There are good means to manipulate your files in bash. We will give you the main commands
It's $HOME/.PlayOnLinux/tmp/
You can stock and modify the files you want inside of it.
it's recommanded to remove the files from this folder after their use
You just need to use the cd command.
Note: The new directory is stocked in the $PWD variable
Example:
cd $HOME/.PlayOnLinux/tmp/
./ corresponds to the current directory
../ corresponds to the parent directory
Beware, this command is very dangerous. I could destroy all your files if you don't manipulate it well. For example, if you decide to erase /home/tinou/.PlayOnLinux/tmp/ but you put a space between /tinou/ and .PlayOnLinux inadvertently, say goodbye to your documents. PlayOnLinux won't be responsible of a bad manipulation from yourself.
This being said, here are the codes
rm ./file.extension
Will remove file.extension in the current directory ($PWD)
rm ./folder -r
Removes the folder and its contents.
cp source_file target_directory
cp source_directory target_directory/ -r
mv source_directory target_directory
mv source_file target_file
I give the code without explainning it. To understand it, see the annexes
cd $HOME/.PlayOnLinux/configurations/installed
variable=$(menu "Your choice:" "$(ls -1)" "" 0 0 0 "" "--cut-line")