怎样通过联机帮助学会不懂的命令

　　答：
　　HP-UX提供了一个联机命令---"man"，该命令用于帮助用户了解某个HP-UX命令的使用方法 、 命令的作用等等。
　　如下例，显示了HP-UX命令 who 的联机帮助信息：
　　
　　#man who
　　
　　who(1)
　　
　　NAME
　　who - who is on the system
　　
　　SYNOPSIS
　　who [-muTlHqpdbrtasAR] [file]
　　
　　who am i
　　
　　who am I
　　
　　DESCRIPTION
　　The who command can list the user's name, terminal line, login time,elapsed time since input activity oclearcase/" target="_blank" >ccurred on the line, the user's host name, and the process-ID of the command interpreter (shell) for each current system user. It examines the /etc/utmp file to obtain its information. If file is given, that file is examined. Usually,file is /var/adm/wtmp, which contains a history of all of the logins since the file was last created.
　　The who command with the am i or am I option identifies the invoking user.
　　cat12619 (9%) <-- 表示仅列出了所有信息的9％。继续显示后续信息，可以按空格键，或J键；也可以按K键查看前面的信息。
　　
　　
　　
　　
　　
　　
　　

原文转自：http://www.ltesting.net