I'm writing my cross-platform (say OSX and Ubuntu) automation deployment script. Aria2 is one component of it.
Here I face the embarrassed situation: the $HOME couldn't be used in the aria2's conf file while can be used in the terminal command line argument.
Say, run the command below in the terminal

aria2c --conf-path=$HOME/.aria2/aria2-chrome.conf

will give me this error:

Exception caught
Exception: [download_helper.cc:528] errorCode=1 Failed to open the file ${HOME}/.aria2/aria2-chrome.session, cause: No such file

or $HOME will fail either.

The thing is the file do exist, if I replace $HOME with absolute path in the conf file, all things will be ok.

As you may noticed that $HOME under OSX is something like /Users/username while under Ubuntu is something like /home/username. Surely, I can prepare for two version of conf file for this two OS.

Is there any other elegant solution?