bash 参数中的主目录扩展 (~)
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home directory expansion (~) within an argument
提问by Yoo
When I enter the following (BASH):
当我输入以下内容（BASH）时：
rdesktop -r disk:bacon=~/bacon host
It does not expand to
它不会扩展到
rdesktop -r disk:bacon=/home/me/bacon host
It seems the "disk:" part is the problem as can be seen in:
似乎“磁盘：”部分是问题所在，如下所示：
$ echo bacon=~/bacon disk:bacon=~/bacon
bacon=/home/me/bacon disk:bacon=~/bacon
How can I make tilde expand?
我怎样才能让波浪号展开？
回答by P Shved
While ~ does not expand (it's used as specially routed of the path), $HOMEdoes.
虽然 ~ 不会扩展（它用作路径的特殊路由），$HOME但会扩展。
rdesktop -r disk:bacon=$HOME/bacon host
But be careful with environment-changing su!
但要小心环境变化su！
回答by pilcrow
rdesktop -r disk:bacon=$(echo ~/bacon) host
rdesktop -r disk:bacon=$(echo ~/bacon) host
will do it. It won't please the eye, but it will work.
会做的。它不会让眼睛高兴，但它会起作用。
