Bash script to create ram disk to be used to speed up IntelliJ

phpstormRamDiskCreate.bash

#!/bin/bash

ramDiskCreate ()
{
    if [ ! -d /Volumes/RAMDisk/intellij-cache/ ]; then
        diskutil erasevolume HFS+ 'RAMDisk' `hdiutil attach -nomount ram://1024288`;
    else
        echo RAMDisk already created;
    fi;
    mkdir -p /Volumes/RAMDisk/intellij-caches;
}

And symlink with
mv ~/Library/Caches/PhpStorm2018.2/index/* /Volumes/RAMDisk/phpstorm-index/
rm -rf ~/Library/Caches/PhpStorm2018.2/index
ln -s /Volumes/RAMDisk/phpstorm-index/ ~/Library/Caches/PhpStorm2018.2/index

mv ~/Library/Caches/PhpStorm2018.2/caches/* /Volumes/RAMDisk/phpstorm-caches/
rm -rf ~/Library/Caches/PhpStorm2018.2/caches
ln -s /Volumes/RAMDisk/phpstorm-caches/ ~/Library/Caches/PhpStorm2018.2/caches

ls -la ~/Library/Caches/PhpStorm2018.2