Originally Posted by Raze

In Linux the saves are store in the Home directory, '..\Larian Studios\Divinity Original Sin Enhanced Edition\PlayerProfiles\<ProfileName>\Savegames_patch' folder.

To avoid confusion on the side of any novice Linux users here, I humbly suggest ~/Larian Studios/Divinity Original Sin Enhanced Edition/PlayerProfiles/<ProfileName>/Savegames_patch, because Linux uses slashes as directory dividers, and ".." would lead to the upper directory /home where the rest of the path wouldn't be valid.

For any novice Linux users who happen to read this: "~" stands for the current user's home directory. Instead, you could also write /home/<username> or $HOME (e.g. $HOME/Larian Studios/ and so on). In most situations and tools, all of these should work equally good.