At the moment, unfortunately Foldit doesn't offer any possibility to export scripts, under operating systems other than Windows.
In Windows, you can export a script by merely editing the script. Click into the window. Press Ctrl+C. Then click into another program such as Notepad++ and paste.
This also works in the other direction. Click into the window and press Ctrl+V to paste over the existing content.
Editing in other operating systems
The following text is for exporting and importing Lua scripts (it could also work on GUI scripts) using Notepad++.
This method can work on other OS, but there will be another place where the files are stored.
NOTEPAD++ is an open-source and very comfortable Text-Editor with many functions, provided by SourceForge.
You can download it here:
http://sourceforge.net/projects/notepad-plus/files/
Before you start, I recommend that you have a look at Lua Export and Import of Scripts using Text and HEX editor,
because the first steps are the same (from 3. of "Things you need" through "Trimming the file") .
How to do it:
Download and Install NOTEPAD++
Do the same steps as described in 3. "Things you need" through "Trimming the file".
Start NOTEPAD++
Open all.macro with the File tab (Ctrl-o)
The Option "Show all symbols" (Pilcrow-Symbol, the reversed Double-P) will help, we activate it.
Click replace in the Search tab (Ctrl-h)
uncheck "in selection", so it's guaranteed, that everything is replaced.
uncheck "match whole word only"
uncheck "match case" (if checked)
Click search mode: extended
Use "replace" (in the edit tab of your text editor).
Replace all \\n with \n (to turn linefeed as text to a real linefeed)
Replace all \r with nothing (to remove carriage-return information, as it is not neeeded)
This will result the linefeed as in the game's editor.
Now Click search mode: normal
Replace all \\\" with "
Replace all \\\, with ,
Replace all \\\# with #
In general, replace every \\\x with x
If you are sure, that you haven't used any \ in the script you can replace all \ by nothing.
Your script is now ready to be edited, and inserted into FoldIt again.
If you need help for export, paste your all.macro content here: