我想要一个 URL 编码器。所以我apropos
在终端中编辑了它,并收到以下内容
$ apropos url
uri (7) - uniform resource identifier (URI), including a URL or URN
URI::URL (3pm) - Uniform Resource Locators
url (7) - uniform resource identifier (URI), including a URL or URN
urn (7) - uniform resource identifier (URI), including a URL or URN
但是当我输入时,url
它输出:
$ url
No command 'url' found, did you mean:
Command 'rl' from package 'randomize-lines' (universe)
Command 'ul' from package 'bsdmainutils' (main)
Command 'erl' from package 'erlang-base' (main)
Command 'erl' from package 'erlang-base-hipe' (universe)
Command 'uil' from package 'libmotif-dev' (multiverse)
Command 'uil' from package 'lesstif-bin' (universe)
Command 'curl' from package 'curl' (main)
url: command not found
答案1
当apropos url
返回类似内容url(1)
时,您可以将其用作url
命令行。在此之前,url(7)
将参考宏包或约定(杂项)。
数字对应于该页面来自手册的哪一节;1 表示用户命令,而 8 表示系统管理员内容。man 本身的手册页 (man man) 对此进行了解释并列出了标准内容:
MANUAL SECTIONS The standard sections of the manual include: 1 User Commands 2 System Calls 3 C Library Functions 4 Devices and Special Files 5 File Formats and Conventions 6 Games et. Al. 7 Miscellanea 8 System Administration tools and Deamons Distributions customize the manual section to their specifics, which often include additional sections.
来源:https://unix.stackexchange.com/questions/3586/what-do-the-numbers-in-a-man-page-mean。