Editing a .sav file and re-naming it back. (simple)

I have a xxx.sav file I would like to edit. If i rename the file like xxx.txt.gz I can unzip it and get to the content which I would like to edit. I have done all of that. However I cannot manage to get it back into .SAV format. Is there a way which I can do this after changing a line of code in the .txt?

Solution

Remember gzipping your file back and forth, to avoid issues. Your workflow should look something like this:

rename to txt.gz -> 
unzip to .txt -> 
edit -> 
gzip to .txt.gz

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