1.命令格式:
代码语言:javascript复制cd [目录名]
2.命令功能
切换当前目录至 [目录名]
3. 常用范例
1.进入系统根目录
命令:
代码语言:javascript复制cd /
说明:进入系统根目录,上面命令执行完后拿ls命令看一下,当前目录已经到系统根目录了
输出:
代码语言:javascript复制hc@hc-virtual-machine:~$ pwd
/home/hc
hc@hc-virtual-machine:~$ cd /
hc@hc-virtual-machine:/$ ls
bin dev initrd.img lib64 mnt root snap sys var
boot etc initrd.img.old lost found opt run srv tmp vmlinuz
cdrom home lib media proc sbin swapfile usr
pwd的作用是查询当前所在目录
2. 返回父级目录
命令:
代码语言:javascript复制cd ..
输出:
代码语言:javascript复制hc@hc-virtual-machine:~/PycharmProjects$ pwd
/home/hc/PycharmProjects
hc@hc-virtual-machine:~/PycharmProjects$ cd ..
hc@hc-virtual-machine:~$ pwd
/home/hc
3.进入当前目录的父目录的父目录
命令:
代码语言:javascript复制cd ../..
输出:
代码语言:javascript复制hc@hc-virtual-machine:~/PycharmProjects$ pwd
/home/hc/PycharmProjects
hc@hc-virtual-machine:~/PycharmProjects$ cd ../..
hc@hc-virtual-machine:/home$ pwd
/home
4. 进入当前用户主目录
“当前用户主目录”和“系统根目录”是两个不同的概念。进入当前用户主目录有两个方法。
命令1:
代码语言:javascript复制cd
直接输入cd,然后回车
输出:
代码语言:javascript复制hc@hc-virtual-machine:~/PycharmProjects/my_test$ pwd
/home/hc/PycharmProjects/my_test
hc@hc-virtual-machine:~/PycharmProjects/my_test$ cd
hc@hc-virtual-machine:~$ pwd
/home/hc
上面的命令是我在非root用户下操作的,现在我切换到root用户下再操作一遍
代码语言:javascript复制hc@hc-virtual-machine:~/PycharmProjects/my_test$ sudo su
root@hc-virtual-machine:/home/hc/PycharmProjects/my_test# pwd
/home/hc/PycharmProjects/my_test
root@hc-virtual-machine:/home/hc/PycharmProjects/my_test# cd
root@hc-virtual-machine:~# pwd
/root
命令2:
代码语言:javascript复制cd ~
输出
代码语言:javascript复制hc@hc-virtual-machine:~/PycharmProjects/my_test$ pwd
/home/hc/PycharmProjects/my_test
hc@hc-virtual-machine:~/PycharmProjects/my_test$ cd ~
hc@hc-virtual-machine:~$ pwd
/home/hc
5. 跳转到指定目录
命令
代码语言:javascript复制 cd /home/hc/PycharmProjects/my_test/
输出
代码语言:javascript复制hc@hc-virtual-machine:/$ pwd
/
hc@hc-virtual-machine:/$ cd /home/hc/PycharmProjects/my_test/
hc@hc-virtual-machine:~/PycharmProjects/my_test$ pwd
/home/hc/PycharmProjects/my_test
6.返回进入此目录之前所在的目录
命令:
代码语言:javascript复制cd -
说明:自动跳转到进入此目录之前所在的目录,并输出所在目录名称
输出:
代码语言:javascript复制hc@hc-virtual-machine:/$ pwd
/
hc@hc-virtual-machine:/$ cd /home/hc/PycharmProjects/my_test/
hc@hc-virtual-machine:~/PycharmProjects/my_test$ pwd
/home/hc/PycharmProjects/my_test
hc@hc-virtual-machine:~/PycharmProjects/my_test$ cd -
/
hc@hc-virtual-machine:/$ pwd
/
7. 把上个命令的参数作为cd参数使用
命令:
代码语言:javascript复制cd !$
输出:
代码语言:javascript复制hc@hc-virtual-machine:~/PycharmProjects/my_test$ pwd
/home/hc/PycharmProjects/my_test
hc@hc-virtual-machine:~/PycharmProjects/my_test$ ls /opt/
google
hc@hc-virtual-machine:~/PycharmProjects/my_test$ cd !$
cd /opt/
hc@hc-virtual-machine:/opt$ pwd
/opt