How to get absolute path of a directory?

Question

I want to automate the following thing:

cd into current directory

cd workdir

make a new directory

mkdir mydata

and get the absolute path to this mydata directory

Answer 1

有一个Unix实用程序可以实现：

readlink --canonicalize nameofyourfileorfolder

Answer 2

Assuming cd workdir; mkdir mydata does not fail:

dir=$(cd workdir; mkdir mydata; pwd)

Slightly more robust:

dir=$(mkdir -p workdir/mydata; pwd)

For a still more robust approach, you could run the following command after checking the created directory exists:

dir=$(cd workdir/mydata; pwd)

If by "absolute path" you mean the physical path, then consider using pwd -P instead of just pwd .