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45 lines
1.4 KiB
45 lines
1.4 KiB
7 years ago
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whatis
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===
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6 years ago
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7 years ago
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查询一个命令执行什么功能
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## 补充说明
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**whatis命令** 是用于查询一个命令执行什么功能，并将查询结果打印到终端上。
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whatis命令在用`catman -w`命令创建的数据库中查找command参数指定的命令、系统调用、库函数或特殊文件名。whatis命令显示手册部分的页眉行。然后可以发出man命令以获取附加的信息。whatis命令等同于使用`man -f`命令。
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### 语法
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```
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whatis
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```
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### 实例
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```
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[root@localhost ~]# whatis ls
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ls (1) - list directory contents
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ls (1p) - list directory contents
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[root@localhost ~]# whatis cp
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cp (1) - copy files and directories
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cp (1p) - copy files
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[root@localhost ~]# whatis chown
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chown (1) - change file owner and group
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chown (1p) - change the file ownership
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chown (2) - change ownership of a file
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chown (3p) - change owner and group of a file
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[root@localhost ~]# whatis man
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man (1) - format and display the on-line manual pages
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man (1p) - display system documentation
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man (7) - macros to format man pages
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man (rpm) - A set of documentation tools: man, apropos and whatis.
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man-pages (rpm) - Man (manual) pages from the Linux Documentation Project.
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man.config [man] (5) - configuration data for man
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```
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