RedHat中四個使用者配置檔案使用的先後

在/etc/profile前後分別加上一行：

into /etc/profile

leave /etc/profile

/etc/bashrc、/home/oracle/.bash_profile、/home/oracle/.bashrc也類似處理，則切換使用者時可以看到如下效果從而可以得知，利用四個檔案的先後順序：
[root@law etc]# su - oracle
into /etc/profile
leave /etc/profile
into bash_profile
into /home/oracle/bashrc ========在.bash_profile中呼叫了/home/oracle/bashrc
into /etc/bashrc ==========在/home/oracle/bashrc 中呼叫了/etc/bashrc
leave /etc/bashrc
leave /home/oracle/bashrc
leave bash_profile