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1、虚拟机地址

192.168.75.128/24

2、获取当前时间

[root@chenhaoze ~]# date
Sat Jan 11 16:55:42 CST 2025

3、修改时间

[root@chenhaoze ~]# date -s "2023 - 01 - 01 12:00:00"
Sun Jan  1 12:00:00 CST 2023

4、切换目录和查看目录

[root@chenhaoze ~]# cd/root/room 
-bash: cd/root/room: No such file or directory
[root@chenhaoze ~]# ls
 222      4.txt   8.txt.gz    Music       Videos       anaconda-ks.cfg   yasuo3.zip
'222^C'   444     Desktop     Pictures    a.txt        error.txt         zhengque.txt
 3.txt    555     Documents   Public      a_hard.txt   file.txt
 333      7.txt   Downloads   Templates   aaa          ip.log3

5、打开当前的路径

[root@chenhaoze ~]# pwd
/root

6、创建

[root@chenhaoze ~]# # mkdir -p /root/dir1/
[root@chenhaoze ~]# ls
 222      4.txt   8.txt.gz    Music       Videos       anaconda-ks.cfg   ip.log
'222^C'   444     Desktop     Pictures    a.txt        dir1              ly
 3.txt    555     Documents   Public      a_hard.txt   error.txt         yasuo3.zip
 333      7.txt   Downloads   Templates   aaa          file.txt          zhengque.txt
[root@chenhaoze ~]#  mkdir -p /root/dir2
[root@chenhaoze ~]# ls
 222      444        Documents   Templates    anaconda-ks.cfg   ip.log
'222^C'   555        Downloads   Videos       dir1              ly
 3.txt    7.txt      Music       a.txt        dir2              yasuo3.zip
 333      8.txt.gz   Pictures    a_hard.txt   error.txt         zhengque.txt
 4.txt    Desktop    Public      aaa          file.txt

7、在/root下创建guazai1、guazai2、guazai3…一直到guazai10目录

[root@chenhaoze ~]# for i in {1..10}; do mkdir /root/guazai$i; done
[root@chenhaoze ~]# ls
 222      555         Music       a_hard.txt        file.txt   guazai5   ly
'222^C'   7.txt       Pictures    aaa               guazai1    guazai6   shadow
 3.txt    8.txt.gz    Public      anaconda-ks.cfg   guazai10   guazai7   yasuo3.zip
 333      Desktop     Templates   dir1              guazai2    guazai8   ys.tar.gz
 4.txt    Documents   Videos      dir2              guazai3    guazai9   zhengque.txt
 444      Downloads   a.txt       error.txt         guazai4    ip.log

8、删除

[root@chenhaoze ~]# rm -r /root/dir1/dir2
rm: remove directory '/root/dir1/dir2'? y

9、创建一个以自己的名字命名的文件

[root@chenhaoze ~]# touch ./ly

10、查看/etc/passwd文件的内容，并过滤出包含root的行

[root@chenhaoze ~]# grep 'root' /ect/passwd

11、使用echo命令输出"Hello, World!"到屏幕上

[root@chenhaoze ~]# echo "Hello,World!"
Hello,World!

12、提取/etc/passwd第一列的内容

[root@chenhaoze ~]# cut -d':' -f1 /etc/passwd
root
bin
daemon
adm
lp
sync
shutdown
halt
mail
operator
games
ftp
nobody
tss
systemd-coredump
dbus
polkitd
avahi
colord
rtkit
pipewire
clevis
sssd
geoclue
flatpak
setroubleshoot
libstoragemgmt
gdm
cockpit-wsinstance
gnome-initial-setup
sshd
chrony
dnsmasq
tcpdump
redhat

13、为/root/anaconda-ks.cfg 文件创建软链接到/下并命名为a.cfg

[root@chenhaoze ~]# ln -s /root/anaconda-ks.cfg /a.cfg

14、复制/etc/shadow文件到/root下

[root@chenhaoze ~]# cp /etc/shadow /root/
[root@chenhaoze ~]# ls
 222      444        Documents   Templates    anaconda-ks.cfg   ip.log
'222^C'   555        Downloads   Videos       dir1              ly
 3.txt    7.txt      Music       a.txt        dir2              shadow
 333      8.txt.gz   Pictures    a_hard.txt   error.txt         yasuo3.zip
 4.txt    Desktop    Public      aaa          file.txt          zhengque.txt

15、查找以repo结尾的文件

[root@chenhaoze ~]# find / -type f -name '*repo'
/run/media/root/RHEL-9-5-0-BaseOS-x86_64/media.repo
/etc/yum.repos.d/redhat.repo
/var/lib/rhsm/repo_server_val/redhat.repo

16、把/etc/gshadow 和/root/home打包压缩为/root/ys.tar.gz

[root@chenhaoze ~]# tar -czf /root/ys.tar.gz /etc/gshadow /root/home
tar: Removing leading `/' from member names
tar: Removing leading `/' from hard link targets
tar: /root/home: Cannot stat: No such file or directory
tar: Exiting with failure status due to previous errors