例如：ls命令只有第 1 章。而建立目录命令有第 1 章和第 2 章。是否有任何命令可以显示特定命令有多少个可用章节？
[root@localhost /]# man 1 ls
[root@localhost /]# man 2 ls
No entry for ls in section 2 of the manual
[root@localhost /]# man 3 ls
No entry for ls in section 3 of the manual
[root@localhost /]# man 4 ls
No entry for ls in section 4 of the manual
[root@localhost /]# man 5 ls
No entry for ls in section 5 of the manual
[root@localhost /]# man 6 ls
No entry for ls in section 6 of the manual
[root@localhost /]# man 7 ls
No entry for ls in section 7 of the manual
[root@localhost /]# man 8 ls
No entry for ls in section 8 of the manual
[root@localhost /]# man 1 mkdir
[root@localhost /]# man 2 mkdir
[root@localhost /]# man 3 mkdir
No entry for mkdir in section 3 of the manual
[root@localhost /]# man 4 mkdir
No entry for mkdir in section 4 of the manual
[root@localhost /]# man 5 mkdir
No entry for mkdir in section 5 of the manual
[root@localhost /]# man 6 mkdir
No entry for mkdir in section 6 of the manual
[root@localhost /]# man 7 mkdir
No entry for mkdir in section 7 of the manual
[root@localhost /]# man 8 mkdir
No entry for mkdir in section 8 of the manual
答案1
你使用apropos -e ls- 这是精确匹配，并过滤掉很多僵硬的顺便提一下命令将在手册页标题中搜索字符串。我认为相关条目旁边的数字是章节数 - 例如，当我运行apropos -e mkdir
mkdir (1) - make directories
mkdir (2) - create a directory
apropos -e ls虽然节目的输出
dircolors (1) - color setup for ls
ls (1) - list directory contents
我承认我无法弄清楚命令名称旁边括号中的数字是否是章节编号，但这将是要使用的命令。