如何创建bash脚本以使用一个别名执行/撤消设置区域设置？

Question

How to create bash script (to make alias of it), doing this:

if LANG=en_US.UTF-8
then "unset LANG"
else "export LANG=en_US.UTF-8"

Answer 1

adding

en() {
if [[ $LANG == "en_US.UTF-8" ]]
then unset LANG
else export LANG=en_US.UTF-8
fi
}

to ~/.bash_profile works!