什么是用bash中的符号链接替换文件的DRYest方法

Question

I have an existing file which I'm replacing with a symlink to another file. So I basically need to do this:

rm orig
ln -s /var/better orig

I DRYed the above to this:

{rm,ln\ -s\ /var/better}\ orig\;

But it no longer works. The shell now complains:

-bash: rm orig;: command not found

Is there a way to make the DRY form work?

Answer 1

You can just use "-f".

ln -sf /var/better orig

From man ln

-f, --force remove existing destination files

Answer 2

你需要的只是cp：

cp -sf /var/better orig