为linux命令起别名

使别名永久生效（#定制专属命令~#）

• 编辑~/.bashrc文件

vim ~/.bashrc

例子：

# .bashrc

# User specific aliases and functions

alias rm='rm -i'
alias cp='cp -i'
alias mv='mv -i'
alias cls='clear'
alias hdfs='hadoop fs'

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

• 使~/.bashrc生效

source ~/.bashrc

• Done