远程登录虚拟机，linux shell提示符为-bash-4.1$ 要把这个提示符改掉 1、新建~/.bash_profile文件 -bash-4.1$ vi ~/.bash_profile -bash-4.1$ cat ~/.bash_profile cat: /home/hadoop/.bash_profile: No such file or directory 提示 权限不够，不能保存
查看用户 -bash-4.1$ whoami hadoop
-bash-4.1$ pwd /home/hadoop
修改权限 -bash-4.1$ sudo chmod 777 /home/hadoop
We trust you have received the usual lecture from the local System Administrator. It usually boils down to these three things:
#1) Respect the privacy of others. #2) Think before you type. #3) With great power comes great responsibility.
[sudo] password for hadoop: hadoop is not in the sudoers file. This incident will be reported.
2、使用root用户，对/home/hadoop开放访问权限，ok -bash-4.1$ su Password: [root@spark0 hadoop]# sudo chmod 777 /home/hadoop [root@spark0 hadoop]# exit
3、修改~/.bash_profile文件
-bash-4.1$ vim ~/.bash_profile 加上 export PS1='[\u@\h \W]\$'
4、文件生效 -bash-4.1$ source ~/.bash_profile 5、现在的提示符是这样的，ok
-bash-4.1$ source ~/.bash_profile [hadoop@spark0 ~]$pwd /home/hadoop [hadoop@spark0 ~]$cd /home/hadoop [hadoop@spark0 ~]$ls
