ls -l 变更前
代码语言：javascript
复制[root@VM-centos ~]# ls -l
total 168
drwxr-xr-x 2 root root 4096 May 6 16:51 code_bak
-rwxr-xr-x 1 root root 129424 Jan 27 2016 dig
drwxr-xr-x 2 root root 4096 Apr 27 2021 docker
drwxr-xr-x 9 root root 4096 May 6 16:20 download
drwxr-xr-x 4 root root 4096 Dec 23 11:50 go
drwxr-xr-x 6 root root 4096 Jul 7 2021 lib
drwxrwxr-x 20 root root 4096 Jul 7 2021 libiconv-1.16
drwxr-xr-x 2 root root 4096 Jul 7 2021 services
alias 配置进入终端，自动生效
代码语言：javascript
复制[root@VM-centos ~]# echo "alias ll='ls -rtlh --time-style " %Y-%m-%d %H:%M:%S"'">>~/.bashrc
[root@VM-centos ~]# . ~/.bashrc
ll 看效果，易读了许多
代码语言：javascript
复制[root@VM-centos ~]# ll
total 168K
-rwxr-xr-x 1 root root 127K 2016-01-27 20:55:56 dig
drwxr-xr-x 2 root root 4.0K 2021-04-27 16:39:29 docker
drwxrwxr-x 20 root root 4.0K 2021-07-07 19:56:51 libiconv-1.16
drwxr-xr-x 6 root root 4.0K 2021-07-07 19:57:30 lib
drwxr-xr-x 2 root root 4.0K 2021-07-07 20:22:04 services
drwxr-xr-x 4 root root 4.0K 2021-12-23 11:50:11 go
drwxr-xr-x 9 root root 4.0K 2022-05-06 16:20:45 download
drwxr-xr-x 2 root root 4.0K 2022-05-06 16:51:53 code_bak
ls --help 参数解释
代码语言：javascript
复制-r, --reverse reverse order while sorting
-t sort by modification time, newest first
-l use a long listing format
-h, --human-readable with -l, print sizes in human readable format
(e.g., 1K 234M 2G)
--time-style=STYLE with -l, show times using style STYLE:
full-iso, long-iso, iso, locale, or FORMAT;
FORMAT is interpreted like in 'date'; if FORMAT
is FORMAT1<newline>FORMAT2, then FORMAT1 applies
to non-recent files and FORMAT2 to recent files;
if STYLE is prefixed with 'posix-', STYLE
takes effect only outside the POSIX locale
