Question

I am trying to generate documentation of the Octave API using doxygen. However, doxygen recognizes only comments after /// to be documentation and the comment style in Octave is to use only //. I decided to run a shell command to change this and found this

sed -i 's/old-word/new-word/g' *.txt

from here. When I test the command using

sed -i 's/////// /g' *.txt

or

sed -i 's/"//"/"/// "/g' *.txt

I get the error:

sed: -e expression #1, char 5: unknown option to `s'

or

sed: -e expression #1, char 6: unknown option to `s'

respectively. How do I correctly use sed to replace // with ///?

Alternatively, is a simpler way, such as, for example, opening all the files simuntaniously in some IDE and refactoring.

Answer 1

Try:

sed -i 's+//+///+g' *.txt

It is unlucky to use / as a delimiter if you need to substitute /// for // xD.