#scp命令

1.命令简介
Linux ls命令用于显示指定工作目录下之内容（列出目前工作目录所含之文件及子目录)。

2.命令格式
ls  [ 选项 ]  "参数..."

3.常用选项
-a 显示所有文件及目录 (ls内定将文件名或目录名称开头为"."的视为隐藏档，不会列出)
-l 除文件名称外，亦将文件型态、权限、拥有者、文件大小等资讯详细列出
-r 将文件以相反次序显示(原定依英文字母次序)
-t 将文件依建立时间之先后次序列出
-A 同 -a ，但不列出 "." (目前目录) 及 ".." (父目录)
-F 在列出的文件名称后加一符号；例如可执行档则加 "*", 目录则加 "/"
-R 若目录下有文件，则以下之文件亦皆依序列出

4.支持案例

# ls -lh				 #查看文件属性统计占用磁盘大小
total 6.3G
drwxr-xr-x  8 root root 4.0K Aug 19  2019 bak
-rw-r--r--  1 root root  24K May  4 15:33 exclude.txt
drwxr-xr-x 21 root root 4.0K Jul 27 13:23 note
-rw-r--r--  1 root root  11M May 21 23:41 python-3.8.3-docs-html.zip
drwxr-xr-x  3 root root 4.0K Jul  7 17:54 scripts
drwxr-xr-x  3 root root 4.0K Mar 24 12:34 software
drwxr-xr-x  2 root root 4.0K Jun 29 18:48 test
-rw-r--r--  1 root root 6.3G Apr 13 22:14 tmose.tar.gz

# ls -lht				 #查看文件属性统计占用磁盘大小并按时间倒序排列
total 6.3G
drwxr-xr-x 21 root root 4.0K Jul 27 13:23 note
drwxr-xr-x  3 root root 4.0K Jul  7 17:54 scripts
drwxr-xr-x  2 root root 4.0K Jun 29 18:48 test
-rw-r--r--  1 root root  11M May 21 23:41 python-3.8.3-docs-html.zip
-rw-r--r--  1 root root  24K May  4 15:33 exclude.txt
-rw-r--r--  1 root root 6.3G Apr 13 22:14 tmose.tar.gz
drwxr-xr-x  3 root root 4.0K Mar 24 12:34 software
drwxr-xr-x  8 root root 4.0K Aug 19  2019 bak


# ls -lhtr				#查看文件属性统计占用磁盘大小并按时间倒序排列
total 6.3G
drwxr-xr-x  8 root root 4.0K Aug 19  2019 bak
drwxr-xr-x  3 root root 4.0K Mar 24 12:34 software
-rw-r--r--  1 root root 6.3G Apr 13 22:14 tmose.tar.gz
-rw-r--r--  1 root root  24K May  4 15:33 exclude.txt
-rw-r--r--  1 root root  11M May 21 23:41 python-3.8.3-docs-html.zip
drwxr-xr-x  2 root root 4.0K Jun 29 18:48 test
drwxr-xr-x  3 root root 4.0K Jul  7 17:54 scripts
drwxr-xr-x 21 root root 4.0K Jul 27 13:23 note

# ls -a
.   bak            .bash_logout   .bashrc  .config  exclude.txt  note  .pki              python-3.8.3-docs-html.zip  software  .tcshrc  tmose.tar.gz
..  .bash_history  .bash_profile  .cache   .cshrc   .lesshst     .pip  .pydistutils.cfg  scripts                     .ssh      test     .viminfo


# ls -al
total 6535572
dr-xr-x---. 12 root root       4096 Jul 27 13:23 .
dr-xr-xr-x. 19 root root       4096 Jul 27 13:33 ..
drwxr-xr-x   8 root root       4096 Aug 19  2019 bak
-rw-------   1 root root      28768 Jul 27 13:33 .bash_history
-rw-r--r--.  1 root root         18 Dec 29  2013 .bash_logout
-rw-r--r--.  1 root root        176 Dec 29  2013 .bash_profile
-rw-r--r--.  1 root root        176 Dec 29  2013 .bashrc
drwxr-xr-x   3 root root       4096 Mar  7  2019 .cache
drwxr-xr-x   3 root root       4096 Mar  7  2019 .config
-rw-r--r--.  1 root root        100 Dec 29  2013 .cshrc
-rw-r--r--   1 root root      24369 May  4 15:33 exclude.txt
-rw-------   1 root root         42 Nov  5  2019 .lesshst
drwxr-xr-x  21 root root       4096 Jul 27 13:23 note
drwxr-xr-x   2 root root       4096 Mar 20 11:01 .pip
drwxr-----   3 root root       4096 Apr 13 22:58 .pki
-rw-r--r--   1 root root         73 Mar 20 11:01 .pydistutils.cfg
-rw-r--r--   1 root root   10794009 May 21 23:41 python-3.8.3-docs-html.zip
drwxr-xr-x   3 root root       4096 Jul  7 17:54 scripts
drwxr-xr-x   3 root root       4096 Mar 24 12:34 software
drwx------   2 root root       4096 Mar 20 13:17 .ssh
-rw-r--r--.  1 root root        129 Dec 29  2013 .tcshrc
drwxr-xr-x   2 root root       4096 Jun 29 18:48 test
-rw-r--r--   1 root root 6681475371 Apr 13 22:14 tmose.tar.gz
-rw-------   1 root root       6569 Jul 27 13:23 .viminfo

# ls -l --full-time			#查看文件完整时间
total 6535472
drwxr-xr-x  8 root root       4096 2019-08-19 01:50:13.000000000 +0800 bak
-rw-r--r--  1 root root      24369 2020-05-04 15:33:53.695421817 +0800 exclude.txt
drwxr-xr-x 21 root root       4096 2020-07-27 13:23:19.469482962 +0800 note
-rw-r--r--  1 root root   10794009 2020-05-21 23:41:51.626735244 +0800 python-3.8.3-docs-html.zip
drwxr-xr-x  3 root root       4096 2020-07-07 17:54:17.907461742 +0800 scripts
drwxr-xr-x  3 root root       4096 2020-03-24 12:34:13.274628346 +0800 software
drwxr-xr-x  2 root root       4096 2020-06-29 18:48:45.920634699 +0800 test
-rw-r--r--  1 root root 6681475371 2020-04-13 22:14:25.888252588 +0800 tmose.tar.gz

# ll  -t --full-time			#查看完整时间并按时间倒序排列
total 6535472
drwxr-xr-x 21 root root       4096 2020-07-27 13:23:19.469482962 +0800 note
drwxr-xr-x  3 root root       4096 2020-07-07 17:54:17.907461742 +0800 scripts
drwxr-xr-x  2 root root       4096 2020-06-29 18:48:45.920634699 +0800 test
-rw-r--r--  1 root root   10794009 2020-05-21 23:41:51.626735244 +0800 python-3.8.3-docs-html.zip
-rw-r--r--  1 root root      24369 2020-05-04 15:33:53.695421817 +0800 exclude.txt
-rw-r--r--  1 root root 6681475371 2020-04-13 22:14:25.888252588 +0800 tmose.tar.gz
drwxr-xr-x  3 root root       4096 2020-03-24 12:34:13.274628346 +0800 software
drwxr-xr-x  8 root root       4096 2019-08-19 01:50:13.000000000 +0800 bak