find and replace with sed

find_replace_sed.sh

find . -name *.py -type f -print0 -exec sed -i '' 's/pattern/new_pattern/g' {} +
# the above code seems to be bugged, instead:

for p in ` find . -name "*.html" -type f`;do sed -i '' 's/slug/tobase64/g' $p;done

# if you're not on OS X there is no need to pass -i '' to sed, just run:

find . -name *.py -type f -print0 -exec sed -i 's/pattern/new_pattern/g' {} +

# this avoids the "invalid command code ." error (on OS X)