#!/usr/bin/env sh

string='alpha = a
beta = b
Exec = foo bar baz
end = EOF'
pattern='^Exec = foo .*$'
repl='Exec = /bin/foo BAR BAZ'

string="$(printf '%s' "${string}" | ../src/py_regex_replace/main.py -p "${pattern}" -r "${repl}" -c 1)"

printf 'RESULT>>>\n%s\n<<<RESULT\n' "${string}"
# RESULT>>>
# alpha = a
# beta = b
# Exec = /bin/foo BAR BAZ
# end = EOF
# <<<RESULT