码迷,mamicode.com
首页 > 系统相关 > 详细

Linux常用基本命令( touch )

时间:2018-05-01 20:52:46      阅读:270      评论:0      收藏:0      [点我收藏+]

标签:一个   change   文件的   linux   文件   class   stat   option   color   

touch命令:

作用:创建空文件,或者改变文件的时间戳属性

格式: touch [option] [file]

1,同时创建一个或者多个空文件

ghostwu@dev:~/linux/mkdir$ ls
ghostwu@dev:~/linux/mkdir$ touch a.txt
ghostwu@dev:~/linux/mkdir$ ls
a.txt
ghostwu@dev:~/linux/mkdir$ touch b.txt c.txt
ghostwu@dev:~/linux/mkdir$ ls
a.txt  b.txt  c.txt
ghostwu@dev:~/linux/mkdir$ touch {1..5}.txt
ghostwu@dev:~/linux/mkdir$ ls
1.txt  2.txt  3.txt  4.txt  5.txt  a.txt  b.txt  c.txt

2,创建文件,并用stat查看文件的属性状态信息

ghostwu@dev:~/linux/mkdir$ touch ghostwu.txt
ghostwu@dev:~/linux/mkdir$ stat ghostwu.txt 
  File: ghostwu.txt
  Size: 0             Blocks: 0          IO Block: 4096   regular empty file
Device: 807h/2055d    Inode: 9569451     Links: 1
Access: (0664/-rw-rw-r--)  Uid: ( 1000/ ghostwu)   Gid: ( 1000/ ghostwu)
Access: 2018-05-01 17:25:16.439856937 +0800
Modify: 2018-05-01 17:25:16.439856937 +0800
Change: 2018-05-01 17:25:16.439856937 +0800
 Birth: -

最后有3个时间

Access time: 最后访问时间,查看文件的内容时,这个时间会改变,使用cat命令查看文件时,可以看出Access time已经变了

ghostwu@dev:~/linux/mkdir$ stat ghostwu.txt 
  File: ghostwu.txt
  Size: 0             Blocks: 0          IO Block: 4096   regular empty file
Device: 807h/2055d    Inode: 9569451     Links: 1
Access: (0664/-rw-rw-r--)  Uid: ( 1000/ ghostwu)   Gid: ( 1000/ ghostwu)
Access: 2018-05-01 17:25:16.439856937 +0800
Modify: 2018-05-01 17:25:16.439856937 +0800
Change: 2018-05-01 17:25:16.439856937 +0800
 Birth: -
ghostwu@dev:~/linux/mkdir$ cat ghostwu.txt 
ghostwu@dev:~/linux/mkdir$ stat ghostwu.txt 
  File: ghostwu.txt
  Size: 0             Blocks: 0          IO Block: 4096   regular empty file
Device: 807h/2055d    Inode: 9569451     Links: 1
Access: (0664/-rw-rw-r--)  Uid: ( 1000/ ghostwu)   Gid: ( 1000/ ghostwu)
Access: 2018-05-01 17:27:51.887215139 +0800
Modify: 2018-05-01 17:25:16.439856937 +0800
Change: 2018-05-01 17:25:16.439856937 +0800
 Birth: -

 

Modify time:最后修改时间,修改文件内容,文件的修改时间会改变。访问时间和状态改变时间 也发生变化

ghostwu@dev:~/linux/mkdir$ stat ghostwu.txt 
  File: ghostwu.txt
  Size: 0             Blocks: 0          IO Block: 4096   regular empty file
Device: 807h/2055d    Inode: 9569451     Links: 1
Access: (0664/-rw-rw-r--)  Uid: ( 1000/ ghostwu)   Gid: ( 1000/ ghostwu)
Access: 2018-05-01 17:27:51.887215139 +0800
Modify: 2018-05-01 17:25:16.439856937 +0800
Change: 2018-05-01 17:25:16.439856937 +0800
 Birth: -
ghostwu@dev:~/linux/mkdir$ vim ghostwu.txt 
ghostwu@dev:~/linux/mkdir$ stat ghostwu.txt 
  File: ghostwu.txt
  Size: 5             Blocks: 8          IO Block: 4096   regular file
Device: 807h/2055d    Inode: 9569550     Links: 1
Access: (0664/-rw-rw-r--)  Uid: ( 1000/ ghostwu)   Gid: ( 1000/ ghostwu)
Access: 2018-05-01 17:29:34.982228802 +0800
Modify: 2018-05-01 17:29:34.982228802 +0800
Change: 2018-05-01 17:29:35.018231392 +0800
 Birth: -

 

Change time:状态改变时间,修改文件内容,移动文件,或者改变文件属性等,文件的change time会发生改变.

1,移动文件( 重命名 ), change time 发生改变:

ghostwu@dev:~/linux/mkdir$ stat ghostwu.txt 
  File: ghostwu.txt
  Size: 5             Blocks: 8          IO Block: 4096   regular file
Device: 807h/2055d    Inode: 9569550     Links: 1
Access: (0664/-rw-rw-r--)  Uid: ( 1000/ ghostwu)   Gid: ( 1000/ ghostwu)
Access: 2018-05-01 17:29:34.982228802 +0800
Modify: 2018-05-01 17:29:34.982228802 +0800
Change: 2018-05-01 17:29:35.018231392 +0800
 Birth: -
ghostwu@dev:~/linux/mkdir$ mv ghostwu.txt ghostwu2.txt
ghostwu@dev:~/linux/mkdir$ stat ghostwu2.txt 
  File: ghostwu2.txt
  Size: 5             Blocks: 8          IO Block: 4096   regular file
Device: 807h/2055d    Inode: 9569550     Links: 1
Access: (0664/-rw-rw-r--)  Uid: ( 1000/ ghostwu)   Gid: ( 1000/ ghostwu)
Access: 2018-05-01 17:29:34.982228802 +0800
Modify: 2018-05-01 17:29:34.982228802 +0800
Change: 2018-05-01 17:32:25.392863791 +0800

2,修改文件的权限,change time发生了改变

ghostwu@dev:~/linux/mkdir$ stat ghostwu2.txt 
  File: ghostwu2.txt
  Size: 5             Blocks: 8          IO Block: 4096   regular file
Device: 807h/2055d    Inode: 9569550     Links: 1
Access: (0664/-rw-rw-r--)  Uid: ( 1000/ ghostwu)   Gid: ( 1000/ ghostwu)
Access: 2018-05-01 17:29:34.982228802 +0800
Modify: 2018-05-01 17:29:34.982228802 +0800
Change: 2018-05-01 17:32:25.392863791 +0800
 Birth: -
ghostwu@dev:~/linux/mkdir$ chmod 777 ghostwu2.txt 
ghostwu@dev:~/linux/mkdir$ stat ghostwu2.txt 
  File: ghostwu2.txt
  Size: 5             Blocks: 8          IO Block: 4096   regular file
Device: 807h/2055d    Inode: 9569550     Links: 1
Access: (0777/-rwxrwxrwx)  Uid: ( 1000/ ghostwu)   Gid: ( 1000/ ghostwu)
Access: 2018-05-01 17:29:34.982228802 +0800
Modify: 2018-05-01 17:29:34.982228802 +0800
Change: 2018-05-01 17:33:31.602584110 +0800
 Birth: -

touch -m修改文件的modify和change时间

ghostwu@dev:~/linux/mkdir$ stat ghostwu2.txt 
  File: ghostwu2.txt
  Size: 5             Blocks: 8          IO Block: 4096   regular file
Device: 807h/2055d    Inode: 9569550     Links: 1
Access: (0777/-rwxrwxrwx)  Uid: ( 1000/ ghostwu)   Gid: ( 1000/ ghostwu)
Access: 2018-05-01 17:29:34.982228802 +0800
Modify: 2018-05-01 17:29:34.982228802 +0800
Change: 2018-05-01 17:33:31.602584110 +0800
 Birth: -
ghostwu@dev:~/linux/mkdir$ touch -m ghostwu2.txt 
ghostwu@dev:~/linux/mkdir$ stat ghostwu2.txt 
  File: ghostwu2.txt
  Size: 5             Blocks: 8          IO Block: 4096   regular file
Device: 807h/2055d    Inode: 9569550     Links: 1
Access: (0777/-rwxrwxrwx)  Uid: ( 1000/ ghostwu)   Gid: ( 1000/ ghostwu)
Access: 2018-05-01 17:29:34.982228802 +0800
Modify: 2018-05-01 17:34:31.678864985 +0800
Change: 2018-05-01 17:34:31.678864985 +0800

touch -d修改创建后的文件的修改时间

ghostwu@dev:~/linux/mkdir$ ls -lh ghostwu2.txt 
-rwxrwxrwx 1 ghostwu ghostwu 5 5月   1 17:34 ghostwu2.txt
ghostwu@dev:~/linux/mkdir$ touch -d 20190218 ghostwu2.txt 
ghostwu@dev:~/linux/mkdir$ ls -lh ghostwu2.txt 
-rwxrwxrwx 1 ghostwu ghostwu 5 2月  18  2019 ghostwu2.txt
ghostwu@dev:~/linux/mkdir$ stat ghostwu2.txt 
  File: ghostwu2.txt
  Size: 5             Blocks: 8          IO Block: 4096   regular file
Device: 807h/2055d    Inode: 9569550     Links: 1
Access: (0777/-rwxrwxrwx)  Uid: ( 1000/ ghostwu)   Gid: ( 1000/ ghostwu)
Access: 2019-02-18 00:00:00.000000000 +0800
Modify: 2019-02-18 00:00:00.000000000 +0800
Change: 2018-05-01 17:37:13.031347481 +0800
 Birth: -

 

Linux常用基本命令( touch )

标签:一个   change   文件的   linux   文件   class   stat   option   color   

原文地址:https://www.cnblogs.com/ghostwu/p/8976883.html

(0)
(0)
   
举报
评论 一句话评论(0
登录后才能评论!
© 2014 mamicode.com 版权所有  联系我们:gaon5@hotmail.com
迷上了代码!