ls -l 中的第 4 列是什么意思

Question

column 1 defines type of file and file permissions.** 
column 2 defines - i d k 
column 3 identifies owner of the file
column 4 identifies - a user but not sure of the association
column 5 file size
column 6 month of creation 
column 7 day of creation
column 8 time of creation
column 9 filename

有人能补充一下我遗漏的第 2 列和第 4 列的详细信息吗？请确认我的理解。我已经向文件所有者发出了问题，希望一些澄清可以帮助解决我的问题。

Answer 1

在输出中：

2nd column will tell you about the number of links to the file, 
4th columns is associated group of the file.

Answer 2

第四列是文件/目录/资产所属的组。运行命令groups查看你属于哪些组。