问题
Below is my code for creating a symlink of a directory:
sudo ln -s /usr/local/nginx/conf/ /etc/nginx
I already created the directory /etc/nginx. I just want the contents of the source directory (/usr/local/nginx/conf/) to be in the contents of the target directory (/etc/nginx). But when I execute the code, /etc/nginx contains a directory called conf, instead of the contents of conf. That directory contains the contents I want, but in the wrong location.
Why did it put a directory in the target folder, instead of just putting the contents of the directory in the target folder?
回答1:
This is the behavior of ln if the second arg is a directory. It places a link to the first arg inside it. If you want /etc/nginx to be the symlink, you should remove that directory first and run that same command.
回答2:
That's what ln is documented to do when the target already exists and is a directory. If you want /etc/nginx to be a symlink rather than contain a symlink, you had better not create it as a directory first!
回答3:
In script is usefull something like this:
if [ ! -d /etc/nginx ]; then ln -s /usr/local/nginx/conf/ /etc/nginx > /dev/null 2>&1; fi
it prevents before re-create "bad" looped symlink after re-run script
来源：https://stackoverflow.com/questions/9104337/create-a-symbolic-link-of-directory-in-ubuntu