mount -a

free -m

swapon -a

free -m

14

mkdir /findfiles

find / -user ronny -exec cp -Ra {} /findfiles ;

15

grep seismic /usr/share/dict/words

grep seismic /usr/share/dict/words > /root/filelist

16

tar -cjvf /root/backup.tar.bz2 /etc

tar -czvf /root/backup.tar.gz /etc

常见压缩格式： .tar或.tar.gz或.tar.bz2

-c 打包

-z Gzip压缩格式

-j bzip2压缩格式

-v 显示过程信息

-f 压缩包名称，必须放到参数最后一位

压缩：tar  -czvf etc.tar.gz /etc 

解压：tar  xzvf   etc.tar.gz  -C  /root/etc 

-C 大写C 指定要解压到哪个指定的目录去

17

fdisk /dev/sdb

n

1

6

回车

+200M

w

partprobe

partprobe

pvcreate /dev/sdb6

vgcreate -s 16M datastore /dev/sdb6

lvcreate -L 160M -n database datastore

mkfs.ext4 /dev/datastore/database

mkdir /mnt/database

vim /etc/fstab

/dev/datastore/database  /mnt/database       ext4    defaults    0 0

mount -a

df -h

搞定。吃饭去喽