DAY2-Linux入门

bio07@ecm-cefa:~$ pwd
/home/bio07

bio07@ecm-cefa:~$ mkdir project #存放生信项目
bio07@ecm-cefa:~$ mkdir tmp #存放杂七杂八
bio07@ecm-cefa:~$ mkdir src #存放源代码
bio07@ecm-cefa:~$ mkdir biosoft #存放生信软件
bio07@ecm-cefa:~$ ls 
project  src  tmp   biosoft

bio07@ecm-cefa:~$ rm biosoft
rm: cannot remove 'biosoft': Is a directory   #biosoft不是一个文件
bio07@ecm-cefa:~$ rm -r biosoft  #或者 rmdir biosoft
bio07@ecm-cefa:~$ ls
project  src  tmp
#删除文件 rm
#删除空目录 rmdir
#删除非空目录 rm -r

bio07@ecm-cefa:~$ cd tmp #改变工作路径到tmp
bio07@ecm-cefa:~/tmp$ pwd 
/home/bio07/tmp
bio07@ecm-cefa:~/tmp$ cd - #回到主目录
/home/bio07

bio07@ecm-cefa:~$ mkdir rm_test
bio07@ecm-cefa:~$ cd rm_test
bio07@ecm-cefa:~/rm_test$ touch doodle.txt   #touch为新建文件命令
bio07@ecm-cefa:~/rm_test$ rm doodle.txt      #删除doodle.txt文件
bio07@ecm-cefa:~/rm_test$ mkdir huahua
bio07@ecm-cefa:~/rm_test$ cd huahua
bio07@ecm-cefa:~/rm_test/huahua$ touch haha.txt      #新建haha.txt,总结rm_test里面有huahua，huahua里面有haha.txt
bio07@ecm-cefa:~/rm_test/huahua$ cd     #返回主目录
bio07@ecm-cefa:~$ ls
biosoft  project  rm_test  src  tmp
bio07@ecm-cefa:~$ cd rm_test
bio07@ecm-cefa:~/rm_test$ ls
huahua
bio07@ecm-cefa:~/rm_test$ rm huahua
rm: cannot remove 'huahua': Is a directory
bio07@ecm-cefa:~/rm_test$ rmdir huahua
rmdir: failed to remove 'huahua': Directory not empty    #huahua里面有文件haha.txt
bio07@ecm-cefa:~/rm_test$ rm -r huahua
bio07@ecm-cefa:~/rm_test$ ls
bio07@ecm-cefa:~$ rmdir rm_test
bio07@ecm-cefa:~$ ls
biosoft  project  src  tmp

bio07@ecm-cefa:~$ cd tmp
bio07@ecm-cefa:~/tmp$ vi hello_world.txt

hello world
my name is gigi, i`m here to learn something about the world.
We know the program is so difficult to learn, and we can change our mind to think about it.
The R has many rules and we may not deal with it, we should learn how to use the search engine to solve our problems.We can also ask somebody else for help.

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                                                 5,0-1         
:x 退出并保存

bio07@ecm-cefa:~/tmp$ cat hello_world.txt 
hello world
my name is gigi, i`m here to learn something about the world.
We know the program is so difficult to learn, and we can change our mind to think about it.
The R has many rules and we may not deal with it, we should learn how to use the search engine to solve our problems.We can also ask somebody else for help.

bio07@ecm-cefa:~/tmp$ head -n3 hello_world.txt 
hello world
my name is gigi, i`m here to learn something about the world.
We know the program is so difficult to learn, and we can change our mind to think about it.

bio07@ecm-cefa:~/tmp$ cp hello_world.txt new_file.txt    #将hello_world.txt复制文件为new_file.txt

bio07@ecm-cefa:~/tmp$ mv new_file.txt home.txt     #将new_file.txt名字换成home.txt
bio07@ecm-cefa:~/tmp$ mv home.txt ~   #移动home.txt到主目录中
bio07@ecm-cefa:~/tmp$ cd      #回到主目录中
bio07@ecm-cefa:~$ ls
biosoft  home.txt  project  src  tmp