在红帽企业LINUX中获取帮助
在红帽企业LINUX中获取帮助
whatis
man
--help
Pinfo
sosreport
/usr/share/doc
使用man命令读取文档
[[email protected] xx]# man man
1 Executable programs or shell commands 用户命令（可执行命令和shell程序）
2 System calls (functions provided by the kernel) 系统调用（从用户空间调用的内核例程）
3 Librarycalls (functions within program libraries) 库函数（由程序提供）
4 Special files (usually found in /dev) 特殊文件（如设备文件）
5 File formats and conventions eg /etc/passwd 文件格式（用户许多配置文件和结构）
6 Games 游戏
7 Miscellaneous (including macro packages and conventions), e.g.man(7), groff(7)
惯例、标准和其他（协议，文件系统）
8 System administration commands (usually only for root)系统管理和特权命令（维护任务）
9 Kernel routines [Non standard]Linux 内核API (内核调用)
空格键 向前（向下）滚动一个屏幕
PageDown 向前（向下）滚动一个屏幕
PageUp 向后（向上）滚动一个屏幕
向下箭头键 向前（向下）滚动一行
向上箭头键 向后（向上）滚动一行
d 向前（向下）滚动半个屏幕
u 向后（向上）滚动半个屏幕
/string 在man page中向前搜索string
n 向下搜索
N 向上搜索
g 转到man page的开头
G 转到man page的结尾
q 退出man
关键字搜索
Man –k
[[email protected] ~]$ man -k passwd
chpasswd (8) - 批量更新密码
gpasswd (1) - 管理员 /etc/group 和 /etc/gshadow
fgetpwent_r (3) - get passwd file entry reentrantly
getpwent_r (3) - get passwd file entry reentrantly
grub2-mkpasswd-pbkdf2 (1) - Generate aPBKDF2 password hash.
lpasswd (1) - Change group or user password
lppasswd (1) - add, change, or delete digestpasswords.
pam_localuser (8) - require users to be listed in /etc/passwd
passwd (1) - update user‘s authenticationtokens
sslpasswd (1ssl) - compute password hashes
passwd (5) - password file
passwd2des (3) - RFS password encryption
pwhistory_helper (8) - Helper binary thattransfers password hashes from pass...
saslpasswd2 (8) - set a user‘s sasl password
smbpasswd (5) - The Samba encrypted password file
userpasswd (1) - A graphical tool to allow users tochange their passwo...
vncpasswd (1) - change the VNC password
为passwd manpage 创建格式化输出文件
[[email protected] xx]# rm -rf passwd.ps
[[email protected] xx]# man -t passwd>passwd.ps
[[email protected] xx]# ls
passwd.ps
[[email protected] xx]# file passwd.ps
passwd.ps: PostScript document textconforming DSC level 3.0
[[email protected] doc]$ firefox file:///usr/share/doc