Day2-学习Linux

bio04@ecm-cefa:~$ pwd
/home/bio04
bio04@ecm-cefa:~$ mkdir biosoft
bio04@ecm-cefa:~$ mkdir project
bio04@ecm-cefa:~$ mkdir tmp
bio04@ecm-cefa:~$ mkdir src
bio04@ecm-cefa:~$ ls
biosoft  project  src  tmp
bio04@ecm-cefa:~$ cd tmp
bio04@ecm-cefa:~/tmp$ pwd
/home/bio04/tmp
bio04@ecm-cefa:~/tmp$ cd -
/home/bio04
bio04@ecm-cefa:~$ mkdir rm_test
bio04@ecm-cefa:~$ cd rm_test
bio04@ecm-cefa:~/rm_test$ touch doodle.txt
bio04@ecm-cefa:~/rm_test$ mkdir huahua
bio04@ecm-cefa:~/rm_test$ cd huahua
bio04@ecm-cefa:~/rm_test/huahua$ touch haha.txt
bio04@ecm-cefa:~/rm_test/huahua$ cd -
/home/bio04/rm_test
bio04@ecm-cefa:~/rm_test$ rm doodle.txt
bio04@ecm-cefa:~/rm_test$ rm -r huahua
bio04@ecm-cefa:~/rm_test$ cd -
-bash: cd: /home/bio04/rm_test/huahua: No such file or directory
bio04@ecm-cefa:~/rm_test$ rmdir rm_test
rmdir: failed to remove 'rm_test': No such file or directory
bio04@ecm-cefa:~/rm_test$ pwd
/home/bio04/rm_test
bio04@ecm-cefa:~/rm_test$ cd
bio04@ecm-cefa:~$ cd bio04
-bash: cd: bio04: No such file or directory
bio04@ecm-cefa:~$ pwd
/home/bio04
bio04@ecm-cefa:~$ rmdir rm_test
bio04@ecm-cefa:~$ ls
biosoft  project  src  tmp
bio04@ecm-cefa:~$ cd tmp
bio04@ecm-cefa:~/tmp$ vi chenxing.txt
bio04@ecm-cefa:~/tmp$ cat chenxing.txt 
this class is very useful, i acquire a lot knowledge about linux
I will insist on learning.
bio04@ecm-cefa:~/tmp$ q

Command 'q' not found, but can be installed with:

snap install q                       # version 1.6.3-1, or
apt  install python-q-text-as-data 
apt  install python3-q-text-as-data

See 'snap info q' for additional versions.

bio04@ecm-cefa:~/tmp$ cp chenxing.txt new_file.txt
bio04@ecm-cefa:~/tmp$ ls
chenxing.txt  new_file.txt
bio04@ecm-cefa:~/tmp$ pwd
/home/bio04/tmp
bio04@ecm-cefa:~/tmp$ mv new_file.txt home.txt
bio04@ecm-cefa:~/tmp$ mv home.txt ~
bio04@ecm-cefa:~/tmp$