Insert space after period using sed

Question

I\'ve got a bunch of files that have sentences ending like this: \\@.Next sentence. I\'d like to insert a space after the period.

Not all occurrences of

Answer 1

The right command should be this:

sed -i.bak -E "s/\\\@.(\S)/\\\@. \1/g" *.tex

Whith it, you match any \@ followed by non whitespace (\S) and insert a whitespace (what is made by replacing the whole match with '\@ ' plus the the non whitespace just found).