alias求助

用它设的别名，重启后就恢复原默任值拉，我该杂办，高手指点！！！

cat ~ivn/.bashrc
# .bashrc

# User specific aliases and functions

# Source global definitions
if [ -f /etc/bashrc ]; then
        . /etc/bashrc
fi
//=================================

添加到 ~/.bashrc 文件中去!