linuxman命令的基本使用技巧

type 判断内部外部命令

内置命令bash自带的：help

外部命令有路径的

usr/share/man/man

man配置的使用技巧

先看man的章节

命令手册章节 1，用户命令 2，系统调用，system call 3，库调用，library call 4，设备文件 5，配置文件 6，游戏 7，杂项 8，管理命令

使用whatis匹配关键字，根据关键字选择，章节，

man精确匹配命令 whatis+命令：显示指定关键字存在帮助手册的章节相关信息和简单说明 [root@localhost ~]# whatis passwd passwd (1) - update user's authentication tokens passwd (5) - password file passwd [sslpasswd] (1ssl) - compute password hashes [root@localhost ~]# 模糊匹配 模糊匹配方式显示指定的关键字的描述信息中存在帮助手册相关信息 [root@localhost ~]# man -k passwd chpasswd (8) - update passwords in batch mode fgetpwent_r [getpwent_r] (3) - get passwd file entry reentrantly getpwent_r (3) - get passwd file entry reentrantly gpasswd (1) - administer /etc/group and /etc/gshadow htpasswd (1) - Manage user files for basic authentication lpasswd (1) - Change group or user password lppasswd (1) - add, change, or delete digest passwords pam_localuser (8) - require users to be listed in /etc/passwd pam_passwdqc (8) - Password quality-control PAM module passwd (1) - update user's authentication tokens passwd2des [xcrypt] (3) - RFS password encryption passwd (5) - password file passwd [sslpasswd] (1ssl) - compute password hashes saslpasswd2 (8) - set a user's sasl password smbpasswd (5) - The Samba encrypted password file smbpasswd (8) - change a users SMB password userpasswd (1) - A graphical tool to allow users to change their passwords [root@localhost ~]#

man命令借助less命令查看文件内容法则 还有几个命令： info：获取在线文档 changelog：更新日志 install:安装说明 README：程序说明信息 www.redhat.com/docs 官方文档