linux第四天课程总结

cd 冷却时间 cool down

cd 和 pwd

[root@oldboyedu59 ~]# pwd

/root

[root@oldboyedu59 ~]# cd /tmp/

[root@oldboyedu59 tmp]# pwd

/tmp

[root@oldboyedu59 tmp]# cd /etc/sysconfig/network-scripts/

[root@oldboyedu59 network-scripts]# pwd

/etc/sysconfig/network-scripts

~ 当前用户家目录

[root@oldboyedu59 network-scripts]# cd ~

[root@oldboyedu59 ~]# pwd

/root

cd ~ === cd

cd . 进入当前目录

[root@oldboyedu59 etc]# cd /etc/sysconfig/network-scripts/

[root@oldboyedu59 network-scripts]# cd /tmp/

[root@oldboyedu59 tmp]# cd -

/etc/sysconfig/network-scripts

.lck #lock

删除xxxxx.lck目录

[root@oldboyedu59 ~]# mkdir /oldboy

[root@oldboyedu59 ~]# ls /oldboy/

[root@oldboyedu59 ~]# ls -l /oldboy/

total 0

pwd cd mkdir ls 练习题: 根据描述进行操作(发出操作过程)

创建/data 和 /你的名字 (拼音的目录)

进入到/data目录,然后再进入 /你名字的目录

进入到上一次所在目录

回老家

[root@oldboyedu59 ~]# mkdir /data/ /lidao

[root@oldboyedu59 ~]# ls -l /data /lidao/

/data:

total 0

/lidao/:

total 0

[root@oldboyedu59 ~]# cd /data/

[root@oldboyedu59 data]# cd /lidao/

[root@oldboyedu59 lidao]# cd -

/data

[root@oldboyedu59 data]# cd

路径:

一切从根开始

绝对路径: 从根开始的路径 √

/data

/oldboy

/etc/sysconfig/network-scripts

相对路径: 不是从根开始的路径

data

oldboy

[root@oldboyedu59 ~]# mkdir /data/oldboy/lidao/a/b/c/d/e

mkdir: cannot create directory ‘/data/oldboy/lidao/a/b/c/d/e’: No such file or directory

mkdir 命令默认只能创建1层目录创建多层报错

[root@oldboyedu59 ~]# mkdir /data/oldboy/lidao/a/b/c/d/e

mkdir: cannot create directory ‘/data/oldboy/lidao/a/b/c/d/e’: No such file or directory

[root@oldboyedu59 ~]# mkdir -p /data/oldboy/lidao/a/b/c/d/e

[root@oldboyedu59 ~]# ls -l /data/oldboy/lidao/a/b/c/d/e/

total 0

[root@oldboyedu59 ~]# touch /oldboy/oldboy.txt

[root@oldboyedu59 ~]# ls -l /oldboy/

total 0

-rw-r--r--. 1 root root 0 Mar 28 11:46 oldboy.txt

#mkdir与touch题目:

#创建 /oldboy/alex/lidao 和 /data/alex/lidao 两个目录

#在/oldboy/alex/lidao 和 /data/alex/lidao 都创建一个叫oldboy.txt文件

[root@oldboyedu59 ~]# mkdir -p /oldboy/alex/lidao /data/alex/lidao

[root@oldboyedu59 ~]# touch /oldboy/alex/lidao/oldboy.txt /data/alex/lidao/oldboy.txt

[root@oldboyedu59 ~]# ls -l /oldboy/alex/lidao/ /data/alex/lidao/

/data/alex/lidao/:

total 0

-rw-r--r--. 1 root root 0 Mar 28 11:58 oldboy.txt

/oldboy/alex/lidao/:

total 0

-rw-r--r--. 1 root root 0 Mar 28 11:58 oldboy.txt

echo

{} 生成序列

[root@oldboyedu59 ~]# echo oldboy

oldboy

[root@oldboyedu59 ~]# echo {1..10}

1 2 3 4 5 6 7 8 9 10

[root@oldboyedu59 ~]# echo {a..z}

a b c d e f g h i j k l m n o p q r s t u v w x y z

[root@oldboyedu59 ~]# echo oldboy{1..10}

oldboy1 oldboy2 oldboy3 oldboy4 oldboy5 oldboy6 oldboy7 oldboy8 oldboy9 oldboy10

特殊:

[root@oldboyedu59 ~]# echo {01..10}

01 02 03 04 05 06 07 08 09 10

显示出 oldboy01.txt oldboy02.txt oldboy03.txt ..... oldboy10.txt

[root@oldboyedu59 ~]# echo oldboy{01..10}.txt

oldboy01.txt oldboy02.txt oldboy03.txt oldboy04.txt oldboy05.txt oldboy06.txt oldboy07.txt oldboy08.txt oldboy09.txt oldboy10.txt

[root@oldboyedu59 ~]# touch oldboy{01..10}.txt

[root@oldboyedu59 ~]# ls -l

total 16

-rw-------. 1 root root 1341 Mar 26 11:46 anaconda-ks.cfg

-rw-r--r--. 1 root root 10213 Mar 28 10:28 grep.txt

-rw-r--r--. 1 root root 0 Mar 28 12:16 oldboy01.txt

-rw-r--r--. 1 root root 0 Mar 28 12:16 oldboy02.txt

-rw-r--r--. 1 root root 0 Mar 28 12:16 oldboy03.txt

-rw-r--r--. 1 root root 0 Mar 28 12:16 oldboy04.txt

-rw-r--r--. 1 root root 0 Mar 28 12:16 oldboy05.txt

-rw-r--r--. 1 root root 0 Mar 28 12:16 oldboy06.txt

-rw-r--r--. 1 root root 0 Mar 28 12:16 oldboy07.txt

-rw-r--r--. 1 root root 0 Mar 28 12:16 oldboy08.txt

-rw-r--r--. 1 root root 0 Mar 28 12:16 oldboy09.txt

-rw-r--r--. 1 root root 0 Mar 28 12:16 oldboy10.txt

drwxr-xr-x. 2 root root 6 Mar 27 20:31 oldgirl

drwxr-xr-x. 2 root root 6 Mar 27 20:33 oldman

[root@oldboyedu59 ~]# cp /oldboy/oldboy.txt /tmp/

[root@oldboyedu59 ~]# cp /oldboy /tmp/

cp: omitting directory ‘/oldboy’

忽略目录

cp命令默认无法复制目录

[root@oldboyedu59 ~]# cp -r /oldboy/ /tmp/

[root@oldboyedu59 ~]# ls -l /tmp/

total 4

-rwx------. 1 root root 836 Mar 26 11:46 ks-script-pzO18O

drwxr-xr-x. 3 root root 36 Mar 28 12:32 oldboy

drwxr-xr-x. 2 root root 6 Mar 27 20:30 oldboy59

-rw-r--r--. 1 root root 0 Mar 28 12:24 oldboy.txt

drwx------. 2 root root 6 Mar 26 11:56 vmware-root_6737-3853947227

drwx------. 2 root root 6 Mar 27 08:37 vmware-root_6762-2864843553

-rw-------. 1 root root 0 Mar 26 11:37 yum.log

[root@oldboyedu59 ~]# ls -l /oldboy/oldboy.txt

-rw-r--r--. 1 root root 0 Mar 28 11:47 /oldboy/oldboy.txt

[root@oldboyedu59 ~]# cp /oldboy/oldboy.txt /oldboy/oldboy.txt.bak

[root@oldboyedu59 ~]# ls -l /oldboy/

total 0

drwxr-xr-x. 3 root root 19 Mar 28 11:57 alex

-rw-r--r--. 1 root root 0 Mar 28 11:47 oldboy.txt

-rw-r--r--. 1 root root 0 Mar 28 12:38 oldboy.txt.bak

提前安装(需要你虚拟机可以上网)

yum install -y tree vim bash-completion

linux第四天课程总结

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