4.4 帮助命令

帮助命令：man

man [配置文件名即可]

┌──(xiaoan?Heart)-[~]
└─$ which passwd
/usr/bin/passwd
                                                                                                     ┌──(xiaoan?Heart)-[~]
└─$ whereis passwd
passwd: /usr/bin/passwd /etc/passwd /usr/share/man/man1/passwd.1.gz /usr/share/man/man1/passwd.1ssl.gz /usr/share/man/man5/passwd.5.gz

man 5 passwd
whatis ls       //命令
apropos inittab         //配置文件
touch --help
information

帮助命令：help